The MCM64PC32T (256K) and MCM64PC64T (512K) are designed to provide a burstable, high performance, L2 cache for the Pentium microprocessor in
conjunction with Intel’s Triton II chip set. The MCM64PC32T is configured as 32K
x 64 bits and the MCM64PC64T is configured as 64K x 64 bits. Both are packaged in a 160 pin card edge memory module. Each module uses Motorola’s 3.3
V 32K x 32 BurstRAMs and one Motorola 3.3 V 32K x 8 FSRAM for the tag RAM.
Bursts can be initiated with either address status processor (ADSP
address status (CADS
the BurstRAM by the cache burst advance (CADV
Write cycles are internally self timed and are initiated by the rising edge of the
clock (CLK0) input. Eight write enables are provided for byte write control.
PD0 – PD3 map into the Triton II chip set for auto–configuration of the cache
control.
• Pentium–Style Burst Counter on Chip
• Pipelined Data Out
• 160 Pin Card Edge Module
• Address Pipeline Supported by ADSP
• All Cache Data and Tag I/Os are TTL Compatible
• Three State Outputs
• Byte Write Capability
• Fast Module Clock Rate: 66 MHz
• Fast SRAM Access Times:15 ns for Tag RAM
• 1.5 Cycle Deselect Data RAMs
• Decoupling Capacitors for Each Fast Static RAM
• High Quality Multi–Layer FR4 PWB with Separate Power and Ground
Planes
• Single 3.3 V +10%, – 5% Power Supply
• Burndy Connector, Part Number: CELP2X80SC3Z48
• Intel COAST 3.0 Option III Compliant
• Burst Order Select (BOSEL) Option
). Subsequent burst addresses are generated internal to
) input pin.
Disabled with Ex
8 ns for Data RAMs
) or cache
160–LEAD CARD EDGE
CASE TBD, TOP VIEW
1
42
43
80
BurstRAM is a trademark of Motorola.
Pentium is a trademark of Intel Corp.
This document contains information on a new product. Specifications and information herein are subject to change without notice.
must meet setup and hold times for the low–to–high transition of clock (CLK0/1).
ASYNCHRONOUS TRUTH TABLE (See Notes 1 and 2)
Operation
ReadLData Out
ReadHHigh–Z
WriteXHigh–Z — Data In
DeselectedXHigh–Z
NOTES:
1. X means Don’t Care.
2. For a write operation following a read operation, G
required setup time and held high through the input data hold time.
CGI/O Status
must be high before the input data
DC ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to V
RatingSymbolValueUnit
Power Supply VoltageVDD3– 0.5 to + 4.6V
Voltage Relative to V
Output Current (per I/O)I
Temperature Under BiasT
Operating TemperatureT
Storage TemperatureT
NOTE: Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are
exceeded. Functional operation should be restricted to RECOMMENDED OPERATING CONDITIONS. Exposure to higher than recommended voltages for
extended periods of time could affect device reliability.
SS
Vin, V
out
bias
stg
outVSS
J
– 0.5 to VDD3 + 0.5V
± 20mA
– 10 to + 85°C
20 to +110°C
– 55 to + 125°C
SS
= 0 V)
This device contains circuitry to protect the
inputs against damage due to high static voltages or electric fields; however, it is advised
that normal precautions be taken to avoid
application of any voltage higher than maximum rated voltages to this high–impedance
circuit.
This BiCMOS memory circuit has been
designed to meet the dc and ac specifications
shown in the tables, after thermal equilibrium
has been established.
This device contains circuitry that will
ensure the output devices are in High–Z at
power up.
