Samsung SCR-3232, Service Manual

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23 33
•
DAP 202K
1 2
3
•
2SB 1132 (KTA 1664)
-TOP VIEW-
1 2 3
A12 NC A14
3 1 31
15 17 19
A7 A15 VCC A13
O2 NC O4
O1 GND O3 O5
4 2 32 30
14 16 18 20
5
6
7
8
9
10
11
12
13
29
A6
A5
A4
A3
A2
A1
A0
NC
O0
A8
A9
A11
NC
OE/VPP
A10
CE
O7
O6
28
27
26
25
24
23
22
21
PLCC Top View
Pin Name Function
A0-A15 Addresses
O0-O7 Outputs
CE Chip Enable
OE/Vpp Output Enable/Vpp
NC No Connect
•
AT27PC512
•
TC4S66F
OE, CE AND
PROGRAM LOGIC
OUTPUT
BUFFERS
DATA OUTPUTS
O0-O7
Y-GATING
CELL MATRIX
IDENTIFICATION
Y DECODER
X DECODER
A0-A15
ADDRESS
INPUTS
CE
OE/VPP
GND
Vcc
Mode/Pin CE OE/V
PP
Ai Outputs
Read V
IL
V
IL
Ai D
OUT
Output Disable V
IL
V
IH
X (1) High Z
Standby V
IH
X (1) X High Z
Pid Program (2) V
IL
V
PP
Ai D
IN
GM Inhibit V
IH
V
PP
X (1) High Z
Duct Identification (4) V
IL
V
IL
A9=V
H
(3) IdentificationCode
A0=V
IH
or V
IL
A1-A15=V
IL
IN/OUT 1 5
4
OUT/IN
2
V
SS
V
CONT
DD
3
V
IN/OUT
DD
OUT/IN
V
CONTROL
SS