Yamaha KB-180 Servicehandleiding - Pagina 14

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Yamaha KB-180 Servicehandleiding
KB-180/SKB-180

LSI PIN DESCRIPTION

NT3881DFG-01 (X3148A00) LCD DRIVER ..................................................................14
ML9040A-B01GAZ03A (XZ987A00) LCD DRIVER......................................................14
ADC084S021CIMM (X6905A00) ADC (Analog to Digital Converter) ............................14
YMW767-VTZ (X6055A00) CPU (SWL01T)..................................................................15
AK4385ET (X6040A00) DAC (Digital to Analog Converter) ..........................................16
NT3881DFG-01 (X3148A00) LCD DRIVER
ML9040A-B01GAZ03A (XZ987A00) LCD DRIVER
PIN
NAME
I/O
NO.
1
S22
O
2
S21
O
3
S20
O
4
S19
O
5
S18
O
6
S17
O
7
S16
O
8
S15
O
9
S14
O
10
S13
O
11
S12
O
12
S11
O
13
S10
O
14
S9
O
15
S8
O
16
S7
O
17
S6
O
18
S5
O
19
S4
O
20
S3
O
21
S2
O
22
S1
O
23
GND
24
OSC1
I
25
OSC2
O
26
V1
27
V2
28
V3
29
V4
30
V5
31
L
O
32
CP
O
33
Vdd
34
DF
O
35
DO
O
36
RS
I
37
R/W
I
38
E
I
39
DB0
I/O
40
DB1
I/O
ADC084S021CIMM (X6905A00) ADC (Analog to Digital Converter)
PIN
NAME
I/O
NO.
1
CS
I
2
VA
-
3
GND
-
4
AIN4
I/O
5
AIN3
I/O
14
FUNCTION
Segment signal output for LCD
driving
Ground
Oscillator
Oscillator
Power supply
Data latch clock
Data shift clock
Power supply (+5 V)
Altamated signal for LCD driver output
Display data interface
Read/write
Enable
Data interface
Data interface
FUNCTION
Chip select
Power supply +3.3 V
Ground
Analog input
PIN
NAME
I/O
NO.
41
DB2
I/O
42
DB3
I/O
43
DB4
I/O
Data interface
44
DB5
I/O
45
DB6
I/O
46
DB7
I/O
47
C1
O
48
C2
O
49
C3
O
50
C4
O
51
C5
O
52
C6
O
53
C7
O
54
C8
O
Common signal output for LCD
55
C9
O
driving
56
C10
O
57
C11
O
58
C12
O
59
C13
O
60
C14
O
61
C15
O
62
C16
O
63
S40
O
64
S39
O
65
S38
O
66
S37
O
67
S36
O
68
S35
O
69
S34
O
70
S33
O
71
S32
O
Segment signal output for LCD
72
S31
O
driving
73
S30
O
74
S29
O
75
S28
O
76
S27
O
77
S26
O
78
S25
O
79
S24
O
80
S23
O
PIN
NAME
I/O
NO.
6
AIN2
I/O
Analog input
7
AIN1
I/O
8
DIN
I
Digital data input
9
DOUT
O
Digital data output
10
SCLK
I
Digital clock input
DMLCD: IC601
FUNCTION
DMLCD: IC801
FUNCTION