MCM64PC32T•MCM64PC64T
6
MOTOROLA FAST SRAM
Page 7
DC OPERA TING CONDITIONS AND CHARACTERISTICS
(VDD = 3.3 V + 10%, – 5%, TJ = 20 to + 1 10 °C, Unless Otherwise Noted)
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage (Operating Voltage Range)V
Input High VoltageV
Input Low VoltageV
NOTES:
1. JEDEC specification 8–1A specifies ± 0.3 V tolerance for VDD.
2. VIH (max) = VDD + 0.3 V dc; VIH (max) = VDD + 1.4 V ac (pulse width ≤ 20 ns) for I ≤ 20.0 mA.
3. VIL (min) = – 0.5 V dc; VIL (min) = – 2.0 V ac (pulse width ≤ 20 ns) for I ≤ 20.0 mA.
(Voltages referenced to VSS = 0 V)
SymbolMinMaxUnitNotes
DD
IH
IL
DC CHARACTERISTICS
ParameterSymbolMinMaxUnitNotes
Input Leakage Current (All Inputs, Vin = 0 to VDD3)I
Output Leakage Current (CG = VIH)I
TTL Output Low Voltage (IOL = + 8.0 mA)V
TTL Output High Voltage (IOH = – 4.0 mA)V
NOTES:
1. Champing diodes exist to VSS and VDD.
lkg(I)
lkg(O)
OL
OH
POWER SUPPLY CURRENTS
ParameterSymbolMaxUnit
AC Supply Current (CG = VIH, CCS = VIL, I
VIL = 0.0 V and VIH ≥ 3.0 V, Cycle Time ≥ t
AC Standby Current (CG = VIH, CCS = VIL, I
VIL = 0.0 V and VIH ≥ 3.0 V, Cycle Time ≥ t
= 0 mA, All Inputs = VIL or VIH,MCM64PC32T
out
min)MCM64PC64T
KHKH
= 0 mA, All Inputs = VIL or VIH,MCM64PC32T
out
min)MCM64PC64T
KHKH
3.1353.6V1
2.0VDD + 0.3V2
– 0.50.8V3
—± 1.0µA
—± 1.0µA
—0.4V1
2.4—V1
I
DDA
I
SB1
495
705
230
505
mA
mA
CAPACITANCE (f = 1.0 MHz, dV = 3.0 V, T
Input CapacitanceMCM64PC32T
Input/Output Capacitance (DQ0 – DQ63)MCM64PC32T
= 20 to 110°C, Periodically Sampled Rather Than 100% Tested)
J
ParameterSymbolMaxUnit
MCM64PC64T
MCM64PC64T
C
in
C
I/O
21
31
16
pF
8
pF
MOTOROLA FAST SRAM
MCM64PC32T•MCM64PC64T
7
Page 8
DAT A RAMs AC OPERATING CONDITIONS AND CHARACTERISTICS
(VDD = 3.3 V + 10%, – 5% TJ = 20 to + 1 10 °C, Unless Otherwise Noted)
Figure 1. Unloaded Rise and Fall time Characterization
MCM64PC32T•MCM64PC64T
8
MOTOROLA FAST SRAM
Page 9
DATA RAMs READ/WRITE CYCLE TIMING (See Notes 1, 2, and 3)
MCM64PC32T–66
MCM64PC32T–66
ParameterSymbolMinMaxUnitNotes
Cycle Timet
Clock Access Timet
Output Enable to Output Validt
Clock High to Output Activet
Clock High to Output Changet
Output Enable to Output Activet
Output Disable to Q High–Zt
Clock High to Q High–Zt
Clock High Pulse Widtht
Clock Low Pulse Widtht
Setup Times:Address
Hold Times:Address
NOTES:
1. Write applies to all SBx
2. Chip Enable applies to all SE1
3. All read and write cycle timings are referenced from K or G
4. G
is a don’t care after write cycle begins. To prevent bus contention, G should be negated prior to start of write cycle.
5. Tested per AC Test Load.
6. Measured at
7. This parameter is sampled and is not 100% tested.
± 200 mV from steady state. Tested per High–Z Test Load.
, SW, and SGW signals when the chip is selected and ADSP high.
, SE2 and SE3 signals whenever ADSP or ADSC is asserted.
Address Status
Data In
Write
Address Advance
Chip Enable
Address Status
Data In
Write
Address Advance
Chip Enable
.
