MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document by MCM6949/D
Advance Information
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
MCM6949
YJ PACKAGE 400 MIL SOJ CASE 857A±02
PIN NAMES
A0 ± A19 . . . . . . . . . . . . . . . . Address Inputs
W . . . . . . . . . . . . . . . . . . . . . . . Write Enable
G . . . . . . . . . . . . . . . . . . . . . . Output Enable
E . . . . . . . . . . . . . . . . . . . . . . . . . Chip Enable
DQ . . . . . . . . . . . . . . . . . . Data Input/Output
NC . . . . . . . . . . . . . . . . . . . . . No Connection
VCC . . . . . . . . . . . . . . + 3.3 V Power Supply
VSS . . . . . . . . . . . . . . . . . . . . . . . . . . Ground
This document contains information on a new product. Specifications and information herein are subject to change without notice.
REV 4 4/2/98
Motorola, Inc. 1998 |
MCM6949 |
MOTOROLA FAST SRAM |
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1 |
BLOCK DIAGRAM
A
A
A
A
A
ROW
MEMORY MATRIX
A DECODER
A
A
A
A
DQ |
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COLUMN I/O |
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INPUT |
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COLUMN DECODER |
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DATA |
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CONTROL |
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DQ |
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A |
A |
A |
A |
A |
A |
A |
A |
A |
A |
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DQ |
E |
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W |
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DQ |
G |
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MCM6949 |
MOTOROLA FAST SRAM |
2 |
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PIN ASSIGNMENT
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A |
1 |
32 |
A |
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A |
2 |
31 |
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A |
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A |
3 |
30 |
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A |
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A |
4 |
29 |
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A |
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A |
5 |
28 |
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A |
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6 |
27 |
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E |
G |
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DQ |
7 |
26 |
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DQ |
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VCC |
8 |
25 |
VSS |
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VSS |
9 |
24 |
VCC |
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DQ |
10 |
23 |
DQ |
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11 |
22 |
A |
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W |
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A |
12 |
21 |
A |
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A |
13 |
20 |
A |
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A |
14 |
19 |
A |
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A |
15 |
18 |
A |
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A |
16 |
17 |
NC |
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MOTOROLA FAST SRAM |
MCM6949 |
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3 |