Motorola MCM69L735ZP7R, MCM69L735ZP6.5R, MCM69L735ZP6R, MCM69L735ZP6, MCM69L735ZP7 Datasheet

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

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128K x 36 Bit Data Latch
BurstRAM Synchronous

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MCM69L735

Fast Static RAM

The MCM69L735 is a 4M bit synchronous fast static RAM designed to provide
a burstable, high performance, secondary cache for the PowerPC and other
high performance microprocessors. It is organized as 128K words of 36 bits
each. This device integrates input registers, a 2–bit address counter, and high
speed SRAM onto a single monolithic circuit for reduced parts count in cache
data RAM applications. Synchronous design allows precise cycle control with the
use of an external clock (K).

Addresses (SA), data inputs (DQx), and all control signals except output
enable (G
edge–triggered noninverting registers.

addresses can be generated internally by the MCM69L735 (burst sequence
operates in linear or interleaved mode dependent upon the state of LBO
controlled by the burst address advance (ADV

clock (K) input. This feature eliminates complex off–chip write pulse generation
and provides increased timing flexibility for incoming signals.

nous write enable (SW) are provided to allow writes to either individual bytes or
to all bytes. The four bytes are designated as “a”, “b”, “c”, and “d”. SBa
DQa, SBb
writes SBx
or if all SBx

operate on a 3.3 V or 2.5 V power supply . All inputs and outputs are JEDEC stan­dard JESD8–5 compatible.

• MCM69L735 Speed Options

• 3.3 V + 10%, – 5% Core Power Supply , Operates with a 3.3 V or 2.5 V I/O

• ADSP

• Selectable Burst Sequencing Order (Linear/Interleaved)

• Single–Cycle Deselect Timing

• Internally Self–Timed Write Cycle

• Byte Write and Global Write Control

• PB1 Version 2.0 Compatible

• JEDEC Standard 119–Pin PBGA Package

) and linear burst order (LBO) are clock (K) controlled through positive–

Bursts can be initiated with either ADSP

Write cycles are internally self–timed and are initiated by the rising edge of the

Synchronous byte write (SBx

controls DQb, etc. Individual bytes are written if the selected byte

are asserted with SW. All bytes are written if either SGW is asserted

and SW are asserted.
For read cycles, data is available at the following edge of the clock (K).
The MCM69L735 operates from a 3.3 V core power supply and all outputs

Speed t

150 MHz 6.7 ns 6 ns 0.5 ns 1 ns 400 mA
133 MHz 7.5 ns 6.5 ns 0.5 ns 1 ns 375 mA
117 MHz 8.5 ns 7 ns 0.5 ns 1 ns 350 mA

Supply

, ADSC, and ADV Burst Control Pins

KHKH

), synchronous global write (SGW), and synchro-

t

or ADSC input pins. Subsequent burst

) input pin.

KHQV

Setup Hold I

) and

controls

DD

ZP PACKAGE

PBGA

CASE 999–01

BurstRAM is a trademark of Motorola, Inc.
The PowerPC name is a trademark of IBM Corp., used under license therefrom.

This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.

