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Datasheet File OCR Text:

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- TOP VIEW -
C-MOS 2M (256k WX8)-BIT PROM
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ee h
4U t
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12 11 10 9 8 7 6 5 27 26 23 25 4 28 29 3 2 30
UPD27C2001GW (1/2) IL08
1 NC
V DD (+5V) 32 31 CE2/CE2/DC 30 A17 29 A14 28 A13
IN
A16 IN 2 A15 IN 3 A12 IN 4 A7 IN 5 A6 IN 6 A5 IN 7 A4 IN 8 A3 IN 9 A2 IN 10 A1 IN 11 A0 IN 12
IN
IN
27 A8 IN 26 A9 IN 25 A11
IN
22 CE1 IN
O0 O1 O2
OUT
13 14 15 16
OUT
OUT
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21 O7 20 O6 19 O5 18 O4 17 O3
S a
OUT OUT OUT OUT OUT
22
CE1
23 A10
IN
31
24
A0-A17 O0-O7 CE1, 2 OE
; ADDRESS INPUT ; DATA OUTPUT ; CHIP ENABLE ; OUTPUT ENABLE
OE/OE/DC
24 OE/OE/DC
e h
CE2/CE2/DC
U t4 e
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17
.c
m o
O0 O1 O2 O3 O4 O5 O6 O7
13 14 15 17 18 19 20 21
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UPD27C200GW (2/2)
DATA OUTPUTS O0-07
OE/OE/DC CE1 OE2/OE2/DC A0 A1 A2 A3 A4 A5 A10 A6 A7 A8 A9 A11 A12 A13 A14 A15 A16 A17
24 22 32 12 11 10 9 8 7 23 6 5 27 26 25 4 28 29 3 2 30
13 OUTPUT ENABLE PROGRAM VOLTAGE CHIP ENABLE
15 17
21
OUTPUT BUFFERS
Y DECODER
Y GATING
X DECODER
2097152 BITS (1024X2048) MEMORY CELL ARRAY
SYMBOL MODE READ OUTPUT DISABLE STANDBY PAGE DATA LATCH PAGE PROGRAM BYTE PROGRAM PROGRAM VERIFY PROGRAM INHIBIT 1 0 X Hi-Z
CE 0 0 1 1 1 0 0 X X
OE 0 1 X 0 1 1 0 0 1
PGM 1 X X 1 0 1 1 0 1
V PP
V DD
O0-O7 D OUT Hi-Z Hi-Z D IN Hi-Z D IN D OUT Hi-Z
5V
5V
12.5V
6.5V
; HIGH LEVEL ; LOW LEVEL ; 1 (TTL LEVEL HIGH LEVEL) or 0 (TTL LEVEL LOW LEVEL) ; HIGH IMPEDANCE

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