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MB84256-10LP IL08
C-MOS 256 K (32,768WORD x 8)-BIT SRAM
—TOP VIEW—
10 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 WE CS OE 27 20 22 D0 D1 D2 D3 D4 D5 D6 D7 11 12 13 15 16 17 18 19
A14 IN 1 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 D0 I/O 11 D1 I/O 12 D2 I/O 13 14 GND
VDD 28 27
9
WE IN
8 7
26 A13 IN 25 A8 IN 24 A9 IN 23 A11 IN 22
6 5 4 3 25 24 21
OE IN CS IN
21 A10 IN 20
23 2 26
19 D7 I/O 18 D6 I/O 17 D5 I/O 16 D4 I/O 15 D3 I/O
1
A0 - A14 D0 - D7 CS OE WE
: : : : :
ADDRESS INPUTS DATA INPUTS/OUTPUTS CHIP SELECT INPUT OUTPUT ENABLE INPUT WRITE ENABLE INPUT
CS 1 0 0 0
OE x 1 0 x
WE x 1 1 0
OUTPUTS HI-Z HI-Z D OUT D IN
FUNCTION NO SELECTION OUTPUT DISABLE READ WRITE
0 1 x HI-Z
: : : :
LOW LEVEL HIGH LEVEL DON’T CARE HIGH IMPEDANCE
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