Pioneer FH-M8047ES, Service Manual

Page: 79 / 90

FH-M8047ZT/XN/ES
79
5 6 7 8
5 6
7
8
C
D
F
A
B
E
Pin No. Pin Name I/O Function and Operation
1-63
64
65
LCD segment signal output
66-73
LCD common signal output
74
COM1-COM8
75
Key scan output
76-79
KS2/P2 Key scan output
80-84
KS3-KS6 Key scan output
95
KI1-KI5 Key scan input
OSCI Not used
92 VSS
85
86 VDD Power supply
VLCD Power supply for LCD driver
99
100
CL Synchronizing clock input
DI Chip enable input
I
I
96 Chip operation inhibit input
inh
I
97 DO Data output O
93 TEST GND I
87
88 VLCD0 LCD drive bias impressed voltage (4/4) output
89
VLCD1 LCD drive bias impressed voltage (3/4) input
90
VLCD2 LCD drive bias impressed voltage (2/4) input
91
VLCD3 LCD drive bias impressed voltage (1/4) input
VLCD4 LCD drive bias impressed voltage (0/4) input
O
I
I
I
I
O
O
O
O O
O
O
I
O
I
94 OSCO Not used O
98 CE Chip enable input I
GND
S1-S63
LCD segment / common signal output S64/COM10
LCD segment / common signal output S65/COM9
KS1/P1
-
Pin Functions (LC75816WS-8722)
* LC75816WS-8722
25
26
50
51 75
76
100
1
S-80835CNNB-B8U
1
3
2
S1
R S2 GND
BUS- BUS+
VCC STB
4
5 6
7
8
BIAS
DRIVER
OUTPUT
+
-
-
+
COM
RECEIVER
OUTPUT
HA12240FP
VREF
+
1 2
4 3
OUT VDD
NC VSS