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by MCM32515/D
SEMICONDUCTOR TECHNICAL DATA
MCM32515
Advance Information
512K x 32 Bit
PIN ASSIGNMENT
TOP VIEW
Fast Static RAM Module
The MCM32515 is a 16M bit static random access memory module organized
as 524,288 words of 32 bits. The module is offered in a 72–lead single in–line
memory module (SIMM). Four MCM6246 fast static RAMs, packaged in 36–lead
SOJpackagesaremountedonaprintedcircuitboardalongwitheightdecoupling
capacitors.
The MCM6246 is a high–performance CMOS fast static RAM organized as
524,288 words of 8 bits. Static design eliminates the need for external clocks or
timing strobes, while CMOS circuitry reduces power consumption and provides
for greater reliability.
The MCM32515 is equipped with output enable (G) and four separate byte en-
able (E1 – E4) inputs, allowing for greater system flexibility. The G input, when
high, will force the outputs to high impedance. Ex high will do the same for byte x.
72 LEAD SIMM — CASE TBD
1
3
NC
2
4
6
NC
PD2
PD3
V
5
SS
PD0
DQ0
DQ1
7
PD1
DQ8
8
9
10
11
13
15
17
19
21
23
25
27
29
31
DQ9
DQ10
DQ11
A0
12
DQ2
DQ3
14
16
18
V
CC
A7
A1
20
22
24
26
28
A8
A9
A2
•
•
•
•
•
•
•
•
•
Single 5 V ± 10% Power Supply
Fast Access Times: 20/25 ns
Three–State Outputs
Fully TTL Compatible
DQ12
DQ13
DQ14
DQ15
DQ4
DQ5
DQ6
JEDEC Standard Pinout
DQ7
W
30
32
Power Requirement: 800/740 mA Maximum, Active AC
High Board Density SIMM Package
Byte Operation: Four Separate Chip Enables, One for Each Byte
High Quality Six–Layer FR4 PWB with Separate Internal Power and
Ground Planes
V
SS
33
35
A15
E2
A14
E1
34
36
•
Incorporates Motorola’s State–of–the–Art Fast Static RAMs
37
39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
E4
E3
38
40
42
A17
G
A16
V
SS
DQ24
DQ25
DQ26
DQ27
A3
PIN NAMES
DQ16
DQ17
DQ18
44
46
48
A0 – A18 . . . . . . . . . . . . . . . . . . . . . . . . . . . Address Inputs
W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Write Enable
G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output Enable
E1 – E4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Byte Enables
DQ0 – DQ31 . . . . . . . . . . . . . . . . . . . . . . Data Input/Output
DQ19
A10
50
52
54
V
V
. . . . . . . . . . . . . . . . . . . . . . . . . . . + 5 V Power Supply
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ground
A4
CC
SS
A11
A5
A12
A13
56
58
60
62
64
PD0 – PD3 . . . . . . . . . . . . . . . . . . . . . . . . Package Density
NC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No Connect
V
CC
A6
For proper operation of the device, V mustbeconnected
SS
to ground.
DQ20
DQ21
DQ22
DQ28
DQ29
DQ30
DQ31
A18
DQ23
66
68
V
SS
69
71
NC
NC
70
72
NC
This document contains information on a new product. Specifications and information herein are subject to change without notice.
REV 2
4/7/97
Motorola, Inc. 1997
MOTOROLA FAST SRAM
MCM32515
1