MCM72F8•MCM72F9
1
MOTOROLA FAST SRAM
2MB and 4MB Synchronous Fast
Static RAM Module
The MCM72F8 (2MB) is configured as 256K x 72 bits and the MCM72F9 (4MB)
is configured as 512K x 72 bits. Both are packaged in a 168–pin dual–in–line
memory module DIMM. Each module uses Motorola’s 3.3 V 256K x 18 bit
flow–through BurstRAMs.
Address (A), data inputs (DQ, DP), and all control signals except output enable
(G
) are clock (K) controlled through positive–edge–triggered noninverting
registers.
Write cycles are internally self–timed and initiated by the rising edge of the
clock (K) input. This feature provides increased timing flexibility for incoming
signals. Synchronous byte write (W
) allows writes to either individual bytes or to
both bytes.
• Single 3.3 V + 10%, – 5% Power Supply
• Plug and Pin Compatibility with 2MB and 4MB
• Multiple Clock Pins for Reduced Loading
• All Inputs and Outputs are LVTTL Compatible
• Byte Write Capability
• Fast SRAM Access Times: 8/9/12 ns
• Decoupling Capacitors for Each Fast Static RAM
• High Quality Multi–Layer FR4 PWB With Separate Power and Ground
Planes
• Amp Connector, Part Number: 390064–4
• 168–Pin DIMM Module
Order this document
by MCM72F8/D
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MCM72F8
MCM72F9
168–LEAD DIMM
CASE 1115J–01
TOP VIEW
84
41
40
1
11
REV 3
11/26/97
Motorola, Inc. 1997
MCM72F8•MCM72F9
4
MOTOROLA FAST SRAM
PIN ASSIGNMENT
168–LEAD DIMM
TOP VIEW
125
126
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83
84
DQ18
V
SS
DQ16
DQ15
V
SS
DQ13
DQ11
V
SS
DQ9
DP0
V
DD
DQ6
DQ4
V
SS
DQ2
DQ0
V
SS
NC
A17
V
SS
A15
A13
V
DD
A11
A9
V
SS
A7
A5
V
SS
A3
A1
ADSP
V
SS
K0
V
SS
W6
W4
V
SS
W2
W0
V
DD
G0
E0
V
SS
DQ19
V
SS
DQ17
DP1
V
DD
DQ14
DQ12
V
SS
DQ10
DQ8
V
SS
DQ7
DQ5
V
SS
DQ3
DQ1
V
DD
NC
NC
V
SS
A16
A14
V
SS
A12
A10
V
SS
A8
A6
V
DD
A4
A2
A0
V
SS
K1
V
SS
W7
W5
V
SS
W3
W1
V
SS
G1
E1
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
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20
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40
85
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111
112
113
114
115
116
117
118
119
120
121
122
123
124
V
SS
DP7
DQ61
V
SS
DQ59
DQ57
V
SS
DP6
DQ54
V
DD
DQ52
DQ50
V
SS
DQ48
DQ47
V
SS
DQ45
DQ43
V
SS
DQ41
DP4
V
DD
DQ38
DQ36
V
SS
DQ34
DQ32
V
SS
K2
V
SS
DQ31
DQ29
V
SS
DQ27
DQ25
V
SS
DP2
DQ22
V
DD
DQ20
V
SS
DQ63
DQ62
V
DD
DQ60
DQ58
V
SS
DQ56
DQ55
V
SS
DQ53
DQ51
V
SS
DQ49
DP5
V
DD
DQ46
DQ44
V
SS
DQ42
DQ40
V
SS
DQ39
DQ37
V
SS
DQ35
DQ33
V
SS
K3
V
SS
DP3
DQ30
V
DD
DQ28
DQ26
V
SS
DQ24
DQ23
V
SS
DQ21