Datasheet FV75, FV200, FV166, FV150, FV133 Datasheet (Intel Corporation)

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June 1997 Order Number 241997-010

Max. Operating Frequency

MHz

100

MHz

120

MHz

133

MHz

150

MHz

166

MHz

200

MHz

iCOMP® Index 2.0 Rating 67 81 90 100 111 114 127 142

Note: Contact Intel Corporation for more information about iCOMP®Index 2.0 ratings.

Compatible with Large Software Base

 MS-DOS*, Windows*, OS/2*, UNIX*

32-Bit CPU with 64-Bit Data Bus

Superscalar Architecture

 Two Pipelined Integer Units Are Capable

of 2 Instructions/Clock

 Pipe-lined Floating Point Unit

Separate Code and Data Caches

 8-Kbyte Code, 8-Kbyte Write Back Data  MESI Cache Protocol

Advanced Design Features

 Branch Prediction  Virtual Mode Extensions

3.3V BiCMOS Silicon Technology

4-Mbyte Pages for Increased TLB Hit Rate

IEEE 1149.1 Boundary Scan

Dual Processing Configuration

Functional Redundancy Checking Support

Internal Error Detection Features

Multi-Processor Support

 Multiprocessor Instructions  Support for Second Level Cache

On-Chip Local APIC Controller

 MP Interrupt Management  8259 Compatible

Upgradable with a Pentium® OverDrive

Processor

Power Management Features

 System Management Mode  Clock Control

Fractional Bus Operation

 200-MHz Core/66-MHz Bus  166-MHz Core/66-MHz Bus  150-MHz Core/60-MHz Bus  133-MHz Core/66-MHz Bus  120-MHz Core/60-MHz Bus  100-MHz Core/66-MHz Bus  100-MHz Core/50-MHz Bus  90-MHz Core/60-MHz Bus  75-MHz Core/50-MHz Bus

The Pentium

processor 75/90/100/120/133/150/166/200 extends the Pentium processor family, providing performance needed for mains tream des k top applic ations as w ell as for works tations and s erv ers . The Pentium process or is compatible with the entire installed base of applications for DOS*, W indows*, OS/2* , and UNIX*. The Pentium process or 75/90/100/120/133/150/166/200 superscalar architecture can execute two instructions per clock c y c le. B ranc h predic tion and s epar ate c ac hes als o inc reas e per formanc e. The pipelined floating point unit delivers workstation level performance. Separate code and data caches reduce cache conflicts while remaining software transparent. The Pentium processor 75/90/100/120/133/150/166/200 has 3.3 million transistors and is built on Intel’s advanced 3.3V BiCMOS silicon technology. The Pentium processor 75/90/100/120/133/150/166/200 has on-chip dual process ing support, a loc al multiproces sor interr upt controller, and SL power management features. The Pentium process or may contain design defec ts or errors know n as errata which may cause the produc t to deviate from published s pecifications. Current c haracterized errata are available upon request.

PENTIUM® PROCESSOR

Page 2

CONTENTS

PAGE PAGE

1.0. MICROPROCESSOR ARCHITECTURE

OVERVIEW .......................................................3

1.1. Pentium® Processor Family Architecture......3

1.2. Pentium® Processor

75/90/100/120/133/150/166/200....................6

2.0. PINOUT..............................................................8

2.1. Pinout and Pin Descriptions...........................8

2.2. Design Notes................................................12

2.3. Quick Pin Reference....................................12

2.4. Pin Reference Tables...................................22

2.5. Pin Grouping According to Function............26

3.0. ELECTRICAL SPECIFICATIONS ..................27

3.1. Electrical Differences Between Pentium® Processor 75/90/100/120/133/150/166/200

and Pentium Processor 60/66......................27

3.2. Absolute Maximum Ratings..........................28

3.3. DC Specifications.........................................28

3.4. AC Specifications.........................................31

4.0. MECHANICAL SPECIFICATIONS.................56

5.0. THERMAL SPECIFICATIONS........................62

5.1. Measuring Thermal Values..........................62

6.0. OverDrive® PROCESSOR SOCKET

SPECIFICATION.............................................69

6.1. Introduction...................................................69

6.2. Socket 5.......................................................69

6.3. Socket 7.......................................................70

Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel’s Terms and Conditions of Sale for such products , Intel assumes no liability w hats oeve r, and Intel disc laims any expres s or implied warranty , relating to sale and/or use of Intel products including liability or warr anties re lating to fitnes s fo r a par tic ular pur pose, me rchantabilit y, or infringement of any patent, copyright or other intellectual property right. Intel produc ts are not intended for us e in medical, life saving, or life sustaining applications.

Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not r ely on the absence or c haracteristics of any features or instruc tions marked "reser ved" or "undefined."

Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.

The Pentium

processor may contain design defects or errors know n as errata whic h may caus e the product to deviate from

published specifications. Current characterized errata are available on request. Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order. Copies of documents which hav e an ordering number and are refer enced in this document, or other Intel literatur e, may be

obtained from:

Intel Corporation P.O. Box 7641 Mt. Prospect IL 60056-7641

or call 1-800-879-4683

* Third-party brands and names are the property of their respective owners.

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PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

1.0. MICROPROCESSOR

ARCHITECTURE OVERVIEW

The Pentium® processor 75/90/100/120/133/ 150/166/200 extends the Intel Pentium family of microprocessors. It is binary compatible with the 8086/88, 80286, Intel386™ DX CPU, Intel386 SX CPU, Intel486™ DX CPU, Intel486 SX CPU, Intel486 DX2 CPU, and Pentium processor 60/66.

The Pentium processor family consists of the following products.

• Described in this document (product code

80502). The name “Pentium processor

75/90/100/120/133/150/166/200” will be us ed to

refer to these products:

– Pentium processor at 200 MHz, iCOMP

Index 2.0 rating = 142

– Pentium processor at 166 MHz, iCOMP

Index 2.0 rating = 127

– Pentium processor at 150 MHz, iCOMP

Index 2.0 rating = 114

– Pentium processor at 133 MHz, iCOMP

Index 2.0 rating = 111

– Pentium processor at 120 MHz, iCOMP

Index 2.0 rating = 100

– Pentium processor at 100 MHz, iCOMP

Index 2.0 rating = 90

– Pentium processor at 90 MHz, iCOMP

Index 2.0 rating = 81

– Pentium processor at 75 MHz, iCOMP

Index 2.0 rating = 67

• Original Pentium processor. The name

“Pentium process or 60/66” will be used to refer

to the original 60 and 66 MHz version products:

– Pentium processor at 66 MHz, iCOMP

Index 2.0 rating = 57

– Pentium processor at 60 MHz, iCOMP

Index 2.0 rating = 51

The Pentium proces sor f amily arc hitectur e c ontains all of the features of the Intel486 CPU family, and provides significant enhancements and additions including the following:

• Superscalar Architecture

• Dynamic Branch Prediction

• Pipelined Floating-Point Unit

• Improved Instruction Execution Time

• Separate 8K Code and 8K Data Caches

• Writeback MESI Protocol in the Data Cache

• 64-Bit Data Bus

• Bus Cycle Pipelining

• Address Parity

• Internal Parity Checking

• Functional Redundancy Checking

• Execution Tracing

• Performance Monitoring

• IEEE 1149.1 Boundary Scan

• System Management Mode

• Virtual Mode Extensions

In addition to the features listed abov e, the Pentium processor 75/90/100/120/133/150/166/200 offers the following enhancements over Pentium processor 60/66:

• Fractional bus operation allowing higher core frequency operation

• Dual processing support

• SL power management features

• On-chip local APIC device

1.1. Pentium® Processor Family

Architecture

The application instruction set of the Pentium processor family includes the complete Intel486 CPU family instruction set with extensions to accommodate s ome of t he additional func tionalit y of the Pentium processors. All application software written for the Intel386 and Intel486 family microproc es s ors will run on the Pentium proc es s ors without modification. The on-chip memory management unit (MMU) is completely compatible with the Intel386 family and Intel486 family of CPUs.

The Pentium processors implement several enhancements to increase performance. The two instruction pipelines and floating-point unit on Pentium processors are capable of independent operation. Each pipeline issues frequently used

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

instructions in a single clock. Together, the dual pipes can issue two integer instructions in one clock , or one floating point ins t ruc tion ( under c er tain circumstances, two floating-point instructions) in one clock.

Branch prediction is implemented in the Pentium processors. To support this, Pentium processors implement two prefetch buffers, one to prefetch code in a linear fashion, and one that prefetches code according to the BTB so the needed code is almost always prefetched before it is needed for execution.

The floating-point unit has been completely redesigned over the Intel486 CPU. Faster algorithms prov ide up to 10X speed- up for common operations including add, multiply, and load.

Pentium processors include separate code and data caches integrated on-chip to meet performance goals. Each cache is 8 Kbytes in size, with a 32byte line size and is 2-way set associative. Each cache has a dedicated Translation Lookaside Buffer (TLB) to translate linear addresses to physical addresses. The data cache is configurable to be write back or write through on a line-by-line basis and follows the MES I prot oc ol. The data cache t ags are triple ported to support two data trans fers and an inquire cycle in the same clock. The code cache is an inherently write-protected cache. The code cache tags are also triple ported to support snooping and split line ac cesses. Individual pages can be configured as cacheable or non-cacheable by software or hardware. The caches can be enabled or disabled by software or hardware.

The Pentium processors have increased the data bus to 64 bits to improve the data transfer rate. Burst read and burst write back cycles are supported by the Pentium processors. In addition, bus cycle pipelining has been added to allow two bus cycles to be in progress simultaneously. The Pentium processors' Memory Management Unit

contains optional extensions to the architecture which allow 2-Mbyte and 4-Mbyte page sizes.

The Pentium processors have added significant data integrity and error detection capability. Data parity chec king is still s upported on a byte-by -byte basis. Address parity checking, and internal parity checking features have been added along with a new exception, the machine check exception.

In addition, the Pentium processors have implemented functional redundancy checking to provide maximum error detection of the processor and the interface to the proc ess or. When func tional redundancy chec king is us ed, a second proc essor, the “checker” is us ed to execute in loc k step w ith the “master” processor. The checker samples the master's outputs and compares those values with the values it computes internally, and asserts an error signal if a mismatch occurs.

As more and more functions ar e integrated on c hip, the complexity of board level testing is increased. To address this, the Pentium processors have increased test and debug capability. The Pentium processors implement IEEE Boundary Scan (Standard 1149.1). In addition, the Pentium processors have specified 4 breakpoint pins that correspond to each of the debug registers and externally indicate a breakpoint match. Execution tracing provides external indications when an instruc tion has completed ex ecution in either of the two internal pipelines, or when a branch has been taken.

System Management Mode (SMM) has been implemented along with some extensions to the SMM architecture. Enhancements to the virtual 8086 mode have been made to increase performance by reduc ing the number of times it is necessary to trap to a virtual 8086 monitor.

Figure 1 shows a block diagram of the Pentium processor 75/90/100/120/133/150/166/200.

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PENTIUM® PROCESSO R 75/ 90/ 100/ 120/ 133/ 150/ 166/ 200

Branch

Target Buffer

Code Cache

8 KBytes

ROM

Control Unit

Generate

Address

Generate

Data Cache

8 KBytes

256

TLB

Prefetch

Address

Prefetch Buffers

Instruction Decode

Instruction

Pointer

Integer Register File

ALU

Barrel Shifter

32 32

Page

Unit

Bus Unit

64-Bit

Data

Bus

32-Bit

Address

Bus

Control

64-Bit

Data

Bus

32-Bit Addr. Bus

Control

Add

Multiply

Divide

Floating

Point

Unit

Pentium® Processor (75/90/100/120/133/150/166/200 MHz)

Control

Address

(U Pipeline) (V Pipeline)

(U Pipeline)

(V Pipeline)

ALU

Branch Verification and Target Address

DP Logic

Control

APIC

Data

Control

199718

Figure 1. Pentium® Processor Block Diagram

The block diagram shows the two instruction pipelines, the "u” pipe and the "v” pipe. The u-pipe can execute all integer and floating point instructions. The v-pipe can execute simple integer instructions and the FXCH floating-point instructions.

The separate code and data caches are shown. The data cache has two port s, one for eac h of the two pipes (the tags are triple ported to allow simultaneous inquir e cycles). The data cache has a dedicated Trans lation Lookaside Buff er (TLB) t o

translate linear addresses to the physical addresses used by the data cache.

The code cache, br anch target buf fer and prefetc h buffers are responsible for getting raw instr uctions into the execut ion units of the Pentium proc essor. Instructions are fetched from the code cache or from the external bus. Branch addresses are remembered by the branc h t arget buf fer. The c ode cache TLB trans lates linear addres ses to phy sical addresses used by the code cache.

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

The decode unit decodes the prefetched instructions so the Pentium processors can execute the ins truc tion. The cont rol ROM cont ains the microcode which controls the sequence of operations that must be performed to implement the Pentium processor architecture. The control ROM unit has direct control over both pipelines.

The Pentium processors contain a pipelined floating-point unit that provides a significant floating-point performance advantage over previous generations of processors.

The architectural features introduced in this chapter are more fully described in the

Pentium

Processor Family Developer’s Manual, Volume 1

(Order Number 241428).

1.2. Pentium® Processor 75/90/100/120/133/150/166/200

In addition to the architec ture desc ribed above for the Pentium processor family, the Pentium processor 75/90/100/120/133/150/166/200 has additional features which are described in this section.

The Pentium processor 75/90/100/120/133/ 150/166/200 offers higher perfor mance and higher operating frequencies than the Pentium process or 60/66.

Symmetric dual processing in a system is supported with two Pentium processor 75/90/100/120/133/150/166/200. The two processors appear to the system as a single Pentium processor 75/90/100/120/133/150 /166/200. Operating systems with dual processing support properly schedule computing tasks between the two processors. This scheduling of tasks is transparent to software applications and the end-user. Logic built into the processors support a “glueless” interface for easy system design. Through a private bus, the two Pentium processor 75/90/100/120/133/150/166/200 arbitrate for the external bus and maintain cache coherency. Dual processing is supported in a system only if both processors are operating at identical core and bus frequencies.

In this document, in order to distinguish between two Pentium processor 75/90/100/120/133/ 150/166/200 in dual processing mode, one CPU will be designated as the “Primary” processor and the other as the “Dual” pr oces sor. N ote that this is a different concept than that of “master” and “checker” processors described above in the discussion on functional redundancy.