KHKH
KHQV
GLQV
KHQX1
KHQX2
GLQX
GHQZ
KHQZ
KHKL
KLKH
t
AVKH
t
ADSVKH
t
DVKH
t
WVKH
t
ADVVKH
t
EVKH
t
KHAX
t
KHADSX
t
KHDX
t
KHWX
t
KHADVX
t
KHEX
15—ns
—8ns5
—6ns5
0—ns5, 7
2—ns5, 7
0—ns5, 7
—8ns6, 7
28ns6, 7
5—ns
5—ns
2.5—ns4
0.5—ns4
MOTOROLA FAST SRAM
MCM64PC32T•MCM64PC64T
9
Page 10
PULL–UP
3.6
VOLTAGE (V)
– 0.5
0
1.4
1.65
2
3.135
3.6
NOTES:
1. Driver impedance @ 1.65 V = 15.9 to 44.6 Ω.
2. Meets the temperature and voltage range specified in DC Characteristics tables.
3. This drawing is not to scale. Comparisons should be made to the table in Figure 2a.
I (mA) MinI (mA) Max
– 40
– 40
– 40
– 37
– 28
0
0
– 120
– 120
– 120
– 104
– 81
– 20
0
3.135
2.8
DC DRIVE
POINT
1.65
VOLTAGE (V)VOLTAGE (V)
1.4
AC DRIVE
POINT
0
– 5
0– 40– 120
2a. Pull–Up
VOLTAGE (V)
– 0.5
0
0.5
1
1.65
1.8
3.6
4
PULL–DOWN
I (mA) MinI (mA) Max
– 34
0
17
35
45
46
46
46
– 126
0
47
90
114
120
120
120
V
DD
1.8
1.65
DC DRIVE
POINT
0.3
AC DRIVE
POINT
TEST POINT
– 80
CURRENT (mA)
TEST POINT
0
5
046120
NOTES:
1. Driver impedance @ 1.65 V = 15.9 to 44.6 Ω.
2. Meets the temperature and voltage range specified in DC Characteristics tables.
3. This drawing is not to scale. Comparisons should be made to the table in Figure 2b.
2b. Pull–Down
Figure 2. Output Buffer Characteristics
80
CURRENT (mA)
MCM64PC32T•MCM64PC64T
10
MOTOROLA FAST SRAM
Page 11
KHQV
t
GLQX
t
BURST WRITE
CD
ESC1 IGNORED
ADSP, Ax
DATA RAMs READ/WRITE CYCLES
KLKH
t
KHKL
t
KHKH
t
AB
Ax
ADSP
CADS
CADV
CCS
ESC1
Q(B)D(C)D(C+1)D(C+2)D(C+3)Q(D)
GHQZ
t
Q(B+2)Q(B+3)
BURST WRAPS AROUND
KHQX2
Q(B)Q(B+1)
t
KHQV
t
Q(A)
KHQX1
t
Q(n–1)
KLQZ
t
W
CG
KHQZ
t
DQx
BURST READSINGLE READ
DESELECTEDSINGLE READ
Note: W low = GWE low and/or BWE and CWEx low.
CLK0, CLK1
MOTOROLA FAST SRAM
(ADDRESS)
MCM64PC32T•MCM64PC64T
11
Page 12
T AG RAM AC OPERATING CONDITIONS AND CHARACTERISTICS
(VDD = 3.3 V ± 0.3 V, TJ = 20 to + 110°C, Unless Otherwise Noted)
Read Cycle Timet
Address Access Timet
Output Hold from Address Changet
NOTES:
1. CWE
is high for read cycle.
2. Device is continuously selected (CG
3. All timings are referenced from the last valid address to the first address transition.
4. Transition is measured ±500 mV from steady–state voltage with load of Figure 3b.
5. This parameter is sampled and not 100% tested.
= VIL).
TAG RAM READ CYCLE (See Note 5)
t
AVAV
Ax (ADDRESS)
t
AXQX
AVAV
AVQV
AXQX
–15
15—ns3
—15ns
4—ns4, 5
Q (DATA OUT)
OUTPUT
t
AVQV
Z0 = 50
Ω
OUTPUT
50
Ω
VL = 1.5 V
351
Ω
(a)(b)
Figure 3. T est Loads
3.3 V
317
5 pF
DATA VALIDPREVIOUS DATA VALID
TIMING LIMITS
Ω
The table of timing values shows either a
minimum or a maximum limit for each parameter. Input requirements are specified from
the external system point of view. Thus, address setup time is shown as a minimum
since the system must supply at least that
much time. On the other hand, responses
from the memory are specified from the device point of view. Thus, the access time is
shown as a maximum since the device never
provides data later than that time.
