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Details, datasheet, quote on part number:UPD43256B
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Datasheet text preview:
UPD43256BGX-B12-EJA(1/2) IL16
C-MOS 256k (32kx8) BIT STATIC RAM
TOP VIEW
OE A11 A 9 A8 A13 W E A 14 A12 A7 A6 A5 A 4 A3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
NC
NC
VDD (+2.7 to 5.5V) GND
C
N
NC
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
A10 CS I /O8 I/O7 I/O6 I/O5 /O4 I I/O3 /O2 I/O1 A0 A 1 A2
A0-14 ; ADDRESS INPUTS I/O1-18 ; DATA INPUTS/OUTPUTS CS ; CHIP SELECT INPUT WE ; WRITE ENABLE INPUT OE ; OUTPUT ENABLE INPUT
20 18 17 16 15 13 12 11 5 4 32 2 10 6 9
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 CS 31 OE 1
I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 I/O8
21 22 23 25 26 27 28 29
WE 7
UPD43256BGX-B12-EJA(2/2)
A5 5 A9 A11 4 A14 ADDRESS 9 BUFFER DECODER ROW MEMORY CELL ARRAY 262144BIT (512 X 64 X 8)
I/O1 I/O8
INPUT DATA CONTROL
SENS/SWITCH COLUMN DECODER
OUTPUT DATA CONTROL
6 ADDRESS BUFFER 5 A0A4 CS 31 A10
1 OE
WE
7
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