Due to the advanc ed 3.3V BiC MOS pr oc es s that it is produced on, the Pentium processor 75/90/100/120/133/150/166/200 dissipates less power than the Pentium processor 60/66. In addition to the SMM features des cr ibed above, the Pentium processor 75/90/100/120/133/150/ 166/200 supports cloc k c ontrol. When the cloc k to the Pentium processor 75/90/100/120/133/150/ 166/200 is stopped, power dissipation is virtually eliminated. The combination of these improvements makes the Pentium processor 75/90/100/120/133/150/166/200 a good choic e for energy-efficient desktop designs. Supporting an upgrade soc ket (Sock et 5/7) in the system will provide end-user upgradability by the addition of a Pentium OverDrive processor. Typical applications will realize a 40%–70% performance increase by addition of a Pentium OverDrive processor.

Socket 7 has been defined as the upgrade soc ket for the Pentium proc essor 75/90/100/120/133/150/ 166/200. The flexibility of the Socket 7 definition makes it backward compatible with Soc ket 5 and should be used for all new Pentium processorbased system designs.

The Pentium processor 75/90/100/120/133/ 150/166/200 supports fractional bus operation. This allows the internal proces sor core to operate at high frequencies, while communic ating with the external bus at lower frequencies.

The Pentium processor 75/90/100/120/133/ 150/166/200 contains an on-chip Advanced Programmable Interrupt Controller (APIC). This APIC implementation supports multiprocessor interrupt management (with symmetric interrupt distribution across all processors), multiple I/O subsystem support, 8259A compatibility, and interprocessor interrupt support.

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PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

1.3. Pentium® Processors with Voltage Reduction Technology

Currently, Intel's Pentium processor with Voltage Reduction Tec hnology family cons ists of two s ets of products. Please reference the appropriate datasheets f or c orr ec t pinout, mec hanic al, ther mal, and electrical specifications. Detailed information on Mobile Pentium processors based on 0.6 µm process technology (75, 90, and 100 MHz) is

available in the datasheet

Pentium® Processors at

iComp

Index 1000\120, 735\90, 610\75 MHz with

Voltage Reduction Technology

(Order Number

242973). For detailed information on Mobile Pentium processors based on 0.35 µm process technology (100, 120, and 133 MHz), see Intel datasheet

Pentium® Processors at iComp® Index 1110\133, 1000\120, 815\100 MHz with Voltage Reduction Technology

(Order Number 242557).

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

2.0. PINOUT

2.1. Pinout and Pin Descriptions

2.1.1. PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200 PINOUT

199719

Figure 2. Pentium® Processor 75/90/100/120/133/150/166/200 SPGA and PPGA Package Pinout

(Top Side View)

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PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

199703

Figure 3. Pentium® Processor 75/90/100/120/133/150/166/200 SPGA and PPGA Package Pinout

(Pin Side View)

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

2.1.2. PIN CROSS REFERENCE TABLE FOR PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 1. Pin Cross Reference by Pin Name

A3 AL35 A9 AK30 A15 AK26 A21 AF34 A27 AG33 A4 AM34 A10 AN31 A16 AL25 A22 AH36 A28 AK36 A5 AK32 A11 AL31 A17 AK24 A23 AE33 A29 AK34 A6 AN33 A12 AL29 A18 AL23 A24 AG35 A30 AM36 A7 AL33 A13 AK28 A19 AK22 A25 AJ35 A31 AJ33 A8 AM32 A14 AL27 A20 AL21 A26 AH34

Data

D0 K34 D13 B34 D26 D24 D39 D10 D52 E03 D1 G35 D14 C33 D27 C21 D40 D08 D53 G05 D2 J35 D15 A35 D28 D22 D41 A05 D54 E01 D3 G33 D16 B32 D29 C19 D42 E09 D55 G03 D4 F36 D17 C31 D30 D20 D43 B04 D56 H04 D5 F34 D18 A33 D31 C17 D44 D06 D57 J03 D6 E35 D19 D28 D32 C15 D45 C05 D58 J05 D7 E33 D20 B30 D33 D16 D46 E07 D59 K04 D8 D34 D21 C29 D34 C13 D47 C03 D60 L05

D9 C37 D22 A31 D35 D14 D48 D04 D61 L03 D10 C35 D23 D26 D36 C11 D49 E05 D62 M04 D11 B36 D24 C27 D37 D12 D50 D02 D63 N03 D12 D32 D25 C23 D38 C09 D51 F04

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PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 1. Pin Cross Reference by Pin Name

(Continued)

Control

A20M# AK08 BRDYC# Y03 FLUSH# AN07 PEN# Z34 ADS# AJ05 BREQ AJ01 FRCMC# Y35 PM0/BP0 Q03 ADSC# AM02 BUSCHK# AL07 HIT# AK06 PM1/BP1 R04 AHOLD V04 CACHE# U03 HITM# AL05 PRDY AC05 AP AK02 CPUTYP Q35 HLDA AJ03 PWT AL03 APCHK# AE05 D/C# AK04 HOLD AB04 R/S# AC35 BE0# AL09 D/P# AE35 IERR# P04 RESET AK20 BE1# AK10 DP0 D36 IGNNE# AA35 SCYC AL17 BE2# AL11 DP1 D30 INIT AA33 SMI# AB34 BE3# AK12 DP2 C25 INTR/LINT0 AD34 SMIACT# AG03 BE4# AL13 DP3 D18 INV U05 TCK M34 BE5# AK14 DP4 C07 KEN# W05 TDI N35 BE6# AL15 DP5 F06 LOCK# AH04 TDO N33 BE7# AK16 DP6 F02 M/IO# T04 TMS P34 BOFF# Z04 DP7 N05 NA# Y05 TRST# Q33 BP2 S03 EADS# AM04 NMI/LINT1 AC33 W/R# AM06 BP3 S05 EWBE# W03 PCD AG05 WB/WT# AA05 BRDY# X04 FERR# Q05 PCHK# AF04

APIC Clock Control Dual Processor Private Interface

PICCLK H34 CLK AK18 PBGNT# AD04 PICD0 J33 BF0 Y33 PBREQ# AE03 [DPEN#] BF1 X34 PHIT# AA03 PICD1 L35 STPCLK# V34 PHITM# AC03 [APICEN]

A07 A19 E37 L33 S01 W01 AC01 AN09 AN21 A09 A21 G01 L37 S37 W37 AC37 AN11 AN23 A11 A23 G37 N01 T34 Y01 AE01 AN13 AN25 A13 A25 J01 N37 U01 Y37 AE37 AN15 AN27 A15 A27 J37 Q01 U33 AA01 AG01 AN17 AN29 A17 A29 L01 Q37 U37 AA37 AG37 AN19

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 1. Pin Cross Reference by Pin Name

(Continued)

Control

B06 B22 M02 U35 AB36 AM08 AM24 B08 B24 M36 V02 AD02 AM10 AM26 B10 B26 P02 V36 AD36 AM12 AM28 B12 B28 P36 X02 AF02 AM14 AM30 B14 H02 R02 X36 AF36 AM16 AN37 B16 H36 R36 Z02 AH02 AM18 B18 K02 T02 Z36 AJ37 AM20 B20 K36 T36 AB02 AL37 AM22

NC/INC

A03 C01 S35 W35 AL01 AN01 AN05 A37 R34 W33 AL19 AN03 AN35 B02 S33

NOTE:

1. Please refer to socket 5 and socket 7 specifications if using socket 5 or socket 7.

2.2. Design Notes

For reliable operation, always c onnect unus ed inputs to an appropriate signal level. Unused active low inputs should be connected to V

. Unused active

HIGH inputs should be connected to GND. No Connect (NC) pins must remain unconnected.

Connection of NC pins may result in component failure or incompatibility with processor steppings.

2.3. Quick Pin Reference

This section gives a brief functional description of each of the pins. For a detailed descript ion, see the “Hardware Interface” chapter in the

Pentium

Processor Family Developer’s Manual

, Volume 1.

Note

All input pins must meet their AC/DC specifications to guarantee proper functional behavior.

The # symbol at the end of a signal name indicates that the active, or asserted state occurs when the signal is at a low voltage. When a # symbol is not present after t he signal name, the s ignal is ac tive, or asserted at the high voltage level.

The following pins exist on the Pentium processor 60/66 but have been removed from the Pentium processor 75/90/100/120/133/150/166/200:

• IBT, IU, IV, BT0-3 The following pins become I/O pins when two

Pentium processors 75/90/100/120/133/150/166/200 are operating in a dual processing environment:

• ADS#, CACHE#, HIT#, HITM#, HLDA#, LOCK#, M/IO#, D/C#, W/R#, SCYC

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PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 2. Quick Pin Reference

Symbol Type* Name and Function

A20M# I When the

address bit 20 mask

pin is asserted, the Pentium® processor 75/90/100/120/133/150/166/200 emulates the address wraparound at 1 Mbyte which occurs on the 8086 by masking physical address bit 20 (A20) before performing a lookup to the internal caches or driving a memory cycle on the bus. The effect of A20M# is undefined in protected mode. A20M# must be asserted only when the processor is in real mode.

A20M# is internally masked by the Pentium processor 75/90/100/120/133/150/ 166/200 when configured as a Dual processor.

A31-A3 I/O As outputs, the

address

lines of the processor along with the byte enables define the physical area of memory or I/O accessed. The external system drives the inquire address to the processor on A31-A5.

ADS# O The

address status

indicates that a new valid bus cycle is currently being driven

by the Pentium processor 75/90/100/120/133/150/166/200.

ADSC# O ADSC# is functionally identical to ADS#. AHOLD I In response to the assertion of

address hold

, the Pentium processor 75/90/100/120/133/150/166/200 will stop driving the address lines (A31-A3), and AP in the next clock. The rest of the bus will remain active so data can be returned or driven for previously issued bus cycles.

AP I/O

Address parity

is driven by the Pentium processor 75/90/100/120/133/150/166/200 with even parity information on all Pentium processor 75/90/100/120/133/150/166/200 generated cycles in the same clock that the address is driven. Even parity must be driven back to the Pentium processor 75/90/100/120/133/150/166/200 during inquire cycles on this pin in the same clock as EADS# to ensure that correct parity check status is indicated by the Pentium processor 75/90/100/120/133/150/166/200.

APCHK# O The

address parity check

status pin is asserted two clocks after EADS# is sampled active if the Pentium processor 75/90/100/120/133/150/166/200 has detected a parity error on the address bus during inquire cycles. APCHK# will remain active for one clock each time a parity error is detected (including during dual processing private snooping).

[APICEN] PICD1

Advanced Programmable Interrupt Controller Enable

enables or disables the on-chip APIC interrupt controller. If sampled high at the falling edge of RESET, the APIC is enabled. APICEN shares a pin with the PICD1 signal.

BE7#-BE5# BE4#-BE0#

I/O

The

byte enable

pins are used to determine which bytes must be written to external memory, or which bytes were requested by the CPU for the current cycle. The byte enables are driven in the same clock as the address lines (A31-3).

Additionally, the lower 4-byte enables (BE3#-BE0#) are used on the Pentium processor 75/90/100/120/133/150/166/200 as APIC ID inputs and are sampled at RESET.

In dual processing mode, BE4# is used as an input during Flush cycles.

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 2. Quick Pin Reference

(Continued)

Symbol Type* Name and Function

BF[1:0] I

Bus Frequency

determines the bus-to-core frequency ratio. BF[1:0] are sampled at RESET, and cannot be changed until another non-warm (1 ms) assertion of RESET. Additionally, BF[1:0] must not change values while RESET is active. See Table 3 for Bus Frequency Selections.

BOFF# I The

backoff

input is used to abort all outstanding bus cycles that have not yet completed. In response to BOFF#, the Pentium processor 75/90/100/120/133/150/ 166/200 will float all pins normally floated during bus hold in the next clock. The processor remains in bus hold until BOFF# is negated, at which time the Pentium processor 75/90/100/120/133/150/166/200 restarts the aborted bus cycle(s) in their entirety.

BP[3:2] PM/BP[1:0]

O The

breakpoint

pins (BP3-0) correspond to the debug registers, DR3-DR0. These pins externally indicate a breakpoint match when the debug registers are programmed to test for breakpoint matches.

BP1 and BP0 are multiplexed with the

performance monitoring

pins (PM1 and PM0). The PB1 and PB0 bits in the Debug Mode Control Register determine if the pins are configured as breakpoint or performance monitoring pins. The pins come out of RESET configured for performance monitoring.

BRDY# I The

burst ready

input indicates that the external system has presented valid data on the data pins in response to a read or that the external system has accepted the Pentium processor 75/90/100/120/133/150/166/200 data in response to a write request. This signal is sampled in the T2, T12 and T2P bus states.

BRDYC# I This signal has the same functionality as BRDY#. BREQ O The

bus request

output indicates to the external system that the Pentium processor 75/90/100/120/133/150/166/200 has internally generated a bus request. This signal is always driven whether or not the Pentium processor 75/90/100/120/133/150/166/200 is driving its bus.

BUSCHK# I The

bus check

input allows the system to signal an unsuccessful completion of a bus cycle. If this pin is sampled active, the Pentium processor 75/90/100/120/133/150/166/200 will latch the address and control signals in the machine check registers. If, in addition, the MCE bit in CR4 is set, the Pentium processor 75/90/100/120/133/150/166/200 will vector to the machine check exception.

NOTE:

To assure that BUSCHK# will always be recognized, STPCLK# must be deasserted any time BUSCHK# is asserted by the system, before the system allows another external bus cycle. If BUSCHK# is asserted by the system for a snoop cycle while STPCLK# remains asserted, usually (if MCE=1) the processor will vector to the exception after STPCLK# is deasserted. But if another snoop to the same line occurs during STPCLK# assertion, the processor can lose the BUSCHK# request.

Page 15

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 2. Quick Pin Reference

(Continued)

Symbol Type* Name and Function

CACHE# O For Pentium processor 75/90/100/120/133/150/166/200 -initiated cycles the

cache

pin indicates internal cacheability of the cycle (if a read), and indicates a burst write back cycle (if a write). If this pin is driven inactive during a read cycle, the Pentium processor 75/90/100/120/133/150/166/200 will not cache the returned data, regardless of the state of the KEN# pin. This pin is also used to determine the cycle length (number of transfers in the cycle).

CLK I The

clock

input provides the fundamental timing for the Pentium processor 75/90/100/120/133/150/166/200. Its frequency is the operating frequency of the Pentium processor 75/90/100/120/133/150/166/200 external bus, and requires TTL levels. All external timing parameters except TDI, TDO, TMS, TRST#, and PICD0-1 are specified with respect to the rising edge of CLK.

