MCM6229BB Datasheet, PDF (1/8 Pages) Motorola, Inc – 256K x 4 Bit Static Random Access Memory

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
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256K x 4 Bit Static Random
Access Memory
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by MCM6229BB/D
MCM6229BB
XJ PACKAGE
400 MIL SOJ
CASE 810–03
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
A
A
A
A
A
ROW
DECODER
MEMORY MATRIX
512 ROWS x
2048 COLUMNS
A
A
A
A
DQ
COLUMN I/O
INPUT
DATA
CONTROL
COLUMN DECODER
DQ
A A AA A A AAA
E
W
G
EJ PACKAGE
300 MIL SOJ
CASE 810B–03
PIN ASSIGNMENTS
A1
A2
A3
A4
A5
A6
A7
A8
A9
A 10
A 11
E 12
G 13
VSS ₁₄
28 ^VCC
27 ^A
26 A
25 A
24 A
23 A
22 A
21 A
20 ^NC*
19 DQ
18 DQ
17 DQ
16 DQ
15 W
PIN NAMES
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.
This document contains information on a new product under development. Motorola reserves the right to change or discontinue this product without notice.
11/7/96
M^© O^MoT^toO^roR^la,O^InL^c.A¹⁹F⁹⁵AST SRAM
MCM6229BB
1