CMOS 256K SRAM
M628032-20E1 (1/2) IL08D
C-MOS 256 K (32,768 x 8)-BIT SRAM
—TOP VIEW—
10 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 ...
Description
M628032-20E1 (1/2) IL08D
C-MOS 256 K (32,768 x 8)-BIT SRAM
—TOP VIEW—
10 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 E G W DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 11 12 13 15 16 17 18 19
A14
IN
1
VDD 28 27 W IN 26 A13 IN 25 A8 IN 24 A9 IN 23 A11 IN 22 G IN 21 A10 IN 20 E IN 19 DQ7 IN/OUT 18 DQ6 IN/OUT 17 DQ5 IN/OUT 16 DQ4 IN/OUT GND 15 DQ3 IN/OUT
9 8
A12 IN 2 A7 IN 3 A6 IN 4 A5 IN 5 A4 IN 6 A3 IN 7 A2 IN 8 A1 IN 9 A0 IN 10
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7 6 5 4 3 25 24 21 23 2 26 1
20 22 27
DQ0 IN/OUT 11 DQ1 IN/OUT 12 DQ2 IN/OUT 13 14
A0 - A14 ; ADDRESS INPUTS DQ0 - DQ7 ; DATA INPUTS/OUTPUTS ; CHIP ENABLE E ; OUTPUT ENABLE G ; WRITE ENABLE W
MODE READ READ WRITE DESELECT
E 0 0 0 1
G 1 1 0 X
W 1 0 X X
DQ0-DQ7 HI-Z D OUT D IN HI-Z
POWER ACTIVE ACTIVE ACTIVE STANDBY
1 0 X HI-Z
; ; ; ;
HIGH LEVEL LOW LEVEL DON’T CARE HIGH IMPEDANCE
M628032-20E1 (2/2)
28 14 (7) A6 C.E.
A0
VDD GND
ROW DECODER
MEMORY ARRAY
DQ0 DATA INPUTS/ OUTPUTS DQ7 C.E. CHIP ENABLE (8)
INPUT DATA CTRL
I/O CIRCUITS COLUMN DECODER
(8) A7 A14
W E G
27 20 22
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...
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