NOTE:

It is recommended that CLK begin toggling within 150 ms after V

reaches its proper operating level. This recommendation is to ensure long-term reliability of the device.

CPUTYP I

CPU type

distinguishes the Primary processor from the Dual processor. In a single processor environment, or when the Pentium processor 75/90/100/120/133/ 150/166/200 is acting as the Primary processor in a dual processing system, CPUTYP should be strapped to V

. The Dual processor should have CPUTYP

strapped to V

. For the Pentium OverDrive processor, CPUTYP will be used to determine whether the bootup handshake protocol will be used (in a dual socket system) or not (in a single socket system).

D/C# O The

data/code

output is one of the primary bus cycle definition pins. It is driven valid in the same clock as the ADS# signal is asserted. D/C# distinguishes between data and code or special cycles.

D/P# O The

dual/primary

processor indication. The Primary processor drives this pin low when it is driving the bus, otherwise it drives this pin high. D/P# is always driven. D/P# can be sampled for the current cycle with ADS# (like a status pin). This pin is defined only on the Primary processor. Dual processing is supported in a system only if both processors are operating at identical core and bus frequencies. Within these restrictions, two processors of different steppings may operate together in a system.

D63-D0 I/O These are the 64

data lines

for the processor. Lines D7-D0 define the least significant byte of the data bus; lines D63-D56 define the most significant byte of the data bus. When the CPU is driving the data lines, they are driven during the T2, T12, or T2P clocks for that cycle. During reads, the CPU samples the data bus when BRDY# is returned.

DP7-DP0 I/O These are the

data parity

pins for the processor. There is one for each byte of the data bus. They are driven by the Pentium processor 75/90/100/120/133/150/166/ 200 with even parity information on writes in the same clock as write data. Even parity information must be driven back to the Pentium processor 75/90/100/120/ 133/150/166/200 on these pins in the same clock as the data to ensure that the correct parity check status is indicated by the Pentium processor 75/90/100/120/ 133/150/166/200. DP7 applies to D63-56, DP0 applies to D7-0.

Page 16

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 2. Quick Pin Reference

(Continued)

Symbol Type* Name and Function

[DPEN#] PICD0

I/O

Dual processing enable

is an output of the Dual processor and an input of the Primary processor. The Dual processor drives DPEN# low to the Primary processor at RESET to indicate that the Primary processor should enable dual processor mode. DPEN# may be sampled by the system at the falling edge of RESET to determine if the dual-processor socket is occupied. DPEN# shares a pin with PICD0.

EADS# I This signal indicates that a valid

external address

has been driven onto the Pentium processor 75/90/100/120/133/150/166/200 address pins to be used for an inquire cycle.

EWBE# I The

external write buffer empty

input, when inactive (high), indicates that a write cycle is pending in the external system. When the Pentium processor 75/90/100/ 120/133/150/166/200 generates a write, and EWBE# is sampled inactive, the Pentium processor 75/90/100/120/133/150/166/200 will hold off all subsequent writes to all E- or M-state lines in the data cache until all write cycles have completed, as indicated by EWBE# being active.

FERR# O The

floating point error

pin is driven active when an unmasked floating point error occurs. FERR# is similar to the ERROR# pin on the Intel387™ math coprocessor. FERR# is included for compatibility with systems using DOS type floating point error reporting. FERR# is never driven active by the Dual processor.

FLUSH# I When asserted, the

cache flush

input forces the Pentium processor 75/90/100/ 120/133/150/166/200 to write back all modified lines in the data cache and invalidate its internal caches. A Flush Acknowledge special cycle will be generated by the Pentium processor 75/90/100/120/133/150/166/200 indicating completion of the write back and invalidation.

If FLUSH# is sampled low when RESET transitions from high to low, tristate test mode is entered.

If two Pentium processor 75/90/100/120/133/150/166/200 are operating in dual processing mode and FLUSH# is asserted, the Dual processor will perform a flush first (without a flush acknowledge cycle), then the Primary processor will perform a flush followed by a flush acknowledge cycle.

NOTE:

If the FLUSH# signal is asserted in dual processing mode, it must be deasserted at least one clock prior to BRDY# of the FLUSH Acknowledge cycle to avoid DP arbitration problems.

Page 17

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 2. Quick Pin Reference

(Continued)

Symbol Type* Name and Function

FRCMC# I The

functional redundancy checking master/checker

mode input is used to determine whether the Pentium processor 75/90/100/120/133/150/166/200 is configured in master mode or checker mode. When configured as a master, the Pentium processor 75/90/100/120/133/150/166/200 drives its output pins as required by the bus protocol. When configured as a checker, the Pentium processor 75/90/100/120/133/150/166/200 tristates all outputs (except IERR# and TDO) and samples the output pins.

The configuration as a master/checker is set after RESET and may not be changed other than by a subsequent RESET.

HIT# O The

hit

indication is driven to reflect the outcome of an inquire cycle. If an inquire cycle hits a valid line in either the Pentium processor 75/90/100/120/133/150/166/ 200 data or instruction cache, this pin is asserted two clocks after EADS# is sampled asserted. If the inquire cycle misses the Pentium processor 75/90/100/ 120/133/150/166/200 cache, this pin is negated two clocks after EADS#. This pin changes its value only as a result of an inquire cycle and retains its value between the cycles.

HITM# O The

hit to a modified line

output is driven to reflect the outcome of an inquire cycle. It is asserted after inquire cycles which resulted in a hit to a modified line in the data cache. It is used to inhibit another bus master from accessing the data until the line is completely written back.

HLDA O The

bus hold acknowledge

pin goes active in response to a hold request driven to the processor on the HOLD pin. It indicates that the Pentium processor 75/90/ 100/120/133/150/166/200 has floated most of the output pins and relinquished the bus to another local bus master. When leaving bus hold, HLDA will be driven inactive and the Pentium processor 75/90/100/120/133/150/166/200 will resume driving the bus. If the Pentium processor 75/90/100/120/133/150/166/200 has a bus cycle pending, it will be driven in the same clock that HLDA is de-asserted.

HOLD I In response to the

bus hold request

, the Pentium processor 75/90/100/120/133/ 150/166/200 will float most of its output and input/output pins and assert HLDA after completing all outstanding bus cycles. The Pentium processor 75/90/100/ 120/133/150/166/200 will maintain its bus in this state until HOLD is de-asserted. HOLD is not recognized during LOCK cycles. The Pentium processor 75/90/100/ 120/133/150/166/200 will recognize HOLD during reset.

IERR# O The

internal error

pin is used to indicate two types of errors, internal parity errors and functional redundancy errors. If a parity error occurs on a read from an internal array, the Pentium processor 75/90/100/120/133/150/166/200 will assert the IERR# pin for one clock and then shutdown. If the Pentium processor 75/90/100/120/133/150/166/200 is configured as a checker and a mismatch occurs between the value sampled on the pins and the corresponding value computed internally, the Pentium processor 75/90/100/120/133/150/166/200 will assert IERR# two clocks after the mismatched value is returned.

Page 18

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 2. Quick Pin Reference

(Continued)

Symbol Type* Name and Function

IGNNE# I Th i s i s t h e

ignore numeric error

input. This pin has no effect when the NE bit in CR0 is set to 1. When the CR0.NE bit is 0, and the IGNNE# pin is asserted, the Pentium processor 75/90/100/120/133/150/166/200 will ignore any pending unmasked numeric exception and continue executing floating-point instructions for the entire duration that this pin is asserted. When the CR0.NE bit is 0, IGNNE# is not asserted, a pending unmasked numeric exception exists (SW.ES = 1), and the floating point instruction is one of FINIT, FCLEX, FSTENV, FSAVE, FSTSW, FSTCW, FENI, FDISI, or FSETPM, the Pentium processor 75/90/100/120/133/150/166/200 will execute the instruction in spite of the pending exception. When the CR0.NE bit is 0, IGNNE# is not asserted, a pending unmasked numeric exception exists (SW.ES = 1), and the floating-point instruction is one other than FINIT, FCLEX, FSTENV, FSAVE, FSTSW, FSTCW, FENI, FDISI, or FSETPM, the Pentium processor 75/90/100/120/133/ 150/166/200 will stop execution and wait for an external interrupt.

IGNNE# is internally masked when the Pentium processor 75/90/100/120/133/150/ 166/200 is configured as a Dual processor.

INIT I The Pentium processor 75/90/100/120/133/150/166/200

initialization

input pin forces the Pentium proces s or 75/90/100/120/133/150/166/200 to begin execution in a known state. The processor state after INIT is the same as the state after RESET except that the internal caches, write buffers, and floating point registers retain the values they had prior to INIT. INIT may NOT be used in lieu of RESET after power-up.

If INIT is sampled high when RESET transitions from high to low, the Pentium proces s or 75/90/100/120/133/150/166/200 will perform built-in self test prior to the start of program execution.

INTR/LINT0 I An active

maskable interrupt

input indicates that an external interrupt has been generated. If the IF bit in the EFLAGS register is set, the Pentium processor 75/90/100/120/133/150/166/200 will generate two locked interrupt acknowledge bus cycles and vector to an interrupt handler after the current instruction execution is completed. INTR must remain active until the first interrupt acknowledge cycle is generated to assure that the interrupt is recognized.

If the local APIC is enabled, this pin becomes LINT0.

INV I The

invalidation

input determines the final cache line state (S or I) in case of an inquire cycle hit. It is sampled together with the address for the inquire cycle in the clock EADS# is sampled active.

KEN# I The

cache enable

pin is used to determine whether the current cycle is cacheable or not and is consequently used to determine cycle length. When the Pentium processor 75/90/100/120/133/150/166/200 generates a cycle that can be cached (CACHE# asserted) and KEN# is active, the cycle will be transformed into a burst line fill cycle.

LINT0/INTR I If the APIC is enabled, this pin is

local interrupt 0

. If the APIC is disabled, this pin

is INTR.

LINT1/NMI I If the APIC is enabled, this pin is

local interrupt 1

. If the APIC is disabled, this pin

is NMI.

Page 19

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 2. Quick Pin Reference

(Continued)

Symbol Type* Name and Function

LOCK# O The

bus lock

pin indicates that the current bus cycle is locked. The Pentium proces s or 75/90/100/120/133/150/166/200 will not allow a bus hold when LOCK# is asserted (but AHOLD and BOFF# are allowed). LOCK# goes active in the first clock of the first locked bus cycle and goes inactive after the BRDY# is returned for the last locked bus cycle. LOCK# is guaranteed to be de-asserted for at least one clock between back-to-back locked cycles.

M/IO# O The

memory/input-output

is one of the primary bus cycle definition pins. It is driven valid in the same clock as the ADS# signal is asserted. M/IO# distinguishes between memory and I/O cycles.

NA# I An active

next address

input indicates that the external memory system is ready to accept a new bus cycle although all data transfers for the current cycle have not yet completed. The Pentium process or 75/90/100/120/133/150/166/200 will issue ADS# for a pending cycle two clocks after NA# is asserted. The Pentium proces s or 75/90/100/120/133/150/166/200 supports up to 2 outstanding bus cycles.

NMI/LINT1 I Th e

non-maskable interrupt

request signal indicates that an external non-maskable

interrupt has been generated. If the local APIC is enabled, this pin becomes LINT1.

PBGNT# I/O

Private bus grant

is the grant line that is used when two Pentium processor 75/90/100/120/133/150/166/200 are configured in dual processing mode, in order to perform private bus arbitration. PBGNT# should be left unconnected if only one Pentium processor 75/90/100/120/133/150/166/200 exists in a system.

PBREQ# I/O

Private bus request

is the request line that is used when two Pentium processor 75/90/100/120/133/150/166/200 are configured in dual processing mode, in order to perform private bus arbitration. PBREQ# should be left unconnected if only one Pentium processor 75/90/100/120/133/150/166/200 exists in a system.

PCD O The

page cache disable

pin reflects the state of the PCD bit in CR3, the Page Directory Entry, or the Page Table Entry. The purpose of PCD is to provide an external cacheability indication on a page by page basis.

PCHK# O The

parity check

output indicates the result of a parity check on a data read. It is driven with parity status two clocks after BRDY# is returned. PCHK# remains low one clock for each clock in which a parity error was detected. Parity is checked only for the bytes on which valid data is returned.

When two Pentium process or 75/90/100/120/133/150/166/200 are operating in dual processing mode, PCHK# may be driven two or three clocks after BRDY# is returned.

PEN# I The

parity enable

input (along with CR4.MCE) determines whether a machine check exception will be taken as a result of a data parity error on a read cycle. If this pin is sampled active in the clock a data parity error is detected, the Pentium proces s or 75/90/100/120/133/150/166/200 will latch the address and control signals of the cycle with the parity error in the machine check registers. If, in addition, the machine check enable bit in CR4 is set to “1”, the Pentium proces s or 75/90/100/120/133/150/166/200 will vector to the machine check exception before the beginning of the next instruction.

Page 20

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 2. Quick Pin Reference

(Continued)

Symbol Type* Name and Function

PHIT# I/O

Private hit

is a hit indication used when two Pentium proces s or 75/90/100/120/ 133/150/166/200 are configured in dual processing mode, in order to maintain local cache coherency. PHIT# should be left unconnected if only one Pentium processor 75/90/100/120/133/150/166/200 exists in a system.

PHITM# I/O

Private modified hit

is a hit indication used when two Pentium processor 75/90/100/120/133/150/166/200 are configured in dual processing mode, in order to maintain local cache coherency. PHITM# should be left unconnected if only one Pentium processor 75/90/100/120/133/150/166/200 exists in a system.

PICCLK I The APIC interrupt controller serial data bus clock is driven into the

programmable interrupt controller clock

input of the Pentium process or

75/90/100/120/133/150/166/200.

PICD0-1 [DPEN#] [APICEN]

I/O

Programmable interrupt controller data lines 0-1

of the Pentium process or 75/90/100/120/133/150/166/200 comprise the data portion of the APIC 3-wire bus. They are open-drain outputs that require external pull-up resistors. These signals share pins with DPEN# and APICEN respectively.

PM/BP[1:0] O These pins function as part of the performance monitoring feature.

The breakpoint 1-0 pins are multiplexed with the

performance monitoring 1-0

pins. The PB1 and PB0 bits in the Debug Mode Control Register determine if the pins are configured as breakpoint or performance monitoring pins. The pins come out of RESET configured for performance monitoring.

PRDY O The

probe ready

output pin indicates that the processor has stopped normal

execution in response to the R/S# pin going active, or Probe Mode being entered.

