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Details, datasheet, quote on part number:HM514402BZ-8
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Datasheet text preview:
C ********** -MOS 4M (1,048,576 x 4)-BIT DYNAMIC RAM
--SIDE VIEW--
HM514402BZ-8 (1/2) IL08
1
2
3
I / O3
4
I / O4
5
6
I / O1
7
I / O2
8
9
10 11
A9 IN A0 IN
12
A1 IN
13 14
A2 IN A3 IN
15 16 17
A4 IN A5 IN
VDD(+5V)
GND
18 19 20
A6 IN A7 IN A8 IN
11 12 13 14 16 17 18 29 10 1 0
A0 A1 A2 A3 A4 A5 A6 A7 A8 O9
I/O1 I/O2 I/O3 /O4
7 6 3 4
A INPUT 0 - A9 OS C RE WS A IE
; ADDRESS ; CHIP SELECT ; OUTPUT ENABLE ; ROW ADDRESS STROBE ; READ/WRITE ENABLE ; INPUT/OUTPUT DATA /O1 - I/O4
2 8 9
CE W S RE AS
RAS IN
CS IN
WE IN
OE IN
HM514402BZ-8 (2/2) ROW DECODER P & EC IPHERAL R IRCUIT M 256K A MORY E MRRAY ATRIX I/O BUS C& D OLUMN ECODER
6, 7, 3, 4
11 - 20, 10 A0 - A9
A ROW B DRESS D UFFER
DROW RIVER
BUFFER
I/O1 - I/O4
DROW RIVER
M 256K A MORY E MRRAY ATRIX I/O BUS C& D OLUMN ECODER
A OLUMN C B DRESS D UFFER
OE CS WE RAS
1 2 8 9
CONTROL C IRCUIT
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