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Part: MB8422-90LP
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Datasheet: Download MB8422-90LP datasheet File size : 413 kB
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Datasheet text preview:
********** C-MOS 16K (2048X8)-BIT DUAL PORT STATIC RAM
-TOP VIEW2 1 5
B842290LP (1/2) IL00
WSL C B
IN
EL O N
I USYL UT A
1 2 3 4 5 6 7 8 9 1 10 11 12 13 14
( DD V +5V)
48 S 47 W R IN 46 B ER N 45 AUSYR OUT 44 O10R
I IN 7 6 8 9 1 10 11 12 13 14
WEL CSL OEL A0L A1L A2L A3L A4L A5L A6L A7L A8L A9L A 10L 42 IN IN IN IN IN IN I/O I/O I/O I/O I/O I/O I/O /O 41 30 39 25 26 27 28 39 30 31 2 45 USYL 3 B D0L D1L D2L D3L D4L D5L D6L 7L 16 17 18 29 20 21 22 3
OOL 1 A EL AL O A1L A2L A3L A4L A5L A6L A7L A8L
IN IN IN IN IN IN IN IN IN IN IN
43 A ER IN 42 A0R 41 A1R 30 A2R 39 A3R 38 A4R 37 A5R 36 A6R 35 A7R 34 A8R 33 D9R 32 D7R 31 D6R 20 D5R 29 D4R 28 D3R 27 D2R D 26 C1R 5 0R
IN IN IN IN
4 5
A0R A1R A2R A3R A4R A5R A6R A7R A8R A9R 10R B
D0R D1R D2R D3R D4R D5R D6R 7R
38 37 36 35 34 43 4
D 9L I N 15 D L I/O 16 O D1L I/O 17 D2L I/O 18 D3L I/O 29 D4L I/O 20 D5L I/O 21 D6L I/O 22 7L
/O
USYR
WER CSR OER 46 47 43
23 4 GND
LEFT PORT AOLA10L ; ADDRESS INPUTS B UCYL ; BUSY OUTPUT S D SL ; CHIP SELECT INPUT OLO 7L ; DATA INPUTS/OUTPUTS D WEL ; OUTPUT ENABLE INPUT EL ; WRITE ENABLE INPUT
IGHT PORT AORA10R ; ADDRESS INPUTS B UCYR ; BUSY OUTPUT S D SR ; CHIP SELECT INPUT ORO 7R ; DATA INPUTS/OUTPUTS D WER ; OUTPUT ENABLE INPUT ER ; WRITE ENABLE INPUT M R
MB842290LP (2/2)
WEL CSL OEL 2 1 5 46 47 43 WER CSR OER
D0L D1L D2L D3L D4L D5L D6L A 7L
16 17 18 29 20 21 22 4 3
25 D0R 26 D1R
B I/O UFFER
B I/O UFFER
27 D2R 28 D3R 39 D4R 30 D5R 31 D6R 42 A 7R 34
A0L 1 A9L A8L A7L
1 15 14 3
A10R A9R A8R A7R
D ROW ECODER
D ROW ECODER
33 34 5
A6L A5L A4L A3L A2L A1L B 0L
12 11 9 0 8 7 6
36 A6R 37 A5R
D OLUMN C ECODER
M 2048X8BIT A MORY E RRAY
D OLUMN C ECODER
38 A4R 49 A3R 40 A2R 41 A1R 2 B 0R
10
10
ARBITRATION INTERRUPT CIRCUIT
3 USYL
45 USYR
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