PWT O The

page write through

pin reflects the state of the PWT bit in CR3, the page directory entry, or the page table entry. The PWT pin is used to provide an external write back indication on a page-by-page basis.

R/S# I The

run/stop

input is an asynchronous, edge-sensitive interrupt used to stop the normal execution of the processor and place it into an idle state. A high to low transition on the R/S# pin will interrupt the processor and cause it to stop execution at the next instruction boundary.

RESET I

RESET

forces the Pentium process or 75/90/100/120/133/150/166/200 to begin execution at a known state. All the Pentium proces s or 75/90/100/120/133/150/ 166/200 internal caches will be invalidated upon the RESET. Modified lines in the data cache are not written back. FLUSH#, FRCMC# and INIT are sampled when RESET transitions from high to low to determine if tristate test mode or checker mode will be entered, or if BIST will be run.

SCYC O The

split cycle

output is asserted during misaligned LOCKed transfers to indicate that more than two cycles will be locked together. This signal is defined for locked cycles only. It is undefined for cycles which are not locked.

SMI# I The

system management interrupt

causes a system management interrupt request to be latched internally. When the latched SMI# is recognized on an instruction boundary, the processor enters System Management Mode.

Page 21

PENTIUM® PROCESSO R 75/ 90/ 100/ 120/ 133/ 150/ 166/ 200

Table 2. Quick Pin Reference

(Continued)

Symbol Type* Name and Function

SMIACT# O An active

system management interrupt active

output indicates that the

processor is operating in System Management Mode.

STPCLK# I Assertion of the

stop clock

input signifies a request to stop the internal clock of the Pentium proces s or 75/90/100/120/133/150/166/200 thereby causing the core to consume less power. When the CPU recognizes STPCLK#, the processor will stop execution on the next instruction boundary, unless superseded by a higher priority interrupt, and generate a stop grant acknowledge cycle. When STPCLK# is asserted, the Pentium proces s or 75/90/100/120/133/150/166/200 will still respond to interprocessor and external snoop requests.

TCK I The

testability clock

input provides the clocking function for the Pentium processor 75/90/100/120/133/150/166/200 boundary scan in accordance with the IEEE Boundary Scan interface (Standard 1149.1). It is used to clock state information and data into and out of the Pentium process or 75/90/100/120/133/150/ 166/200 during boundary scan.

TDI I The

test data input

is a serial input for the test logic. TAP instructions and data are shifted into the Pentium process or 75/90/100/120/133/150/166/200 on the TDI pin on the rising edge of TCK when the TAP controller is in an appropriate state.

TDO O The

test data output

is a serial output of the test logic. TAP instructions and data are shifted out of the Pentium process or 75/90/100/120/133/150/166/200 on the TDO pin on TCK's falling edge when the TAP controller is in an appropriate state.

TMS I The value of the

test mode select

input signal sampled at the rising edge of TCK

controls the sequence of TAP controller state changes.

TRST# I When asserted, the

test reset

input allows the TAP controller to be

asynchronously initialized.

I The Pentium processor 75/90/100/120/133/150/166/200 has 53 3.3V

power

inputs.

I The Pentium processor 75/90/100/120/133/150/166/200 has 53

ground

inputs.

W/R# O

Write/read

is one of the primary bus cycle definition pins. It is driven valid in the same clock as the ADS# signal is asserted. W/R# distinguishes between write and read cycles.

WB/WT# I The

write back/write through

input allows a data cache line to be defined as write back or write through on a line-by-line basis. As a result, it determines whether a cache line is initially in the S or E state in the data cache.

NOTE:

•

The pins are classified as Input or Output based on their function in Master Mode. See the Functional Redundancy Checking section in the “Error Detection” chapter of the

Pentium

Processor Family Developer’s Manual

, Volume 1, for

further information.

Page 22

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 3. Bus Frequency Selections

Pentium

Processor Core

Frequency (max)

External Bus

Frequency (max) Bus/Core Ratio BF1 BF0

200 MHz 66 MHz 1/3 0 1 166 MHz 66 MHz 2/5 0 0 150 MHz 60 MHz 2/5 0 0 133 MHz 66 MHz 1/2 1 0 120 MHz 60 MHz 1/2 1 0 100 MHz 66 MHz 2/3 1 1 100 MHz 50 MHz 1/2 1 0

90 MHz 60 MHz 2/3 1 1 75 MHz 50 MHz 2/3 1 1

2.4. Pin Reference Tables

Table 4. Output Pins

Name Active Level When Floated

ADS#* Low Bus Hold, BOFF# ADSC# Low Bus Hold, BOFF# APCHK# Low BE7#-BE5# Low Bus Hold, BOFF# BREQ High CACHE#* Low Bus Hold, BOFF# D/P#** n/a FERR#** Low HIT#* Low HITM#* Low HLD A* High IERR# Low LOCK#* Low Bus Hold, BOFF#

Page 23

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 4. Output Pins

(Continued)

Name Active Level When Floated

M/IO#*, D/C#*, W/R#* n/a Bus Hold, BOFF# PCHK# Low BP3-2, PM1/BP1, PM0/BP0 High PRDY High PWT, PCD High Bus Hold, BOFF# SCYC* High Bus Hold, BOFF# SMIACT# Low TDO n/a All states except Shift-DR and Shift-IR

NOTES:

All output and input/output pins are floated during tristate test mode and checker mode (except IERR#). * These are I/O signals when two Pentium

processor 75/90/100/120/133/150/166/200 are operating in dual processing

mode.

** These signals are undefined when the CPU is configured as a Dual Processor.

Table 5. Input Pins

Name Active Level

Synchronous/

Asynchronous Internal Resistor Qualified

A20M#* Low Asynchronous AHOLD High Synchronous BF[1:0] High Synchronous/RESET Pullup BOFF# Low Synchronous BRDY# Low Synchronous Bus State T2, T12, T2P BRDYC# Low Synchronous Pullup Bus State T2, T12, T2P BUSCHK# Low Synchronous Pullup BRDY# CLK n/ a CPUTYP High Synchronous/RESET EADS# Low Synchronous EWBE# Low Synchronous BRDY# FLUSH# Low Asynchronous FRCMC# Low Asynchronous HOLD High Synchronous

Page 24

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 5. Input Pins

(Continued)

Name Active Level

Synchronous/

Asynchronous Internal Resistor Qualified

IGNNE#* Low Asynchronous INIT High Asynchronous INTR High Asynchronous INV High Synchronous EADS# KEN# Low Synchronous First BRDY#/NA# NA# Low Synchronous Bus State T2,TD,T2P NMI High Asynchronous PEN# Low Synchronous BRDY# PICCLK High Asynchronous Pullup R/S# n/a Asynchronous Pullup RESET High Asynchronous SMI# Low Asynchronous Pullup STPCLK# Low Asynchronous Pullup

TCK n/a Pullup TDI n/a Synchronous/TCK Pullup TCK TMS n/a Synchronous/TCK Pullup TCK TRST# Low Asynchronous Pullup WB/WT# n/a Synchronous First BRDY#/NA#

NOTE:

* Undefined when the CPU is configured as a Dual processor.

Page 25

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 6. Input/Output Pins

Name

Active

Level When Floated

Qualified

(when an input)

Internal

Resistor

A31-A3 n/a Address Hold, Bus Hold, BOFF# EADS# AP n/a Address Hold, Bus Hold, BOFF# EADS# BE4#-BE0# Low Address Hold, Bus Hold, BOFF# RESET Pulldown* D63-D0 n/a Bus Hold, BOFF# BRDY# DP7-DP0 n/a Bus Hold, BOFF# BRDY# PICD0[DPEN#] Pullup PICD1[APICEN] Pulldown

NOTE:

All output and input/output pins are floated during tristate test mode (except TDO) and checker mode (except IERR# and TDO).

* BE3#-BE0# have Pulldowns during RESET only.

Table 7. Inter-Processor Input/Output Pins

Name Active Level Internal Resistor

PHIT# Low Pullup PHITM# Low Pullup PBGNT# Low Pullup PBREQ# Low Pullup

NOTE:

For proper inter-processor operation, the system cannot load these signals.

Page 26

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

2.5. Pin Grouping According to Function

Table 8 organizes the pins with respect to their function.

Table 8. Pin Functional Grouping

Function Pins

Clock CLK Initialization RESET, INIT, BF1–BF0 Address Bus A31-A3, BE7#–BE0# Address Mask A20M# Data Bus D63-D0 Address Parity AP, APCHK# APIC Support PICCLK, PICD0-1 Data Parity DP7-DP0, PCHK#, PEN# Internal Parity Error IERR# System Error BUSCHK# Bus Cycle Definition M/IO#, D/C#, W/R#, CACHE#, SCYC, LOCK# Bus Control ADS#, ADSC#, BRDY#, BRDYC#, NA# Page Cacheability PCD, PWT Cache Control KEN#, WB/WT# Cache Snooping/Consistency AHOLD, EADS#, HIT#, HITM#, INV Cache Flush FLUSH# Write Ordering EWBE# Bus Arbitration BOFF#, BREQ, HOLD, HLDA Dual Processing Private Bus Control PBGNT#, PBREQ#, PHIT#, PHITM# Interrupts INTR, NMI Floating Point Error Reporting FERR#, IGNNE# System Management Mode SMI#, SMIACT# Functional Redundancy Checking FRCMC# (IERR#) TAP Port TCK, TMS, TDI, TDO, TRST# Breakpoint/Performance Monitoring PM0/BP0, PM1/BP1, BP3-2 Power Management STPCLK# Miscellaneous Dual Processing CPUTYP, D/P# Probe Mode R/S#, PRDY

Page 27

PENTIUM® PROCESSO R 75/ 90/ 100/ 120/ 133/ 150/ 166/ 200

3.0. ELECTRICAL SPECIFICATIONS

This section describes the electrical differences between the Pentium processor 60/66 and the Pentium processor 75/90/100/120/133/150/166/200 and the DC and AC specifications.

3.1. Electrical Differences Between Pentium® Processor 75/90/100/120/133/150/166/200 and Pentium Processor 60/66

Pentium Processor

60/66 Electrical

Characteristic

Difference in Pentium

Processor

75/90/100/120/133/

150/166/200

5V Power Supply 3.3V Power Supply* 5V TTL Inputs/Outputs 3.3V Inputs/Outputs Pentium Processor

60/66 Buffer Models

Pentium Processor 75/90/100/120/133/150/ 166/200 Buffer Models

* The upgrade socket specifies two 5V inputs (section 6.0.).

The sections that follow will briefly point out some ways to design with these electrical differences.

3.1.1. 3.3V POWER SUPPLY

The Pentium processor 75/90/100/120/133/150/ 166/200 has all V

3.3V inputs. By connecting all

Pentium processor 60/66 V

inputs to a common and dedicated power plane, that plane can be converted to 3.3V for the Pentium processor 75/90/100/120/133/150/166/200.

The CLK and PICC LK inputs can tolerate a 5V input signal. This allows the Pentium processor 75/90/100/120/133/150/166/200 to use 5V or 3.3V clock drivers.

3.1.2. 3.3V INPUTS AND OUTPUTS

The inputs and outputs of the Pentium processor 75/90/100/120/133/150/166/200 are 3.3V JEDEC standard levels. Both inputs and outputs are also TTL-compatible, although the inputs cannot tolerate voltage swings above the 3.3V V

max.

For Pentium processor 75/90/100/120/133/150/ 166/200 outputs, if the Pentium processor 60/66 system support components use TTL-compatible

inputs, they will interface to the Pentium processor 75/90/100/120/133/150/166/200 without extra logic. This is because the Pentium processor 75/90/100/120/133/150/166/200 drives according to the 5V TTL specification (but not beyond 3.3V).

For Pentium processor 75/90/100/120/133/150/ 166/200 inputs, the voltage must not exceed the 3.3V V

IH3

maximum specification. System support components can consist of 3.3V devices or opencollector devices. 3.3V support components may interface to the Pentium proc essor 60/66 sinc e they typically meet 5V TTL specifications. In an opencollector configuration, the external resistor may be biased with the CPU V

; as the CPU's V

changes from 5V to 3.3V, so does this signal's maximum drive.

The CLK and PICCLK inputs of the Pentium processor 75/90/100/120/133/150/166/200 are 5V tolerant, so they are electrically identical to the Pentium proces sor 60/66 clock input. This allows a Pentium processor 60/66 clock driver to drive the Pentium processor 75/90/100/120/133/150/166/200.

All pins, other than the CLK and PICCLK inputs, are

3.3V-only. If an 8259A inter rupt c ont roller is us ed, for example, the system must provide level converters between the 8259A and the Pentium processor 75/90/100/120/133/150/166/200.

3.1.3. 3.3V PENTIUM

PROCESSOR 75/90/100/120/133/150/166/200 BUFFER MODELS

The structure of the buffer models of the Pentium processor 75/90/100/120/133/150/166/200 is the same as that of the Pentium process or 60/66 , but the values of the components change since the Pentium processor 75/90/100/120/133/150/166/200 buffers are 3.3V buffers on a different process.

Despite this difference, the simulation results of Pentium processor 75/90/100/120/133/150/166/200 buffers and Pentium processor 60/66 buffers look nearly identical. Since the 0pF AC specifications of the Pentium processor 75/90/100/120/133/150/ 166/200 are derived from the Pentium processor 60/66 specifications, the system should see little difference between the AC behavior of the Pentium processor 75/90/100/120/133/150/166/200 and the Pentium processor 60/66.

Page 28

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

To meet specifications, simulate the AC timings with Pentium processor 75/90/100/120/133/150/166/200 buffer models. Pay special attention to the new signal quality restrictions imposed by 3.3V buffers.

3.2. Absolute Maximum Ratings

The values listed below are stress ratings only. Functional operation at the max imums is not implied or guaranteed. Functional operating conditions are given in the AC and DC specification tables.

Extended exposure to the maximum ratings may affect device reliability. Furthermore, although the Pentium processor 75/90/100/120/133/150/166/200 contains protective circuitry to resist damage from static elec tric disc harge, always tak e precautions to avoid high static voltages or electric fields.

Case temperature under bias ...........−65°C to 110°C

Storage temperature.........................−65°C to 150°C

3VSupply voltage with respect to V

.......................... −0.5V to +4.6V

3V Only Buffer DC Input Voltage

..........−0.5V to V

+ 0.5; not to exceed V

CC3

max

(2)

5V Safe Buffer

DC Input Voltage........................−0.5V to 6.5V

(1,3)

NOTES:

1. Applies to CLK and PICCLK.

2. Applies to all Pentium processor 75/90/100/120/133/150/166/200 inputs except CLK and PICCLK.

3. See overshoot/undershoot transient spec.

* WARNING: Stressing the device beyond the “Absolute Maximum Ratings” may c ause permanent damage. Thes e are stress ratings only. Operation beyond the “Operating Conditions” is not recommended and extended exposure beyond the “Operating Conditions” may affect device reliability.

