MCM6949
1
MOTOROLA FAST SRAM
1M x 4 Bit Static Random
Access Memory
The MCM6949 is a 4,194,304–bit static random access memory organized as
1,048,576 words of 4 bits. Static design eliminates the need for external clocks
or timing strobes.
The MCM6949 is equipped with chip enable (E
) and output enable (G) pins,
allowing for greater system flexibility and eliminating bus contention problems.
Either input, when high, will force the outputs into high impedance.
The MCM6949 is available in a 400 mil, 32–lead surface–mount SOJ package.
• Single 3.3 V – 5%, + 10% Power Supply
• Fast Access Time: 8/10/12/15 ns
• Equal Address and Chip Enable Access Time
• All Inputs and Outputs are TTL Compatible
• Three–State Outputs
• Power Operation: 195/165/160/155 mA Maximum, Active AC
Order this document
by MCM6949/D
SEMICONDUCTOR TECHNICAL DATA
MCM6949
A0 – A19 Address Inputs. . . . . . . . . . . . . . . .
W
Write Enable. . . . . . . . . . . . . . . . . . . . . . .
G
Output Enable. . . . . . . . . . . . . . . . . . . . . .
E
Chip Enable. . . . . . . . . . . . . . . . . . . . . . . . .
DQ Data Input/Output. . . . . . . . . . . . . . . . . .
NC No Connection. . . . . . . . . . . . . . . . . . . . .
V
DD
+ 3.3 V Power Supply. . . . . . . . . . . . . .
V
SS
Ground. . . . . . . . . . . . . . . . . . . . . . . . . .
PIN NAMES
YJ PACKAGE
400 MIL SOJ
CASE 857A–02
REV 9
5/20/99
 Motorola, Inc. 1999
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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MCM6949
2
MOTOROLA FAST SRAM
BLOCK DIAGRAM
G
AA AAAAAAAA
MEMORY MATRIX
ROW
DECODER
INPUT
DATA
CONTROL
A
A
A
A
A
A
A
A
DQ
DQ
E
W
A
A
COLUMN I/O
COLUMN DECODER
DQ
DQ
PIN ASSIGNMENT
A
A
A
A
E
A
W
A
A
A
V
DD
A
A
A
A
DQ
A
G
DQ
A
A
A
A
V
SS
V
DD
V
SS
DQ
DQ
AA
ANC
20
21
22
23
24
25
26
19
27
28
32
31
30
29
5
4
3
2
1
10
9
8
7
6
11
12
13
14
15
16
18
17
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc
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