5/28/97

 Motorola, Inc. 1997

MOTOROLA FAST SRAM

MCM69L735

1

LBO

ADV

K
ADSC
ADSP

SA
SA1
SA0

SGW

FUNCTIONAL BLOCK DIAGRAM

K2

ADDRESS

REGISTER

17

BURST

COUNTER

CLR

2

15

2

17

128K x 36

ARRAY

SW

SBa

SBb

SBc

SBd

SE1
SE2

SE3

WRITE

REGISTER

a

WRITE

REGISTER

b

WRITE

REGISTER

c

WRITE

REGISTER

d

K2

ENABLE

REGISTER

4

REGISTER

K

36

DATA–IN

36

DATA–OUT

LATCH

G

MCM69L735
2

DQa – DQd

MOTOROLA FAST SRAM

PIN ASSIGNMENT

6543217
A
B
C

D
E

F
G

H
J

K
L
M
N
P

R
T

U

SA SA SA SA

V

DDQ

NC SE2 SA ADSC

SA SA SA SA

NC

DQc DQc VSSNC DQb

DQcDQc

V

DQc V

DDQ

DQc

DQc VSSSGW

V

V

V

DD

DDQ

DQd DQd V

DQd V

DDQ

DQdDQd

DQd DQd VSSSA0

SA SA

NC

NC SA SA NC

NC

DDQ

SS
SS

SBcDQcDQc

NCV

SS

SBdDQdDQd

SS
SS

LBO

NCNC

ADSP

SE3

SA

V

DD

V

SS

V

DQbSE1V

SS

DQb

V

G

SS

DQbADV

SBb
V

DQb

SS

V

NCV

DD

KV
NC
SW

DD

SA

NC

V
V
V

SS

SS
SS
SS

NCV

NC

DQa
DQaSBa
DQa
DQaSA1V
DQa

NC

DD

V

V

V

V

V

DDQ

NC

NC
DQb
DQb

DDQ
DQb

DQb

DDQ
DQa

DQa

DDQ
DQa

DQa

NC

NC
DDQ

TOP VIEW 119 BUMP PBGA

Not to Scale

MOTOROLA FAST SRAM

MCM69L735

3

PBGA PIN DESCRIPTIONS

Pin Locations Symbol

4B ADSC Input Synchronous Address Status Controller: Active low, interrupts any

4A ADSP Input Synchronous Address Status Processor: Active low, interrupts any

4G ADV Input Synchronous Address Advance: Increments address count in

(a) 6K, 7K, 6L, 7L, 6M, 6N, 7N, 6P, 7P

(b) 6D, 7D, 6E, 7E, 6F, 6G, 7G, 6H, 7H

(c) 1D, 2D, 1E, 2E, 2F, 1G, 2G, 1H, 2H

(d) 1K, 2K, 1L, 2L, 2M, 1N, 2N, 1P, 2P

4F G Input Asynchronous Output Enable Input:

4K K Input Clock: This signal registers the address, data in, and all control signals

3R LBO Input Linear Burst Order Input: This pin must remain in steady state (this

2A, 3A, 5A, 6A, 3B, 5B, 2C, 3C,

5C, 6C, 2R, 6R, 3T, 4T, 5T

4N, 4P SA1, SA0 Input Synchronous Address Inputs: These pins must be wired to the two

5L, 5G, 3G, 3L
(a) (b) (c) (d)

4E SE1 Input Synchronous Chip Enable: Active low to enable chip.

2B SE2 Input Synchronous Chip Enable: Active high for depth expansion.
6B SE3 Input Synchronous Chip Enable: Active low for depth expansion.
4H SGW Input Synchronous Global Write: This signal writes all bytes regardless of the

4M SW Input Synchronous Write: This signal writes only those bytes that have been

4C, 2J, 4J, 6J, 4R V

1A, 7A, 1F, 7F, 1J, 7J, 1M, 7M, 1U, 7U V

3D, 5D, 3E, 5E, 3F, 5F, 3H, 5H,
3K, 5K, 3M, 5M, 3N, 5N, 3P, 5P

1B, 7B, 1C, 7C, 4D, 3J, 5J, 4L, 1R, 5R,

7R, 1T, 2T, 6T, 7T, 2U, 3U, 4U, 5U, 6U

Type Description

ongoing burst and latches a new external address. Used to initiate a
READ, WRITE, or chip deselect.

ongoing burst and latches a new external address used to initiate a new
READ or chip deselect (exception — chip deselect does not occur
when ADSP

accordance with counter type selected (linear/interleaved).

DQx I/O Synchronous Data I/O: “x” refers to the byte being read or written

SA Input Synchronous Address Inputs: These inputs are registered and must

SBx Input Synchronous Byte Write Inputs: “x” refers to the byte being written (byte

DD

DDQ

V

SS

NC — No Connection: There is no connection to the chip.

Supply Core Power Supply.
Supply I/O Power Supply.
Supply Ground.

(byte a, b, c, d).

