Sony MHC-RG270 Service Manual page 67

PANEL BOARD IC701 µPD780232GC-508-8BT-A (FL/LED DRIVER)
Pin No. Pin Name
1 VDD1
2 VSS1
3 X1
4 X2
5 IC
6 RESET
7 SCK1
8 SI1
9 SO1
10 to 15
NC
16
CE
17 NC
18 AVSS
19 to 22 KEY1 to KEY4
23 VSS0
24 AVDD
25 VDD0
STREAM LED1 to
26 to 31
STREAM LED6
32 SW LED
33 to 44 NC
45 to 58 S1 to S14
59 VDD2
60 VLOD
61 to 67
S15 to S21
68 to 80 G1 to G13
I/O
- Power supply terminal (+3.3V)
- Ground terminal
I
System clock input terminal (4.19 MHz)
O System clock output terminal (4.19 MHz)
I Not used
I System reset signal input from the system controller "L": reset
I Serial data transfer clock signal input from the system controller
O Serial data output to the system controller
I Serial data input from the system controller
Not used
I
Chip select signal input from the system controller
I
I Not used
- Ground terminal
I Front panel key input terminal (A/D input)
- Ground terminal
- Power supply terminal (+5V)
- Power supply terminal (+5V)
O LED drive signal output terminal
LED drive signal output terminal
O
Not used
I
O Segment drive signal output to the fluorescent indicator tube
- Power supply terminal (+5V)
-
Power supply terminal (for fluorescent indicator tube drive)
O
Segment drive signal output to the fluorescent indicator tube
O Grid drive signal output to the fluorescent indicator tube
HCD-GX355/GX555/RG270/RG475/RG575
Description
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