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Details, datasheet, quote on part number:HM51W4400TT6-8
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Datasheet text preview:
********** C-MOS 1M×4-BIT DYNAMIC RAM
-TOP VIEW7 6 A0 A1 A2 A3 A4 A5 A6 A7 C8
HM51W4400TT6-8 (1/2) IL22
I/O1 I/O 1 V 2 I/O2 I/O 3 WE IN 4 RAS IN 5 A9 IN 6 A 0 IN 7 A1 IN 8 A2 IN 9 A3 IN 1 0
DD (+3.3V)
GND 20 I 1 19 /O4 I/O 18 I/O3 I/O 17 CAS IN 16 OE IN A 15 8 IN
8 9 1 11 12 13 14 15
I
1
I/O1 I/O2 I/O3 /O4
2 1 18 9
14 A7 IN 13 A6 IN 12 A5 IN 1 A4 IN A INPUT A0-A9 C0-A9 I AS R 1-IO4 O OAS WE E ; ; ; ; ; ; ;
47 1 36
RAS OAS WE E
ADDRESS INPUTS REFRESH ADDRESS INPUTS COLUMN ADDRESS STROBE INPUT DATA INPUTS/OUTPUTS ROW ADDRESS STROBE INPUT OUTPUT ENABLE INPUT READ/WRITE ENABLE INPUT
RAS 4
RAS CONTROL CIRCUIT
256 K MEMORY ARRAY MAT I/O1 BUFFER I/O BUS & COLUMN DECODER 256 K MEMORY ARRAY MAT 256 K MEMORY ARRAY MAT I/O BUS & COLUMN DECODER 256 K MEMORY ARRAY MAT DROW RIVER DROW RIVER 256 K MEMORY ARRAY MAT I/O BUS & COLUMN DECODER DROW RIVER DROW RIVER 256 K MEMORY ARRAY MAT DROW RIVER DROW RIVER 256 K MEMORY ARRAY MAT I/O BUS & COLUMN DECODER
DROW RIVER DROW RIVER 256 K MEMORY ARRAY MAT
CAS 17
CAS CONTROL CIRCUIT
ROW ADDRESS BUFFER I/O2 BUFFER
WE 3
WE CONTROL CIRCUIT
ADDRESS
ROW DECODER & PERIPHERAL CIRCUIT
A0-A9 256 K MEMORY ARRAY MAT I/O BUS & COLUMN DECODER 256 K MEMORY ARRAY MAT 256 K MEMORY ARRAY MAT I/O BUS & COLUMN DECODER 256 K MEMORY ARRAY MAT DROW RIVER DROW RIVER DROW RIVER DROW RIVER DROW RIVER DROW RIVER DROW RIVER DROW RIVER
6-9, 11-15
OE 16
OE CONTROL CIRCUIT
256 K MEMORY ARRAY MAT I/O BUS & COLUMN DECODER 256 K MEMORY ARRAY MAT 256 K MEMORY ARRAY MAT
I/O3 BUFFER
I/O1 1 I/O2 2
COLUMN ADDRESS BUFFER
I/O3 I/O4 18 19
I/O4 BUFFER
I/O BUS & COLUMN DECODER 256 K MEMORY ARRAY MAT
HM51W4400TT6-8 (2/2)
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