Low — enables output buffers (DQx pins).
High — DQx pins are high impedance.

except G

signal not registered or latched). It must be tied high or low.
Low — linear burst counter (68K/PowerPC).
High — interleaved burst counter (486/i960/Pentium).

meet setup and hold times.

LSBs of the address bus for proper burst operation. These inputs are
registered and must meet setup and hold times.

a, b, c, d). SGW

Negated high — blocks ADSP
asserted.

status of the SBx
being used, tie this pin high.

selected using the byte write SBx
are being used, tie this pin low.

is asserted and SE1 is high).

and LBO.

overrides SBx.

or deselects chip when ADSC is

and SW signals. If only byte write signals SBx are

pins. If only byte write signals SBx

MCM69L735
4

MOTOROLA FAST SRAM

TRUTH TABLE (See Notes 1 Through 5)

Address

Next Cycle

Deselect None 1 X X X 0 X X High–Z X
Deselect None 0 X 1 0 X X X High–Z X
Deselect None 0 0 X 0 X X X High–Z X
Deselect None X X 1 1 0 X X High–Z X
Deselect None X 0 X 1 0 X X High–Z X
Begin Read External 0 1 0 0 X X X High–Z X
Begin Read External 0 1 0 1 0 X X High–Z READ
Continue Read Next X X X 1 1 0 1 High–Z READ
Continue Read Next X X X 1 1 0 0 DQ READ
Continue Read Next 1 X X X 1 0 1 High–Z READ
Continue Read Next 1 X X X 1 0 0 DQ READ
Suspend Read Current X X X 1 1 1 1 High–Z READ
Suspend Read Current X X X 1 1 1 0 DQ READ
Suspend Read Current 1 X X X 1 1 1 High–Z READ
Suspend Read Current 1 X X X 1 1 0 DQ READ
Begin Write External 0 1 0 1 0 X X High–Z WRITE
Continue Write Next X X X 1 1 0 X High–Z WRITE
Continue Write Next 1 X X X 1 0 X High–Z WRITE
Suspend Write Current X X X 1 1 1 X High–Z WRITE
Suspend Write Current 1 X X X 1 1 X High–Z WRITE

NOTES:

1. X = don’t care. 1 = logic high. 0 = logic low.

2. Write is defined as either 1) any SBx

3. G

is an asynchronous signal and is not sampled by the clock K. G drives the bus immediately (t

4. On write cycles that follow read cycles, G
also remain negated at the completion of the write cycle to ensure proper write data hold times.

5. This read assumes the RAM was previously deselected.

LINEAR BURST ADDRESS TABLE (LBO = V

1st Address (External) 2nd Address (Internal) 3rd Address (Internal) 4th Address (Internal)

X . . . X00 X . . . X01 X . . . X10 X . . . X11
X . . . X01 X . . . X10 X . . . X11 X . . . X00
X . . . X10 X . . . X11 X . . . X00 X . . . X01
X . . . X11 X . . . X00 X . . . X01 X . . . X10

INTERLEAVED BURST ADDRESS TABLE (LBO = V

1st Address (External)

X . . . X00 X . . . X01 X . . . X10 X . . . X11
X . . . X01 X . . . X00 X . . . X11 X . . . X10
X . . . X10 X . . . X11 X . . . X00 X . . . X01
X . . . X11 X . . . X10 X . . . X01 X . . . X00

Used

SE1 SE2 SE3 ADSP ADSC ADV G

and SW low or 2) SGW is low.

must be negated prior to the start of the write cycle to ensure proper write data setup times. G must

)

SS

)

DD

2nd Address (Internal) 3rd Address (Internal) 4th Address (Internal)

3

DQx Write 2,

) following G going low.

GLQX

WRITE TRUTH TABLE

Cycle Type SGW SW SBa SBb SBc SBd

Read H H X X X X
Read H L H H H H
Write Byte a H L L H H H
Write Byte b H L H L H H
Write Byte c H L L H L H
Write Byte d H L H L H L
Write All Bytes H L L L L L
Write All Bytes L X X X X X

4

5

5

MOTOROLA FAST SRAM

MCM69L735

5