Yamaha PORTATONE PSR-170 Service Manual page 11

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S6A0069X10-Q0RJ (XV226A00) LCD DRIVER
PIN
NAME I/O
NO.
1 S22 O
2 S21 O
S20
3 O
4 S19 O
5 S18 O
6 S17 O
S16
7 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
S5 O
18
19 S4 O
20 S3 O
21 S2 O
S1 O
22
23 Vss
24 OSC1
25 OSC2 O
V1
26
27 V2
28 V3
29 V4
V5
30
31 CLK1 O
32 CLK2 O
33 Vdd
34 M O
35 D O
36 RS
37 R/W
38 E
39 DB0 I/O
40 DB1 I/O
IC BLOCK DIAGRAM
µPC4570G2 (XF291A00)
Dual Operational Amplifier
DM-LCD : IC004
Output A
1
Inverting
2
Input A
-
Non-Inverting
3
Input A
-DC Voltage Supply
4 -V
FUNCTION
Segment signal output for LCD
driving
Ground
I Oscillator
Oscillator
Power supply
Data latch clock
Data shift clock
Power supply (+5 V)
Altamated signal for LCD driver outout
Display data interface
I
I Read/write
I Enable
Data interface
Data interface
+DC Voltage
+V 8
Supply
Output B
7
+
Inverting
6
+ -
Input B
Non-Inverting
5
Input B
Digitized in Heiloo the Netherlands
PIN
NAME I/O
NO.
41 DB2 I/O
42 DB3 I/O
DB4
43 I/O
44 DB5 I/O
45 DB6 I/O
46 DB7 I/O
C1
47 O
48 C2 O
49 C3 O
50 C4 O
C5
51 O
52 C6 O
53 C7 O
54 C8 O
55 C9 O
56 C10 O
57 C11 O
C12 O
58
59 C13 O
60 C14 O
61 C15 O
C16 O
62
63 S40 O
64 S39 O
65 S38 O
S37
66 O
67 S36 O
68 S35 O
69 S34 O
S33
70 O
71 S32 O
72 S31 O
73 S30 O
74 S29 O
75 S28 O
76 S27 O
77 S26 O
78 S25 O
79 S24 O
80 S23 O
BA5417 (XV771A00)
Power Amplifier
PN-AM 1/2 : IC101
T . S . D
ST. BY
BS BS
FILTER
1 2 3 4 5 6 7 8 9 10 11
DM-LCD : IC006
FUNCTION
Data interface
Common signal output for LCD
driving
Segment signal output for LCD
driving
12 13 14 15
Not for sale!
3/24/2019
PSR-170
11