Datasheet Summary
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- UPD424400LA-80L(1/2) IL08
C-MOS 4M (1,048,576WORDx4)-BIT DYNAMIC RAM
9 10 11 12 14 15 16 17 18 5
I/O1 1 I/O2 2 WE IN 3 RAS IN 4 A9 IN 5
GND 26 25 I/O4 24 I/O3 23 CAS
22 OE IN
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9
1 I/O1 2 I/O2 24 I/O3 25 I/O4
A0 IN 9 A1 IN 10 A2 IN 11 A3 IN 12 13 V DD (+5V)
18 A8 17 A7 16 A6 15 A5 14 A4
IN IN IN IN IN
A0-A9 CAS I/O1-I/O4 OE RAS WE
; ADDRESS INPUTS ; COLUMN ADDRESS STROBE INPUT ; DATA INPUTS/OUTPUTS ; OUTPUT ENABLE INPUT ; ROW ADDRESS STROBE INPUT ; WRITE ENABLE INPUT w w w t a .D
S a e h
U 4 t e
23 CAS 4 RAS
.c
WE 3 m o
OE 22 w w w
.D a t a e h S
4 t e
U m o .c
CAS DATA OUTPUT BUFFER CAS BEFORE...