MCM6729C

1

MOTOROLA FAST SRAM

256K x 4 Bit Fast Static Random

Access Memory

The MCM6729C is a 1,048,576 bit static random access memory organized

as 262,144 words of 4 bits. Static design eliminates the need for external clocks

or timing strobes.

Output enable (G) is a special control feature that provides increased system

flexibility and eliminates bus contention problems.

This device meets JEDEC standards for functionality and revolutionary pinout,

and is available in a 400 mil plastic small–outline J–leaded package.

• Single 5 V ± 10% Power Supply

• Fully Static — No Clock or Timing Strobes Necessary

• All Inputs and Outputs Are TTL Compatible

• Three State Outputs

• Fast Access Times: 6, 7 ns

• Center Power and I/O Pins for Reduced Noise

BLOCK DIAGRAM

ROW

DECODER

MEMORY

MATRIX

512 ROWS x 512 x 4

COLUMNS

INPUT

DATA

CONTROL

COLUMN I/O

COLUMN DECODER

A

A

A

A

A

A

A

A

DQ

AA

A

A

A

E

W

VCC

VSS

A

A

A

A

DQ

G

A

Order this document

by MCM6729C/D

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

PIN ASSIGNMENT

MCM6729C

WJ PACKAGE

400 MIL SOJ

CASE 857A–01

32

31

30

29

28

27

26

25

24

23

22

21

2

3

1

5

6

4

7

9

10

8

12

13

11

14

20

15

16

19

18

17

A

A

A

A

E

A

W

A

A

A

VCC

A

A

A

A

DQ

A

G

DQ

A

A

A

A

VSS

VCC

VSS

DQ

DQ

NC

A

NC

NC

A

Address Input

. . . . . . . . . . . . . . . . . . . . .

E

Chip Enable

. . . . . . . . . . . . . . . . . . . . . .

W

Write Enable

. . . . . . . . . . . . . . . . . . . .

G

Output Enable

. . . . . . . . . . . . . . . . . . .

DQ

Data Input/Output

. . . . . . . . . . . . . . .

VCC

+ 5 V Power Supply

. . . . . . . . . . . .

VSS

Ground

. . . . . . . . . . . . . . . . . . . . . . .

NC

No Connection

. . . . . . . . . . . . . . . . . .

PIN NAMES

REV 3

10/9/96