3.3. DC Specifications

Table 9, Table 10, and Table 11 list the DC specific ations which apply to the Pentium proc essor 75/90/100/120/133/150/166/200. The Pentium process or 75/90/100/120/133/150/166/200 is a 3.3V part internally. T he CLK and PICCLK inputs may be

3.3V or 5V inputs. Since the 3.3V (5V-safe) input levels defined in Table 9 are the same as the 5V TT L levels, the CLK and PICCLK inputs are compatible with exis ting 5V cloc k dr ivers . The power diss ipation specification in Table 12 is provided for design of thermal solutions during operation in a sustained maximum level. This is the worst case power the device would dissipate in a system. This number is used for design of a thermal solution for the device.

Page 29

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 9. 3.3V DC Specifications

CASE

= 0 to 70°C; 3.135V < VCC < 3.6V

Symbol Parameter Min Max Unit Notes

IL3

Input Low Voltage -0.3 0.8 V TTL Level(3)

IH3

Input High Voltage 2.0 VCC+0.3 V TTL Level(3)

OL3

Output Low Voltage 0.4 V TTL Level(1,3)

OH3

Output High Voltage 2.4 V TTL Level(2,3)

CC3

Power Supply Current 4600

4250 3850 3400 3730 3250 2950 2650

mA mA mA mA mA mA mA mA

200 Mhz (4) 166 MHz (4) 150 MHz (4) 133 MHz (4)

120 Mhz (4,5)

100 Mhz (4)

90 Mhz (4) 75 Mhz (4)

NOTES:

1. Parameter measured at 4 mA.

2. Parameter measured at 3 mA.

3. 3.3V TTL levels apply to all signals except CLK and PICCLK.

4. This value should be used for power supply design. It was determined using a worst case instruction mix and V

= 3.6V. Power supply transient response and decoupling capacitors must be sufficient to handle the instantaneous current changes occurring during transitions from stop clock to full active modes. For more information, refer to section 3.4.3.

5. Please also check

Pentium®.Processor Specification Update

(Order Number 24280).

Table 10. 3.3V (5V-Safe) DC Specifications

Symbol Parameter Min Max Unit Notes

IL5

Input Low Voltage -0.3 0.8 V TTL Level(1)

IH5

Input High Voltage 2.0 5.55 V TTL Level(1)

NOTE:

1. Applies to CLK and PICCLK only.

Page 30

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 11. Input and Output Characteristics

Symbol Parameter Min Max Unit Notes

Input Capacitance 15 pF 4

Output Capacitance 20 pF 4

I/O

I/O Capacitance 25 pF 4

CLK

CLK Input Capacitance 15 pF 4

TIN

Test Input Capacitance 15 pF 4

TOUT

Test Output Capacitance 20 pF 4

TCK

Test Clock Capacitance 15 pF 4

Input Leakage Current ±15 µA 0 < VIN < V

CC3

(1)

Output Leakage Current ±15 µA 0 < VIN < V

CC3

(1)

Input Leakage Current 200 µA VIN = 2.4V(3)

Input Leakage Current -400 µA VIN = 0.4V(2)

NOTES:

1. This parameter is for input without pullup or pulldown.

2. This parameter is for input with pullup.

3. This parameter is for input with pulldown.

4. Guaranteed by design.

Page 31

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 12. Power Dissipation Requirements for Thermal Solution Design

Parameter Typical

(1)

Max Unit Notes

Active Power Dissipation 6.5 15.5(7) Watts 200 MHz

5.4 14.5(7) Watts 166 MHz

4.9 11.6(2) Watts 150 MHz

4.3 11.2(2) Watts 133 MHz

5.06 12.81(6) Watts 120 MHz

3.9 10.1(2) Watts 100 MHz

3.5 9.0(2) Watts 90 MHz

3.0 8.0(2) Watts 75 MHz Stop Grant and Auto Halt 2.5 Watts 200 Mhz (3) Powerdown Power Dissipation 2.1 Watts 166 MHz (3)

1.9 Watts 150 MHz (3)

1.7 Watts 133 Mhz (3)

1.76 Watts 120 Mhz (3)

1.55 Watts 100 Mhz (3)

1.40 Watts 90 Mhz (3)

1.20 Watts 75 MHz (3)

Stop Clock Power Dissipation 0.02 <0.3 Watts (4,5)

NOTES:

1. This is the typical power dissipation in a system. This value was the average value measured in a system using a typical device at nominal V

(3.3V for 75, 100, 120, 133, and 150 Mhz processors and 3.5V for 166 and 200 Mhz processors)

running typical applications. This value is highly dependent upon the specific system configuration.

2. Systems must be designed to thermally dissipate the maximum active power dissipation. It is determined using worst case instruction mix with V

= 3.3V and also takes into account the thermal time constants of the package.

3. Stop Grant/Auto Halt Powerdown Power Dissipation is determined by asserting the STPCLK# pin or executing the HALT instruction.

4. Stop Clock Power Dissipation is determined by asserting the STPCLK# pin and then removing the external CLK input.

5. Complete characterization of this specification was still in process at the time of print. Please contact Intel for the latest information. The final specification will be less than 0.1W.

6. Systems must be designed to thermally dissipate the maximum active power dissipation. It is determined using worst case instruction mix with V

=3.52V and also takes into account the thermal time constants of the package.

7. Systems must be designed to thermally dissipate the maximum active power dissipation. It is determined using worst-case instruction mix with V

=3.5V, and also takes into account the thermal time constants of the package.

Page 32

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

3.4. AC Specifications

The AC specifications of the Pentium processor 75/90/100/120/133/150/166/200 consist of setup times, hold times, and valid delays at 0 pF.

3.4.1. PRIVATE BUS

When two Pentium processor 75/90/100/120/ 133/150/166/200 are operating in dual processor mode, a “private bus” exis ts to arbitrat e for the CPU bus and

maintain local cache coherency. The private bus consists of two pinout changes:

1. Five pins are added: PBREQ #, P BG N T#, P HI T#, PHITM#, D/P#.

2. Ten output pins become I/O pins: AD S#, D/C#, W/R#, M/IO#, CACHE#, LOCK#, HIT#, HITM#, HLDA, SCYC.

The new pins are given AC specifications of valid delays at 0 pF, set up times , and hold times. Simulate with these parameters and their res pectiv e I/O buffer models to guarantee that proper timings are met.

The AC specification gives input setup and hold times for the ten signals that bec ome I/O pins . T hes e setup and hold times mus t only be met when a dual processor is present in the system.

3.4.2. POWER AND GROUND

For clean on-chip power distribution, the Pentium processor 75/90/100/120/133/150/166/200 has 53 V

(power) and 53 VSS (ground) inputs. Pow er and

ground connections must be made to all external V

and VSS pins of the Pentium processor 75/90/100/120/133/150/166/200. O n the circ uit boar d all V

pins must be connected to a VCC plane. All

pins must be connected to a VSS plane.

3.4.3. DECOUPLING RECOMMENDATIONS

Liberal decoupling capacitance should be placed near the Pentium processor 75/90/100/120/133/ 150/166/200. The Pentium processor 75/90/100/ 120/133/150/166/200 driving its large address and data buses at high frequencies can cause transient power surges, particularly when driving large capacitive loads.

Low inductance capacitors and interconnects are recommended for best high frequency electrical performance. Inductance can be reduced by shortening c ircuit board trac es between the Pentium processor 75/90/100/120/133/150/166/200 and decoupling capacitors as much as possible.

These capacitors should be evenly distributed around each component on the 3.3V plane. Capacitor values should be chosen to ensure they eliminate both low and high frequency noise components.

For the Pentium processor 75/90/100/120/133/ 150/166/200, the power consumption can transition from a low level of pow er to a much higher level (or high to low power) very rapidly. A typical example would be entering or exiting the Stop Grant state. Another example would be executing a HALT instruction, causing the Pentium processor 75/90/100/120/133/150/166/200 to enter the Auto HALT Powerdown s tate, or transitioning from HALT to the Normal state. All of these examples may cause abrupt changes in the power being cons umed by t he Pentium processor 75/90/100/120/133/150/166/200. Note that the Auto HALT Powerdown feature is always enabled even when other power management features are not implemented.

Bulk storage capacitors with a low ESR (Effective Series Resistance) in the 10 to 100 µf range are required to maintain a regulated supply voltage during the interval between the time the cur rent load changes and the point that the regulated power supply output can react to the change in load. In order to reduce the ESR, it may be necessary to place several bulk storage capacitors in parallel.

These capac itor s s hould be plac ed near the P entium processor 75/90/100/120/133/150/166/200 (on the

3.3V plane) to ensure that the supply voltage stays within specified limits during changes in the supply current during operation.

3.4.4. CONNECTION SPECIFICATIONS

All NC and INC pins must remain unconnected. For reliable operation, always c onnect unus ed inputs

to an appropriate signal level. Unused active low inputs should be connected to V

. Unused active

high inputs should be connected to ground.

Page 33

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

3.4.5. AC TIMING TABLES

3.4.5.1. AC Timing Table for a 50-MHz Bus

The AC specifications given in Table 13 and Table 14 consist of output delays, input setup requirements and input hold requirements for a 50-MHz external bus. All AC specifications (with the exception of

those for the TAP signals and APIC signals) are relative to the rising edge of the CLK input.

All timings are ref erenc ed to 1. 5V for both “0” and “1” logic levels unless otherwise specified. Within the sampling window, a synchronous input must be stable for correct Pentium processor 75/90/100/120/133/150/166/200 operation.

Page 34

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 13. Pentium® Processor 75 and 100 MHz AC Specifications for 50-MHz Bus Operation

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

Frequency 25.0 50.0 MHz Max Core Freq =

100 MHz

CLK Period 20.0 40.0 nS 4

CLK Period Stability ±250 pS Adjacent Clocks

(1,25)

CLK High Time 4.0 nS 4 2V,

(1)

CLK Low Time 4.0 nS 4 0.8V, (1)

CLK Fall Time 0.15 1.5 nS 4 (2.0V–0.8V), (1,5)

CLK Rise Time 0.15 1.5 nS 4 (0.8V–2.0V), (1,5)

PWT, PCD, CACHE# Valid Delay 1.0 7.0 nS 5

AP Valid Delay 1.0 8.5 nS 5

BE0-7#, LOCK# Valid Delay 0.9 7.0 nS 5

ADS#, ADSC#, D/C#, M/IO#, W/R#, SCYC Valid Delay

0.8 7.0 nS 5

A3-A16 Valid Delay 0.5 7.0 nS 5

A17-A31 Valid Delay 0.6 7.0 nS 5

ADS#, ADSC#, AP, A3-A31, PWT, PCD, BE0-7#, M/IO#, D/C#, W/R#, CACHE#, SCYC, LOCK# Float Delay

10.0 nS 6 1

Page 35

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 13. Pentium® Processor 75 and 100 MHz AC Specifications for 50-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

APCHK#, IERR#, FERR#, PCHK# Valid Delay

1.0 8.3 nS 5 4

BREQ, HLDA, SMIACT# Valid Delay 1.0 8.0 nS 5 4

10a

HIT# Valid Delay 1.0 8.0 nS 5

10b

HITM# Valid Delay 0.7 6.0 nS 5

11a

PM0-1, BP0-3 Valid Delay 1.0 10.0 nS 5

11b

PRDY Valid Delay 1.0 8.0 nS 5

D0-D63, DP0-7 Write Data Valid Delay 1.3 8.5 nS 5

D0-D63, DP0-3 Write Data Float Delay 10.0 nS 6 1

A5-A31 Setup Time 6.5 nS 7 26

A5-A31 Hold Time 1.0 nS 7

16a

INV, AP Setup Time 5.0 nS 7

16b

EADS# Setup Time 6.0 nS 7

EADS#, INV, AP Hold Time 1.0 nS 7

18a

KEN# Setup Time 5.0 nS 7

18b

NA#, WB/WT# Setup Time 4.5 nS 7

KEN#, WB/WT#, NA# Hold Time 1.0 nS 7

BRDY#, BRDYC# Setup Time 5.0 nS 7

BRDY#, BRDYC# Hold Time 1.0 nS 7

BOFF# Setup Time 5.5 nS 7

22a

AHOLD Setup Time 6.0 nS 7

AHOLD, BOFF# Hold Time 1.0 nS 7

BUSCHK#, EWBE#, HOLD, PEN# Setup Time

5.0 nS 7

BUSCHK#, EWBE#, PEN# Hold Time 1.0 nS 7

25a

HOLD Hold Time 1.5 nS 7

A20M#, INTR, STPCLK# Setup Time 5.0 nS 7 12, 16

A20M#, INTR, STPCLK# Hold Time 1 .0 nS 7 13

Page 36

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 13. Pentium® Processor 75 and 100 MHz AC Specifications for 50-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

INIT, FLUSH#, NMI, SMI#, IGNNE# Setup Time

5.0 nS 7 12, 16, 17

INIT, FLUSH#, NMI, SMI#, IGNNE# Hold Time

1.0 nS 7 13

INIT, FLUSH#, NMI, SMI#, IGNNE# Pulse Width, Async

2.0 CLKs 7 15, 17

R/S# Setup Time 5.0 nS 7 12, 16, 17

R/S# Hold Time 1.0 nS 7 13

R/S# Pulse Width, Async. 2. 0 CLKs 7 15, 17

D0-D63, DP0-7 Read Data Setup Time 3.8 nS 7

D0-D63, DP0-7 Read Data Hold Time 1.5 nS 7

RESET Setup Time 5.0 nS 8 11, 12, 16

RESET Hold Time 1.0 nS 8 11, 13

RESET Pulse Width, V

& CLK Stable 15 CLKs 8 11, 17

RESET Active After VCC & CLK Stable 1.0 mS 8 Power up

Reset Configuration Signals (INIT, FLUSH#, FRCMC#) Setup Time

5.0 nS 8 12, 16, 17

Reset Configuration Signals (INIT, FLUSH#, FRCMC#) Hold Time

1.0 nS 8 13

42a

Reset Configuration Signals (INIT, FLUSH#, FRCMC#) Setup Time, Async

2.0 CLKs 8 To RESET falling edge(16)

42b

Reset Configuration Signals (INIT, FLUSH#, FRCMC#, BRDYC#, BUSCHK#) Hold Time, Async

2.0 CLKs 8 To RESET falling edge(27)

42c

Reset Configuration Signals (BRDYC#, BUSCHK#) Setup Time, Async.

