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MCM6229BBEJ20R2 bảng dữ liệu(PDF) 1 Page - Motorola, Inc

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MCM6229BB
1
MOTOROLA FAST SRAM
Product Preview
256K x 4 Bit Static Random
Access Memory
The MCM6229BB 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 while CMOS circuitry reduces power consumption and provides
for greater reliability.
The MCM6229BB is equipped with both chip enable (E) and output enable (G)
pins, allowing for greater system flexibility and eliminating bus contention problems.
The MCM6229BB is available in 300 mil and 400 mil, 28 lead surface–mount
SOJ packages.
• Single 5 V ± 10% Power Supply
• Fast Access Times: 15/17/20/25/35 ns
• Equal Address and Chip Enable Access Times
• All Inputs and Outputs are TTL Compatible and LVTTL Compatible
• Three State Outputs
• Low Power Operation: 155/150/135/130/110 mA Maximum, Active AC
BLOCK DIAGRAM
MEMORY MATRIX
512 ROWS x
2048 COLUMNS
ROW
DECODER
INPUT
DATA
CONTROL
DQ
DQ
COLUMN I/O
COLUMN DECODER
A
A
A
A
A
A
A
A
E
W
G
A
A
A
A
A
A
A
A
A
A
This document contains information on a new product under development. Motorola reserves the right to change or discontinue this product without notice.
Order this document
by MCM6229BB/D
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
PIN ASSIGNMENTS
MCM6229BB
PIN NAMES
XJ PACKAGE
400 MIL SOJ
CASE 810–03
19
18
17
16
15
28
27
26
25
24
23
22
21
20
A
A
A
A
A
A
A
A
A
A
A
E
G
VSS
VCC
A
A
A
A
A
A
NC*
DQ
DQ
DQ
DQ
A
10
11
12
13
14
1
2
3
4
5
6
7
8
9
W
A
Address Inputs
. . . . . . . . . . . . . . . . . . . .
W
Write Enable
. . . . . . . . . . . . . . . . . . . . .
G
Output Enable
. . . . . . . . . . . . . . . . . . .
E
Chip Enable
. . . . . . . . . . . . . . . . . . . . . .
DQ
Data Inputs/Outputs
. . . . . . . . . . . . .
VCC
+ 5 V Power Supply
. . . . . . . . . . . . .
VSS
Ground
. . . . . . . . . . . . . . . . . . . . . . .
NC*
No Connection
. . . . . . . . . . . . . . . . .
*If not used for no connect, then do not ex-
ceed voltages of – 0.5 to VCC + 0.5 V.
This pin is used for manufacturing diag-
nostics.
EJ PACKAGE
300 MIL SOJ
CASE 810B–03
11/7/96
© Motorola, Inc. 1995


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