MCM64PC32T•MCM64PC64T
12
MOTOROLA FAST SRAM
Page 13
TAG RAM WRITE CYCLE (See Notes 1 and 2)
ParameterSymbolMinMaxUnitNotes
Write Cycle Timet
Address Setup Timet
Address Valid to End of W ritet
Data Valid to End of W ritet
Data Hold Timet
Write Low to Output High–Zt
Write High to Output Activet
Write Recovery Timet
NOTES:
1. A write occurs when CWE
2. If CG
goes low coincident with or after CWE goes low, the output will remain in a high impedance state.
3. All timings are referenced from the last valid address to the first address transition.
4. If CG
≥ VIH, the output will remain in a high impedance state.
5. At any given voltage and temperature, t
6. Transition is measured ± 500 mV from steady–state voltage with load of Figure 3b.
7. This parameter is sampled and not 100% tested.
is low.
(max) is less than t
WLQZ
(min), both for a given device and from device to device.
WHQX
TAG RAM WRITE CYCLE (See Notes 1 and 2)
AVAV
AVWL
AVWH
DVWH
WHDX
WLQZ
WHQX
WHAX
–15
15—ns3
0—ns
12—ns
7—ns
0—ns
07ns5,6,7
4—ns5,6,7
0—ns
AX (ADDRESS)
TWE
D (DATA IN)
Q (DATA OUT)
HIGH Z
t
AVWL
t
WLQZ
t
AVAV
t
AVWH
t
WLWH
t
DVWH
DATA VALID
HIGH Z
t
WHAX
t
WHDX
t
WHQX
MOTOROLA FAST SRAM
MCM64PC32T•MCM64PC64T
13
Page 14
ORDERING INFORMATION
(Order by Full Part Number)
64PC32T
MCM64PC64T XXXX
Motorola Memory Prefix
Part Number
Full Part Number —MCM64PC32TSG66MCM64PC64TSG66
Speed (66 = 66 MHz)
Package (SG = Gold Pad SIMM)
MCM64PC32T•MCM64PC64T
14
MOTOROLA FAST SRAM
Page 15
P ACKAGE DIMENSIONS
CARD EDGE MODULE
A
COMPONENT
AREA
B
8043 421
MIN .285 inches,
MAX .305 inches
160–LEAD
CASE TBD
E
C
NOTE 4
P
V
NOTE 4
–Y–
VIEW
AA
2X
F
L
AC
–X–
M
FRONT VIEW
160X
D
0.004 (0.1)X
R
W
R
156X
L
H160X
160X
K
S
Y
T
G
(N)
VIEW AA
160123 12281
COMPONENT
AREA
BACK VIEW
NOTE: Case Outline number to be determined.
AB
NOTE 5
–T–
J NOTE 6
0.012 (0.3)
SIDE VIEW
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. CARD THICKNESS APPLIES ACROSS TABS AND
INCLUDES PLATING AND/OR METALLIZATION.
4. DIMENSIONS C AND V DEFINE A
DOUBLE–SIDED MODULE.
5. DIMENSION AB DEFINES OPTIONAL
SINGLE–SIDED MODULE.
W0.0400.0601.021.52
AB–––0.262–––6.66
AC 0.0720.0761.831.93
MILLIMETERSINCHES
M
MOTOROLA FAST SRAM
MCM64PC32T•MCM64PC64T
15
Page 16
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
Mfax is a trademark of Motorola, Inc.
How to reach us:
USA/EUROPE /Locations Not Listed: Motorola Literature Distribution;JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,
P .O. Box 5405, Denver, Colorado, 80217. 303–675–2140 or 1–800–441–24473–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 81–3–3521–8315
Mfax: RMFAX0@email.sps.mot.com — TOUCHTONE 602–244–6609ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
INTERNET: http://Design–NET.com51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
MCM64PC32T•MCM64PC64T16
◊
MOTOROLA FASTSRAM
MCM64PC32T/D
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