3.0 CLKs 8 To RESET falling edge(27)

42d

Reset Configuration Signal BRDYC# Hold Time, RESET driven synchronously

1.0 nS To RESET falling edge

(1,27)

43a

BF, CPUTYP Setup Time 1.0 mS 8 To RESET falling

edge(22)

43b

BF, CPUTYP Hold Time 2.0 CLKs 8 To RESET falling

edge(22)

43c

APICEN, BE4# Setup Time 2.0 CLKs 8 To RESET falling

edge

Page 37

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 13. Pentium® Processor 75 and 100 MHz AC Specifications for 50-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

43d

APICEN, BE4# Hold Time 2.0 CLKs 8 To RESET falling

edge

TCK Frequency 16.0 MHz

TCK Period 62.5 nS 4

TCK High Time 25.0 nS 4 2V(1)

TCK Low Time 25.0 nS 4 0.8V

(1)

TCK Fall Time 5.0 nS 4 (2.0V–0.8V)(1,8,9)

TCK Rise Time 5.0 nS 4 (0.8V–2.0V)(1,8,9)

TRST# Pulse Width 40.0 nS 10 Asynchronous(1)

TDI, TMS Setup Time 5.0 nS 9 7

TDI, TMS Hold Time 13.0 nS 9 7

TDO Valid Delay 3.0 20.0 nS 9 8

TDO Float Delay 25.0 nS 9 1, 8

All Non-Test Outputs Valid Delay 3.0 20.0 nS 9 3, 8, 10

All Non-Test Outputs Float Delay 25.0 nS 9 1, 3, 8, 10

All Non-Test Inputs Setup Time 5.0 nS 9 3, 7, 10

All Non-Test Inputs Hold Time 13.0 nS 9 3, 7, 10

APIC AC Specifications

60a

PICCLK Frequency 2.0 16.66 MHz

60b

PICCLK Period 60.0 500.0 nS 4

60c

PICCLK High Time 15.0 nS 4

60d

PICCLK Low Time 15.0 nS 4

60e

PICCLK Rise Time 0.15 25 nS 4

60f

PICCLK Fall Time 0.15 25 nS 4

60g

PICD0-1 Setup Time 3.0 nS 7 To PICCLK

60h

PICD0-1 Hold Time 2.5 nS 7 To PICCLK

Page 38

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 13. Pentium® Processor 75 and 100 MHz AC Specifications for 50-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

60i

PICD0-1 Valid Delay (LtoH) 4.0 38.0 nS 5 From

PICCLK(28,29)

60j

PICD0-1 Valid Delay (HtoL) 4.0 22.0 nS 5 From

PICCLK(28,29)

PICCLK Setup Time 5.0 nS To CLK (30)

PICCLK Hold Time 2.0 nS To CLK (30)

PICCLK Ratio (CLK/PICCLK) 4 31

Note:

See notes following Table 18.

Page 39

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 14. Pentium® Processor 75 and 100 MHz Dual Processor

Mode AC Specifications for 50 MHz Bus Operation

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

80a

PBREQ#, PBGNT#, PHIT# Flight Time 0 2.0 nS 29

80b

PHITM# Flight Time 0 1.8 nS 29

83a

A5-A31 Setup Time 6.5 nS 7 18, 21, 26

83b

D/C#, W/R#, CACHE#, LOCK#, SCYC Setup Time

6.0 nS 7 18, 21

83c

ADS#, M/IO# Setup Time 8.0 nS 7 18, 21

83d

HIT#, HITM# Setup Time 8.0 nS 7 18, 21

83e

HLDA Setup Time 6.0 nS 7 18, 21

ADS#, D/C#, W/R#, M/IO#, CACHE#, LOCK#, A5-A31, HLDA, HIT#, HITM#, SCYC Hold Time

1.0 nS 7 18, 21

DPEN# Valid Time 10.0 CLKs 18, 19, 23

DPEN# Hold Time 2.0 CLKs 18, 20, 23

APIC ID (BE0#-BE3#) Setup Time 2.0 CLKs 8 To RESET falling

edge(23)

APIC ID (BE0#-BE3#) Hold Time 2.0 CLKs 8 From RESET falling

edge(23)

D/P# Valid Delay 1.0 8.0 nS 5 Primary Processor

Only

Note:

See notes following Table 18.

Page 40

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

3.4.5.2. AC Timing Tables for a 60-MHz Bus

The AC specifications given in Table 15 and Table 16 consist of output delays, input setup requirements and input hold requirements for a 60-MHz external bus. All AC specifications (with the exception of those for the TAP signals and APIC signals) are relative to the rising edge of the CLK input.

Table 15. Pentium

Processor 90, 120 and 150 MHz AC Specifications for 60-MHz Bus Operation

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

Frequency 30.0 60.0 MHz 4

CLK Period 16.67 33.33 nS 4

CLK Period Stability ±250 pS 4 Adjacent Clocks

(1,25)

CLK High Time 4.0 nS 4 2V(1)

CLK Low Time 4.0 nS 4 0.8V(1)

CLK Fall Time 0.15 1.5 nS 4 (2.0V–0.8V)(1,5)

CLK Rise Time 0.15 1.5 nS 4 (0.8V–2.0V)(1,5)

PWT, PCD, CACHE# Valid Delay 1.0 7.0 nS 5

AP Valid Delay 1.0 8.5 nS 5

BE0-7#, LOCK# Valid Delay 0.9 7.0 nS 5

ADS#, ADSC#, D/C#, M/IO#, W/R#, SCYC, Valid Delay

0.8 7.0 nS 5

A3–A16 Valid Delay 0.5 6.3 nS 5

A17–A31 Valid Delay 0.6 6.3 nS 5

ADS#, ADSC#, AP, A3-A31, PWT, PCD, BE0-7#, M/IO#, D/C#, W/R#, CACHE#, SCYC, LOCK# Float Delay

10.0 nS 5 1

APCHK#, IERR#, FERR# Valid Delay 1.0 8.3 nS 5 4

PCHK# Valid Delay 1.0 7.0 nS 5 4

BREQ, HLDA Valid Delay 1.0 8.0 nS 5 4

SMIACT# Valid Delay 1.0 7.6 nS 5

10a

HIT# Valid Delay 1.0 8.0 nS 5

10b

HITM# Valid Delay 0.7 6.0 nS 5

Page 41

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 15. Pentium® Processor 90, 120 and 150 MHz AC Specifications for 60-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

11a

PM0-1, BP0-3 Valid Delay 1.0 10.0 nS 5

11b

PRDY Valid Delay 1.0 8.0 nS 5

D0-D63, DP0-7 Write Data Valid Delay 1.3 7.5 nS 5

D0-D63, DP0-3 Write Data Float Delay 10.0 nS 6 1

A5-A31 Setup Time 6.0 nS 7 26

A5-A31 Hold Time 1.0 nS 7

16a

INV, AP Setup Time 5.0 nS 7

16b

EADS# Setup Time 5.5 nS 7

EADS#, INV, AP Hold Time 1.0 nS 7

18a

KEN# Setup Time 5.0 nS 7

18b

NA#, WB/WT# Setup Time 4.5 nS 7

KEN#, WB/WT#, NA# Hold Time 1.0 nS 7

BRDY#, BRDYC# Setup Time 5.0 nS 7

BRDY#, BRDYC# Hold Time 1.0 nS 7

AHOLD, BOFF# Setup Time 5.5 nS 7

AHOLD, BOFF# Hold Time 1.0 nS 7

BUSCHK#, EWBE#, HOLD, PEN# Setup Time

5.0 nS 7

25a

BUSCHK#, EWBE#, PEN# Hold Time 1.0 nS 7

25b

HOLD Hold Time 1.5 nS 7

A20M#, INTR, STPCLK# Setup Time 5.0 nS 7 12, 16

A20M#, INTR, STPCLK# Hold Time 1.0 nS 7 13

INIT, FLUSH#, NMI, SMI#, IGNNE# Setup Time

5.0 nS 7 12, 16, 17

INIT, FLUSH#, NMI, SMI#, IGNNE# Hold Time

1.0 nS 7 13

INIT, FLUSH#, NMI, SMI#, IGNNE# Pulse Width, Async

2.0 CLKs 15, 17

R/S# Setup Time 5.0 nS 7 12, 16, 17

Page 42

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 15. Pentium® Processor 90, 120 and 150 MHz AC Specifications for 60-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

R/S# Hold Time 1.0 nS 7 13

R/S# Pulse Width, Async. 2.0 CLKs 7 15, 17

D0-D63, DP0-7 Read Data Setup Time 3.0 nS 7

D0-D63, DP0-7 Read Data Hold Time 1.5 nS 8

RESET Setup Time 5.0 nS 8 11, 12, 16

RESET Hold Time 1.0 nS 8 11, 13

RESET Pulse Width, VCC & CLK Stable 15 CLKs 8 11, 17

RESET Active After VCC & CLK Stable 1.0 mS 8 Power up

Reset Configuration Signals (INIT, FLUSH#, FRCMC#) Setup Time

5.0 nS 8 12, 16, 17

Reset Configuration Signals (INIT, FLUSH#, FRCMC#) Hold Time

1.0 nS 8 13

42a

Reset Configuration Signals (INIT, FLUSH#, FRCMC#) Setup Time, Async.

2.0 CLKs 8 To RESET falling edge(16)

42b

Reset Configuration Signals (INIT, FLUSH#, FRCMC#, BRDYC#, BUSCHK#) Hold Time, Async.

2.0 CLKs 8 To RESET falling edge(27)

42c

Reset Configuration Signals (BRDYC#, BUSCHK#) Setup Time, Async.

3.0 CLKs 8 To RESET falling edge(27)

42d

Reset Configuration Signal BRDYC# Hold Time, RESET driven synchronously

1.0 nS To RESET falling edge(1,27)

43a

BF, CPUTYP Setup Time 1.0 mS 8 To RESET falling

edge(22)

43b

BF, CPUTYP Hold Time 2.0 CLKs 8 To RESET falling

edge(22)

43c

APICEN, BE4# Setup Time 2.0 CLKs 8 To RESET falling

edge

43d

APICEN, BE4# Hold Time 2.0 CLKs 8 To RESET falling

edge

TCK Frequency 16.0 MHz 8

TCK Period 62.5 nS 4

TCK High Time 25.0 nS 4 2V(1)

Page 43

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 15. Pentium® Processor 90, 120 and 150 MHz AC Specifications for 60-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

TCK Low Time 25.0 nS 4 0.8V(1)

TCK Fall Time 5.0 nS 4 (2.0V–0.8V)(1,8,9)

TCK Rise Time 5.0 nS 4 (0.8V–2.0V)(1,8,9)

TRST# Pulse Width 40.0 nS 10 Asynchronous(1)

TDI, TMS Setup Time 5.0 nS 9 7

TDI, TMS Hold Time 13.0 nS 9 7

TDO Valid Delay 3.0 20.0 nS 9 8

TDO Float Delay 25.0 nS 9 1, 8

All Non-Test Outputs Valid Delay 3.0 20.0 nS 9 3, 8, 10

All Non-Test Outputs Float Delay 25.0 nS 9 1, 3, 8, 10

All Non-Test Inputs Setup Time 5.0 nS 9 3, 7, 10

All Non-Test Inputs Hold Time 13.0 nS 9 3, 7, 10

APIC AC Specifications

60a

PICCLK Frequency 2.0 16.66 MHz 4

60b

PICCLK Period 60.0 500.0 nS 4

60c

PICCLK High Time 15.0 nS 4

60d

PICCLK Low Time 15.0 nS 4

60e

PICCLK Rise Time 0.15 2.5 nS 4

60f

PICCLK Fall Time 0.15 2.5 nS 4

60g

PICD0-1 Setup Time 3.0 nS 7 To PICCLK

60h

PICD0-1 Hold Time 2.5 nS 7 To PICCLK

60i

PICD0-1 Valid Delay (LtoH) 4.0 38.0 nS 5 From

PICCLK(28,29)

60j

PICD0-1 Valid Delay (HtoL) 4.0 22.0 nS 5 From

PICCLK(28,29)

PICCLK Setup Time 5.0 nS To CLK (30)

PICCLK Hold Time 2.0 nS To CLK (30)

PICCLK Ratio (CLK/PICCLK) 4 31

Note:

See notes following Table 18.

Page 44

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 16. Pentium® Processor 90, 120 and 150 MHz Dual Processor Mode

AC Specifications for 60-MHz Bus Operation

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

80a

PBREQ#, PBGNT#, PHIT# Flight Time 0 2.0 nS 29

80b

PHITM# Flight Time 0 1.8 nS 29

83a

A5-A31 Setup Time 3.9 nS 7 18, 21, 26

83b

D/C#, W/R#, CACHE#, LOCK#, SCYC Setup Time 4.0 nS 7 18, 21

83c

ADS#, M/IO# Setup Time 6.0 nS 7 18, 21

83d

HIT#, HITM# Setup Time 6.0 nS 7 18, 21

83e

HLDA Setup Time 6.0 nS 7 18, 21

ADS#, D/C#, W/R#, M/IO#, CACHE#, LOCK#, A5A31, HLDA, HIT#, HITM#, SCYC Hold Time

1.0 nS 7 18, 21

DPEN# Valid Time 10.0 CLKs 18, 19, 23

DPEN# Hold Time 2.0 CLKs 18, 20, 23

APIC ID (BE0#–BE3#) Setup Time 2.0 CLKs 8 To RESET

falling edge(23)

APIC ID (BE0#-BE3#) Hold Time 2.0 CLKs 8 From RESET

falling edge(23)

D/P# Valid Delay 1.0 8.0 nS 5 Primary

Processor Only

Note:

See notes following Table 18.

3.4.5.3. AC Timing Tables for a 66-MHz Bus

The AC specifications given in Table 17 and Table 18 consist of output delays, input setup requirements and input hold requirements for a 66-MHz external bus. All AC specifications (with the exception of those for the TAP signals and AP IC signals) are relative to the rising edge of the CLK input.

