Sony RM-AV2000T, Service Manual

Page: 20 / 24

4-3. IC PIN FUNCTION
•
IC1 (µPD753017)
µ
PD753017 is the 4-bit single-chip microprocessor for the LCD panel display with the built-in controller and driver.
Pin No.
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69 to 80
I/O
–
I
–
–
I
–
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
O
Pin Function
Positive power supply terminal.
Terminal to which sub-system clock oscillating crystal is connected.
When external clock is used, input the ext. clock to XT1 and leave XT2 open.
XT1 can be used as the 1-bit input (TEST) terminal.
Internally connected to VDD.
Terminal to which main system clock oscillating crystal/ceramic is connected.
When external clock is used, input the ext. clock to X1, and connect the inverted phase signal to XT2.
Parallel fall-down edge detection
testable input terminal.
Parallel fall-down edge detection
testable input terminal.
System reset input terminal.
Segment signal output terminals.
Pin Name
V
DD
XT1
XT2
VPP
X1
X2
P60/KR0
P61/KR1
P62/KR2
P63/KR3
P70/KR4
P71/KR5
P72/KR6
P73/KR7
RESET
S0 to S11
Programmable 4-bit input/output port. (PORT 8).
Input and output can be specified in units of bit.
The pull-up resistor built-in can be specified in units of
4 bits by software.
4-bit input/output port. (PORT 7).
The pull-up resistor built-in can be specified in units of
4 bits by software.
— 23 — — 24 —
Pin No.
1 to 12
13 to 20
21 to 24
25
26 to 28
29 to 32
33
34 to 37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
I/O
O
O
O
O
–
I/O
–
I/O
I
I/O
I/O
I/O
I
I
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Pin Function
Segment signal output terminals.
1-bit output port (BIT-PORT). Used also as the segment signal output terminal.
Common signal output terminal.
Output terminal for cutting off the externally connected dividing resistor.
Power supply terminal for LCD drive. Dividing resistor are built-in. (mask option)
N-ch open-drain 4-bit input/output port. (PORT 4).
Pull-up resistor can be built-in in units of bit. (mask option).
10V withstand voltage in the open-drain connection.
GND terminal.
N-ch open-drain 4-bit input/output port. (PORT 5).
Pull-up resistor can be built-in in units of bit. (mask option).
10V withstand voltage in the open-drain connection.
Edge detection vector interrupt input terminal.
(Both of the rise-up and fall-down edge detections are usable.)
Serial clock input/output terminal.
Serial data output terminal.
Serial bus input/output terminal.
Serial data input terminal.
Serial bus input/output terminal.
Equipped with noise-rejection function.
Clock-synchronous type.
Asynchronous
Edge detection teatble input terminal.
(Rise-up edge detection). Asynchronous.
External event pulse input
terminal to the timer/event counter.
Timer/event counter output terminal.
Timer/event counter output terminal.
Clock output terminal.
Fixed frequency output terminal.
(For buzzer or for trimming the system clock.
Clock output terminal for driving the external expansion driver.
Clock output terminal for synchronizing the external expansion driver.
Pin Name
S12 to S23
BP0 to BP7/
S24 to S31
COM0 to COM3
BIAS
V
LC0
to V
LC2
P40 to P43
Vss
P50 to P53
P00/INT4
P01/SCK
P02/SO/SB0
P03/S1/SB1
P10/INT0
P11/INT1
P12/INT2
P13/TIO
P20/PTO0
P21/PTO1
P22/PCL
P23/BUZ
P30/LCD CL
P31/SYNC
P32
P33
4-bit input port (PORT 0).
The pull-up resistor built-in can be
specified in units of 3 bits by
software for PO1 to PO3.
Edge detection vector interrupt
input terminal.(Detection edge
selectable.)
4-bit input port (PORT 1).
The pull-up resistor built-in can
be specified in units of 4 bits by
software.
4-bit input port (PORT 2).
The pull-up resistor built-in can be
specified in units of 4 bits by
software.
Programmable 4-bit input/output
port. (PORT 3).
Input and output can be set in units
of bit.
The pull-up resistor built-in can be
specified in units of 4 bits by
software.