|
Details, datasheet, quote on part number:HM514400BS7-GS
| |
Datasheet text preview:
********** C-MOS 4M (1,048,576 X 4)-BIT DYNAMIC RAM
-TOP VIEW-
HM514400BS7-GS (1/2) IL22
7 6
I/O 1 2 V I/O 2 3 WE IN 4
1
GND 20 I 1 19 /O 4 18 I/O 3 17 CS IN 16 OE IN 15 A8 IN
8 9 1 11 12 13 14 55
A0 A1 A2 A3 A4 A5 A6 A7 A8 O9
I
1
/O 1 I/O 2 I/O 3 I/O 4
2 1 18 9
RAS IN 5 A9 IN 6 A0 IN 7 A1 IN 8 A2 IN 9 A3 IN 1 0
DD (+5V)
1
16
14 A7 IN 13 A6 IN 12 A5 IN 1 A4 IN
37 4
CE W S RE A AS
A INPUT C0A8 OS RE WS A IE
; ADDRESS CHIP SELECT OUTPUT ENABLE ROW ADDRESS STROBE WRITE ENABLE
; ; ; ; ; I NPUT/OUTPUT /O1I/O4 DATA
HM514400BS7-GS (2/2)
5-9, 11-15 A ROW B DRESS D UFFER ROW DECODER P & EC IPHERAL R IRCUIT
A0-A9
M 256K DROW EMORY RIVER A RRAY MATRIX I/O BUS C& D OLUMN ECODER 1, 2, 18, 19 I/O1-I/O4
BUFFER
M 256K DROW EMORY RIVER A RRAY MATRIX A OLUMN C B DRESS D UFFER I/O BUS C& D OLUMN ECODER
OE C WS RE AS
16 37 4 CONTROL C IRCUIT
|
|