Page 45

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 17. Pentium® Processor 100, 133, 166 and 200 MHz AC Specifications for 66-MHz Bus Operation

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

Frequency 33.33 66.6 MHz

CLK Period 15.0 30.0 nS 4

CLK Period Stability ±250 pS Adjacent Clocks (1,25)

CLK High Time 4.0 nS 4 2V(1)

CLK Low Time 4.0 nS 4 0.8V(1)

CLK Fall Time 0.15 1.5 nS 5 (2.0V–0.8V)(1)

CLK Rise Time 0.15 1.5 nS 4 (0.8V–2.0V)(1)

PWT, PCD, CACHE# Valid Delay 1 .0 7.0 nS 5

AP Valid Delay 1.0 8.5 nS 5

BE0-7#, LOCK# Valid Delay 0.9 7.0 nS 5

ADS# Valid Delay 0.8 6.0 nS 5

ADSC#, D/C#, W/R#, SCYC, Valid Delay 0.8 7.0 nS 5

M/IO# Valid Delay 0.8 5.9 nS 5

A3–A16 Valid Delay 0.5 6.3 nS 5

A17–A31 Valid Delay 0.6 6.3 nS 5

ADS#, ADSC#, AP, A3-A31, PWT, PCD, BE0-7#, M/IO#, D/C#, W/R#, CACHE#, SCYC, LOCK# Float Delay

10.0 nS 6 1

APCHK#, IERR#, FERR# Valid Delay 1.0 8.3 nS 5 4

PCHK# Valid Delay 1.0 7.0 nS 5 4

BREQ Valid Delay 1.0 8.0 nS 5 4

SMIACT# Valid Delay 1.0 7.3 nS 5 4

HLDA Valid Delay 1.0 6.8 nS 5

10a

HIT# Valid Delay 1.0 6.8 nS 5

10b

HITM# Valid Delay 0.7 6.0 nS 5

11a

PM0-1, BP0-3 Valid Delay 1.0 10.0 nS 5

11b

PRDY Valid Delay 1.0 8.0 nS 5

D0-D63, DP0-7 Write Data Valid Delay 1.3 7.5 nS 5

Page 46

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 17. Pentium® Processor 100, 133, 166 and 200 MHz AC Specifications for 66-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

D0-D63, DP0-3 Write Data Float Delay 10.0 nS 6 1

A5-A31 Setup Time 6.0 nS 7 26

A5-A31 Hold Time 1.0 nS 7

16a

INV, AP Setup Time 5.0 nS 7

16b

EADS# Setup Time 5.0 nS 7

EADS#, INV, AP Hold Time 1.0 nS 7

18a

KEN# Setup Time 5.0 nS 7

18b

NA#, WB/WT# Setup Time 4.5 nS 7

KEN#, WB/WT#, NA# Hold Time 1.0 nS 7

BRDY#, BRDYC# Setup Time 5.0 nS 7

BRDY#, BRDYC# Hold Time 1.0 nS 7

AHOLD, BOFF# Setup Time 5.5 nS 7

AHOLD, BOFF# Hold Time 1.0 nS 7

24a

BUSCHK#, EWBE#, HOLD Setup Time 5.0 nS 7

24b

PEN# Setup Time 4.8 nS 7

25a

BUSCHK#, EWBE#, PEN# Hold Time 1.0 nS 7

25b

HOLD Hold Time 1.5 nS 7

A20M#, INTR, STPCLK# Setup Time 5.0 nS 7 12, 16

A20M#, INTR, STPCLK# Hold Time 1.0 nS 7 13

INIT, FLUSH#, NMI, SMI#, IGNNE# Setup Time

5.0 nS 7 12, 16, 17

INIT, FLUSH#, NMI, SMI#, IGNNE# Hold Time

1.0 nS 7 13

Page 47

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 17. Pentium® Processor 100, 133, 166 and 200 MHz AC Specifications for 66-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

INIT, FLUSH#, NMI, SMI#, IGNNE# Pulse Width, Async

2.0 CLKs 15, 17

R/S# Setup Time 5.0 nS 7 12, 16, 17

R/S# Hold Time 1.0 nS 7 13

R/S# Pulse Width, Async. 2.0 CLKs 15, 17

D0-D63, DP0-7 Read Data Setup Time 2.8 nS 7

D0-D63, DP0-7 Read Data Hold Time 1.5 nS 7

RESET Setup Time 5.0 nS 8 11, 12, 16

RESET Hold Time 1.0 nS 8 11, 13

RESET Pulse Width, VCC & CLK Stable 15.0 CLKs 8 11, 17

RESET Active After VCC & CLK Stable 1.0 mS 8 Power up

Reset Configuration Signals (INIT, FLUSH#, FRCMC#) Setup Time

5.0 nS 8 12, 16, 17

Reset Configuration Signals (INIT, FLUSH#, FRCMC#) Hold Time

1.0 nS 8 13

42a

Reset Configuration Signals (INIT, FLUSH#, FRCMC#) Setup Time, Async.

2.0 CLKs 8 To RESET falling edge(16)

42b

Reset Configuration Signals (INIT, FLUSH#, FRCMC#, BRDYC#, BUSCHK#) Hold Time, Async.

2.0 CLKs 8 To RESET falling edge(27)

42c

Reset Configuration Signals (BRDYC#, BUSCHK#) Setup Time, Async.

3.0 CLKs 8 To RESET falling edge(27)

42d

Reset Configuration Signal BRDYC# Hold Time, RESET driven synchronously

1.0 nS To RESET falling edge(1,27)

43a

BF, CPUTYP Setup Time 1.0 mS 8 To RESET falling

edge(22)

Page 48

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 17. Pentium® Processor 100, 133, 166 and 200 MHz AC Specifications for 66-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

43b

BF, CPUTYP Hold Time 2.0 CLKs 8 To RESET falling

edge

(22)

43c

APICEN, BE4# Setup Time 2.0 CLKs 8 To RESET falling edge

43d

APICEN, BE4# Hold Time 2.0 CLKs 8 To RESET falling edge

TCK Frequency 16.0 MHz

TCK Period 62.5 nS 4

TCK High Time 25.0 nS 4 2V(1)

TCK Low Time 25.0 nS 4 0.8V(1)

TCK Fall Time 5.0 nS 4 (2.0V–0.8V)

(1,8,9)

TCK Rise Time 5.0 nS 4 (0.8V–2.0V)(1,8,9)

TRST# Pulse Width 40.0 nS 10 Asynchronous(1)

TDI, TMS Setup Time 5.0 nS 9 7

TDI, TMS Hold Time 13.0 nS 9 7

TDO Valid Delay 3.0 20.0 nS 9 8

TDO Float Delay 25.0 nS 9 1, 8

All Non-Test Outputs Valid Delay 3.0 20.0 nS 9 3, 8, 10

All Non-Test Outputs Float Delay 25.0 nS 9 1, 3, 8, 10

All Non-Test Inputs Setup Time 5.0 nS 9 3, 7, 10

All Non-Test Inputs Hold Time 13.0 nS 9 3, 7, 10

APIC AC Specifications

60a

PICCLK Frequency 2.0 16.66 MHz

60b

PICCLK Period 60.0 500.0 nS 4

60c

PICCLK High Time 15.0 nS 4

60d

PICCLK Low Time 15.0 nS 4

60e

PICCLK Rise Time 0.15 2.5 nS 4

60f

PICCLK Fall Time 0.15 2.5 nS 4

Page 49

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 17. Pentium® Processor 100, 133, 166 and 200 MHz AC Specifications for 66-MHz Bus Operation

(Continued)

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

60g

PICD0-1 Setup Time 3.0 nS 7 To PICCLK

60h

PICD0-1 Hold Time 2.5 nS 7 To PICCLK

60i

PICD0-1 Valid Delay (LtoH) 4.0 38.0 nS 5 From PICCLK(28,29)

60j

PICD0-1 Valid Delay (HtoL) 4.0 22.0 nS 5 From PICCLK(28,29)

PICCLK Setup Time 5.0 nS To CLK (30)

PICCLK Hold Time 2.0 nS To CLK (30)

PICCLK Ratio (CLK/PICCLK) 4 31

Note:

See notes following Table 18.

Page 50

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 18. Pentium® Processor 100, 133, 166 and 200 MHz Dual Processor Mode

AC Specifications for 66-MHz Bus Operation

3.135 < V

< 3.6V, T

CASE

= 0 to 70°C, CL = 0 pF

Symbol Parameter Min Max Unit Figure Notes

80a

PBREQ#, PBGNT#, PHIT# Flight Time 0 2.0 nS 29

80b

PHITM# Flight Time 0 1.8 nS 29

83a

A5-A31 Setup Time 3.7 nS 7 18, 21, 26

83b

D/C#, W/R#, CACHE#, LOCK#, SCYC Setup Time

83c

ADS#, M/IO# Setup Time 5.8 nS 7 18, 21

83d

HIT#, HITM# Setup Time 6.0 nS 7 18, 21

83e

HLDA Setup Time 6.0 nS 7 18, 21

ADS#, D/C#, W/R#, M/IO#, CACHE#, LOCK#, A5-A31, HLDA, HIT#, HITM#, SCYC Hold Time

1.0 nS 7 18, 21

DPEN# Valid Time 10.0 CLKs 18, 19, 23

DPEN# Hold Time 2. 0 CLKs 18, 20, 23

APIC ID (BE0#-BE3#) Setup Time 2.0 CLKs 8 To RESET

falling edge(23)

APIC ID (BE0#-BE3#) Hold Time 2.0 CLKs 8 From RESET

falling edge(23)

D/P# Valid Delay 1.0 8.0 nS 5 Primary

Processor Only

NOTES:

Notes 2, 6, and 14 are general and apply to all standard TTL signals used with the Pentium

processor family.

1. Not 100% tested. Guaranteed by design/characterization.

2. TTL input test waveforms are assumed to be 0 to 3V transitions with 1V/nS rise and fall times.

3. Non-test outputs and inputs are the normal output or input signals (besides TCK, TRST#, TDI, TDO, and TMS). These timings correspond to the response of these signals due to boundary scan operations.

4. APCHK#, FERR#, HLDA, IERR#, LOCK#, and PCHK# are glitch-free outputs. Glitch-free signals monotonically transition without false transitions (i.e., glitches).

5. 0.8V/ns ≤ CLK input rise/fall time ≤ 8V/ns.

6. 0.3V/ns ≤ input rise/fall time ≤ 5V/ns.

7. Referenced to TCK rising edge.

8. Referenced to TCK falling edge.

9. 1 ns can be added to the maximum TCK rise and fall times for every 10 MHz of frequency below 33 MHz.

10. During probe mode operation, do not use the boundary scan timings (t

55-58

Page 51

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

11. FRCMC# should be tied to VCC (high) to ensure proper operation of the Pentium processor 75/90/100/120/133/150/166/200 as a primary processor.

12. Setup time is required to guarantee recognition on a specific clock. Pentium processor 75/90/100/120/133/150/166/200 must meet this specification for dual processor operation for the FLUSH# and RESET signals.

13. Hold time is required to guarantee recognition on a specific clock. Pentium processor 75/90/100/120/133/150/166/200 must meet this specification for dual processor operation for the FLUSH# and RESET signals.

14. All TTL timings are referenced from 1.5V.

15. To guarantee proper asynchronous recognition, the signal must have been de-asserted (inactive) for a minimum of 2 clocks before being returned active and must meet the minimum pulse width.

16. This input may be driven asynchronously. However, when operating two processors in dual processing mode, FLUSH# and RESET must be asserted synchronously to both processors.

17. When driven asynchronously, RESET, NMI, FLUSH#, R/S#, INIT, and SMI# must be de-asserted (inactive) for a minimum of 2 clocks before being returned active.

18. Timings are valid only when dual processor is present.

19. Maximum time DPEN# is valid from rising edge of RESET.

20. Minimum time DPEN# is valid after falling edge of RESET.

21. The D/C#, M/IO#, W/R#, CACHE#, and A5-A31 signals are sampled only on the CLK that ADS# is active.

22. BF and CPUTYP should be strapped to V

or VSS.

23. RESET is synchronous in dual processing mode and functional redundancy checking mode. All signals which have a setup or hold time with respect to a falling or rising edge of RESET in UP mode, should be measured with respect to the first processor clock edge in which RESET is sampled either active or inactive in dual processing and functional redundancy checking modes.

24. The PHIT# and PHITM# signals operate at the core frequency.

25. These signals are measured on the rising edge of adjacent CLKs at 1.5V. To ensure a 1:1 relationship between the amplitude of the input jitter and the internal and external clocks, the jitter frequency spectrum should not have any power spectrum peaking between 500 KHz and 1/3 of the CLK operating frequency. The amount of jitter present must be accounted for as a component of CLK skew between devices.

26. In dual processing mode, timing t

is replaced by t

83a

. Timing t14 is required for external snooping (e.g., address setup to

the CLK in which EADS# is sampled active) in both uniprocessor and dual processor modes.

27. BRDYC# and BUSCHK# are used as reset configuration signals to select buffer size.

28. This assumes an external pullup resistor to V

and a lumped capacitive load. The pullup resistor must be between 300 ohms and 1k ohms, the capacitance must be between 20 pF and 240 pF, and the RC product must be between 3ns and 36ns. V

for PICD0-1 is 0.55V.

29. This is a flight time specification, that includes both flight time and clock skew. The flight time is the time from where the unloaded driver crosses 1.5V (50% of min V

), to where the receiver crosses the 1.5V level (50% of min VCC). See

Figure 11.

30. This is for the Lock Step operation of the component only. This guarantees that APIC interrupts will be recognized on specific clocks to support two processors running in a Lock Step fashion, including FRC mode. FRC on the APIC pins is not supported but mismatches on these pins will result in a mismatch on other pins of the CPU.

31. The CLK to PICCLK ratio for Lock Step operation has to be an integer and the ratio (CLK/PICCLK) cannot be smaller than

* Each valid delay is specified for a 0 pF load. The system designer should use I/O buffer models to account for signal flight

time delays.

Page 52

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

199704

Tv = t5, t49, t60e; Tw = t4, t48, t60f; Tx = t3, t47, t60d Ty = t1, t45, t60b; Tz = t2, t46, t60c

Figure 4. Clock Waveform

Signal

VALID

1.5V

T max.

T min.

