Ic Pin Functions - Sony RM-AV2000T Service Manual

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