241997-5

Tx = t6, t8, t9, t10, t11, t12, t60i, t80, t89

Figure 5. Valid Delay Timings

Page 53

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

199706

Tx = t7, t13; Ty = t6min, t12min

Figure 6. Float Delay Timings

199707

Tx = t14, t16, t18, t20, t22, t24, t26, t28, t31, t34, t60g (to PICCLK),t81, t83 Ty = t15, t17, t19, t21, t23, t25, t27, t29, t32, t35, t60h (to PICCLK), t82, t84

Figure 7. Setup and Hold Timings

Page 54

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

199708

Tt = t40, Tu = t41, Tv = t37, T w =t42, t43a, t43c, t87, Tx = t43b, t43d, t88, Ty = t38, t39, Tz = t36

Figure 8. Reset and Configuration Timings

199709

Tr = t57, Ts = t58, Tu = t54, Tv = t51, Tw = t52, Tx = t53, Ty = t55, Tz = t56

Figure 9. Test Timings

Page 55

PENTIUM® PROCESSO R 75/ 90/ 100/ 120/ 133/ 150/ 166/ 200

199710

Tx = t50

Figure 10. Test Reset Timings

199711

Figure 11. 50% VCC Measurement of Flight Time

Page 56

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

4.0. MECHANICAL SPECIFICATIONS

The Pentium processor 75/90/100/120/133/150/ 166/200 is packaged in 296-pin staggered pin grid array ceramic (SPGA) or plastic (PPGA) pack ages. The pins are arranged in a 37 x 37 matrix and the package dimensions are 1.95" x 1. 95" (Table 19). A

1.25" x 1.25" copper tungs ten heat s preader may be

attached to the top of some of the ceramic packages. This package design with spreader has been

replaced with a package which has no attached spreader. In this s ection, both ceramic ( s preader and non-spreader) as well as plastic packages are shown.

The mechanical specifications for the Pentium processor 75/90/100/120/133/150/166/200 are provided in Tables 20-22. Figures 12-14 show the package dimensions.

Table 19. Package Information Summary for Pentium Processor 75/90/100/120/133/150/166/200

Package Type Total

Pins

Pin Array Package Size

Ceramic Staggered Pin Grid Array SPGA 296 37 x 37 1.95" x 1.95"

4.95 cm x 4.95 cm

Plastic Staggered Pin Grid Array PPGA 296 37 x 37 1.95" x 1.95"

4.95 cm x 4.95 cm

Page 57

PENTIUM® PROCESSO R 75/ 90/ 100/ 120/ 133/ 150/ 166/ 200

∅

BASE PLANE

SEATING PLANE

∅

1.40

REF.

45° CHAMFER (INDEX CORNER)

PIN B2

REF.

2.29

1.52

199712

Figure 12. SPGA Package Dimensions with Heat Spreader

Page 58

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 20. SPGA Package Dimensions with Heat Spreader

Millimeters Inches

Symbol

Min Max Notes Min Max Notes

A 3.59 4.19 Metal Lid 0.141 0.165 Metal Lid

0.38 0.43 Metal Lid 0.015 0.017 Metal Lid

2.62 2.97 0.103 0.117

0.97 1.22 0.038 0.048 B 0.43 0.51 0.017 0.020 D 49.28 49.78 1.940 1.960

45.59 45.85 1.795 1.805

31.50 32.00 1.240 1.260

2.29 2.79 0.090 0.110

L 3.05 3.30 0.120 0.130

N 296 Lead Count 296 Lead Count

1.52 2.54 0.060 0.100

Page 59

PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

∅

A1 A2

SEATING PLANE

1.65

REF.

2.29

1.52

REF.

45° CHAMFER (INDEX CORNER)

PIN C3

Figure 13. SPGA Package Dimensions without Heat Spreader

Page 60

PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 21. SPGA Package Dimensions without Heat Spreader

Millimeters Inches

Symbol

Min Max Notes Min Max Notes

A 2.62 2.97 0.103 0.117

0.69 0.84 Ceramic Lid 0.027 0.033 Ceramic Lid

3.31 3.81 Ceramic Lid 0.130 0.150 Ceramic Lid B 0.43 0.51 0.017 0.020 D 49.28 49.78 1.940 1.960

45.59 45.85 1.795 1.805

2.29 2.79 0.090 0.110

L 3.05 3.30 0.120 0.130

N 296 Lead Count 296 Lead Count

1.52 2.54 0.060 0.100

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Figure 14. PPGA Package Dimensions

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 22. PPGA Package Dimensions

Millimeters Inches

Symbol

Min Max Notes Min Max Notes

A 2.72 3.33 0.107 0.131

1.83 2.23 0.072 0.088

1.00 0.039 B 0.40 0.51 0.016 0.020 D 49.43 49.63 1.946 1.954

45.59 45.85 1.795 1.805

23.44 23.95 0.923 0.943

2.29 2.79 0.090 0.110

17.56 0.692

23.04 0.907

L 3.05 3.30 0.120 0.130

N 296 Lead Count 296 Lead Count

1.52 2.54 0.060 0.100

5.0. THERMAL SPECIFICATIONS

Due to the advanc ed 3.3V BiC MOS proc es s t hat it is produced on, the Pentium processor 75/90/100/120/133/150/166/200 dissipates less power than the Pentium processor 60/66 .

The Pentium processor 75/90/100/120/133/150/ 166/200 is spec ified for proper operation when c ase temperature, T

CASE

, (TC) is within the specified range

of 0°C to 70°C.

5.1. Measuring Thermal Values

To verify that the proper TC (case temperature) is maintained, it should be measured at the center of the package top s urface (opposite of the pins). The measurement is made in the same way with or

without a heat sink attached. When a heat sink is attached, a hole (smaller than 0.150" diameter) should be drilled through the heat sink to allow probing the center of t he pack age. See Figure 15 for an illustration of how to measure T

To minimize the measurement errors, it is recommended to use the following approach:

• Use 36-gauge or finer diameter K, T, or J type thermocouples . The laboratory tes ting was done using a thermocouple made by Omega (part number: 5TC-TTK-36-36).

• Attach the ther mocouple bead or junction to t he center of the package top surface using high thermal conductivity cements. The laboratory testing was done by using Omega Bond (part number: OB-100).

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PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

• The thermocouple should be attached at a 90degree angle as shown in Figure 15.

• The hole size should be smaller than 0.150" in diameter.

5.1.1. THERMAL EQUATIONS AND DATA

For the Pentium processor 75/90/100/120/133/ 150/166/200, an ambient temperature, T

(air temperature around the proc essor), is not specified directly. The only restriction is that T

is met. To

calculate T

values, the f ollowing equations may be

used:

= TC - (P * θCA)

= θJA - θ

where: T

and TC = ambient and case temperature.

(ºC)

= case-to-ambient thermal

resistance. (ºC/Watt)

= junction-to-ambient thermal

resistance. (ºC/Watt)

= junction-to-case thermal

resistance. (ºC/Watt)

P = maximum power consumption

(Watt)

Tables 23-26 list the θ

values for the Pentium processor 75/90/100/120/133/150/166/200 with passive heat sinks. Figures 16-17 show Tables 2324 in graphic format.

199713

Figure 15. Technique for Measuring TC*

*Though the figure shows the package with a heat spreader, the same technique applies to measuring TC of the package without a heat spreader.

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 23. Thermal Resistances for SPGA Packages with Heat Spreader

Heat Sink Height in

Inches

θθ

(°C/Watt)

θθ

(°C/Watt) vs. Laminar Airflow (linear ft/min)

0 100 200 400 600 800

0.25 0.8 8.7 7.6 6.2 4.0 3.2 2.6

0.35 0.8 8.4 7.1 5.6 3.6 2.9 2.4

0.45 0.8 8.0 6.6 4.9 3.2 2.5 2.1

0.55 0.8 7.7 6.1 4.3 2.8 2.2 1.9

0.65 0.8 7.3 5.6 3.9 2.6 2.0 1.7

0.80 0.8 6.6 4.9 3.5 2.2 1.8 1.6

1.00 0.8 5.9 4.2 3.2 2.2 1.7 1.4

1.20 0.8 5.5 3.9 2.9 2.0 1.6 1.4

1.40 0.8 5.0 3.5 2.6 1.8 1.5 1.3

Without Heat Sink 1.3 11.4 10.5 8.7 5.7 4.5 3.8

NOTE:

See notes following Table 26.

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PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Heat Sink Heigh t (in)

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6

0 LFM 100 LFM 200 LFM

400 LFM 600 LFM 800 LFM

Theta (ca)

199714

Figure 16. Thermal Resistance vs. Heatsink Height, SPGA Packages with Heat Spreader

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 24. Thermal Resistances for SPGA Packages without Heat Spreader—

Pentium

Processor 75, 90, 100 and 120 MHz

Heat Sink Height in

Inches

θθ

(°C/Watt)

θθ

(°C/Watt) vs. Laminar Airflow (linear ft/min)

0 100 200 400 600 800

0.25 0.8 9.1 8.0 6.6 4.4 3.6 3.0

0.35 0.8 8.8 7.5 6.0 4.0 3.3 2.8

0.45 0.8 8.4 7.0 5.3 3.6 2.9 2.5

0.55 0.8 8.1 6.5 4.7 3.2 2.6 2.3

0.65 0.8 7.7 6.0 4.3 3.0 2.4 2.1

0.80 0.8 7.0 5.3 3.9 2.8 2.2 2.0

1.00 0.8 6.3 4.6 3.6 2.6 2.1 1.8

1.20 0.8 5.9 4.3 3.3 2.4 2.0 1.8

1.40 0.8 5.4 3.9 3.0 2.2 1.9 1.7

Without Heat Sink 1.3 14.4 13.1 11.7 8.8 7.4 6.5

NOTE:

See notes following Table 26.

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PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

199721

Figure 17. Thermal Resistance vs. Heatsink Height, SPGA Packages without Heat Spreader—

Pentium

Processor 75, 90, 100 and 120 MHz

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Table 25. Thermal Resistances for SPGA Packages without Heat Spreader—

Pentium

Processor 133, 150, 166 and 200 MHz

Heat Sink Height in

Inches

θθ

(°C/Watt)

θθ

(°C/Watt) vs. Laminar Airflow (linear ft/min)

0 100 200 400 600 800

0.25 1.25 9.4 8.3 6.9 4.7 3.9 3.3

0.35 1.25 9.1 7.8 6.3 4.3 3.6 3.1

0.45 1.25 8.7 7.3 5.6 3.9 3.2 2.8

0.55 1.25 8.4 6.8 5.0 3.5 2.9 2.6

0.65 1.25 8.0 6.3 4.6 3.3 2.7 2.4

0.80 1.25 7.3 5.6 4.2 2.9 2.5 2.3

1.00 1.25 6.6 4.9 3.9 2.9 2.4 2.1

1.20 1.25 6.2 4.6 3.6 2.7 2.3 2.1

1.40 1.25 5.7 4.2 3.3 2.5 2.2 2.0

Without Heat Sink 1.7 14.5 13.8 12.6 10.5 8.6 7.5

NOTE:

See notes following Table 26.

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PENTIUM® PROCESSO R 75/ 90/100/120/133/150/ 166/ 200

Table 26. Thermal Resistances for PPGA Packages

Heat Sink Height in

Inches

θθ

(°C/Watt)

θθ

(°C/Watt) vs. Laminar Airflow (linear ft/min)

0 100 200 400 600 800

0.25 0.5 9.0 7.9 6.5 4.3 3.5 2.9

0.35 0.5 8.7 7.4 5.9 3.9 3.2 2.7

0.45 0.5 8.3 6.9 5.2 3.5 2.8 2.4

0.55 0.5 8.0 6.4 4.6 3.1 2.5 2.2

0.65 0.5 7.6 5.9 4.2 2.9 2.3 2.0

0.80 0.5 6.9 5.2 3.8 2.5 2.1 1.9

1.00 0.5 6.2 4.5 3.5 2.5 2.0 1.7

1.20 0.5 5.8 4.2 3.2 2.3 1.9 1.7

1.40 0.5 5.3 3.8 2.9 2.1 1.8 1.6

None 1.3 13.0 12.3 11.4 8.0 6.6 5.7

NOTES:

Heat sinks are omni directional pin aluminum alloy.

Features were based on standard extrusion practices for a given height

Pin size ranged from 50 to 129 mils Pin spacing ranged from 93 to 175 mils Based thickness ranged from 79 to 200 mils

Heat sink attach was 0.005" of thermal grease.

Attach thickness of 0.002" will improve performance approximately 0.3ºC/Watt

6.0. OverDrive® PROCESSOR SOCKET SPECIFICATION

6.1. Introduction

The OverDriv e processors ar e end-user single chip CPU upgrade products for Pent ium proces sor- based systems. The OverDrive processors will speed up most software applications and are binary compatible with the Pentium processor.

6.2. Socket 5

Two upgrade sockets have been defined for the Pentium processor-based systems as part of the processor architecture. Socket 5 has been defined for Pentium processor 75, 90, 100, and 120 MHzbased systems and is defined in the

Pentium

Processor Family Developer’s Manual

, Volume 1. Socket 5 does not s upport upgr adability for 133 MHz or higher processors.

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PENTIUM® PROCESSOR 75/90/100/120/133/150/166/200

Socket 5 supports the following upgrades:

Original

Processor

OverDrive

Processor

Pentium® processor 75 MHz at iCOMP

index 2.0 rating 67

125 MHz

Pentium processor 90 MHz at iCOMP index 2.0 rating 81

150 MHz

Pentium Processor 100 MHz at iCOMP index 2.0 rating 90

166 MHz

Pentium Processor 120 MHz at iCOMP index 2.0 rating 100

180 MHz

NOTE:

1. This is a future OverDrive

upgrade processor.

6.3. Socket 7

Socket 7 has been defined as the upgrade s oc k et f or the Pentium processor 133, 150, 166 and 200 MHz in addition to the Pentium processor 75, 90, 100, and 120 MHz. The flexibility of the Socket 7 definition makes it backward compatible with Socket 5 and should be used for all new Pentium proces sor-bas ed system designs. The Socket 7 support requires minor changes from Socket 5 des igns – an additional key pin, 3.3V clocks, additional supply current, etc. Contact Intel for further information regarding the Socket 7 specifications.

In addition to supporting all of the OverDrive processors for Socket 5, Socket 7 supports the following CPU upgrades:

Original

Processor

Future

OverDrive

Processor

Pentium® processor 75 MHz at iCOMP

index 2.0 rating 67

150 MHz

Pentium processor 90 MHz at iCOMP index 2.0 rating 81

Pentium processor 120 MHz at iCOMP Index 2.0 rating 100

Pentium processor 150 MHz at iCOMP index 2.0 rating 114

180 MHz

Pentium processor 100 MHz at iCOMP index 2.0 rating 90

Pentium processor 133 MHz at iCOMP index 2.0 rating 111

Pentium processor 166 MHz at iCOMP index 2.0 rating 127

200 MHz

Datasheet FV75, FV200, FV166, FV150, FV133 Datasheet (Intel Corporation)

Specifications and Main Features

Frequently Asked Questions

User Manual