JVC TH-A30 Service Manual page 19

3. Pin function
Pin No. Symbol I/O
1 P16/BUZ I/O
2 P17/PWM0 I/O
3 P30 I/O
to to
10 P37
11 P70/INT0 I/O
12 RES
13 XT1/P74
14 XT2/P75
15 VSS1
16 CF1
17 CF2
18 VDD1
19 P80/AN0
to to
22 P83/AN3
23 P84/AN4
to to
26 P87/AN7
27 P71/INT1
28 P72/INT2/T0I
29 P72/INT3/T0I
30 S0/T0
to to
36 S6/T6
37 S7/T7
to to
45 S15/T15
46 VDD3
47 S16/PC0 I/O
to to
50 P19/PC3
51 VP
52 S20/PC4 I/O
to to
63 S31/PD7
64 S32/PE0 I/O
to to
71 S39/PE7
72
VDD4
73 S40/PF0 I/O
to to
80 S47/PF7
81 S48/PG0 I/O
to to
84 S51/PG3
85 P00 I/O
86 P01
87 P02
88 P03
89 VSS2
90 VDD2
91 P04 I/O
92 P05
93 P06
94 P07
95 P10/SO0 I/O
96 P11/SI0/SB0
97 P12/SCK0
98 P13/SO1
99 P14/SI1/SB1
100 P15/SCK1
Function
Buzzer output
Timer 1 output (PWM0 output)
8bit input/output port
Input/output in bit unit
15V withstand at N-channel open drain output
INT0 input /HOLD release/N-channel Tr. ouptput forwatchdog timer
I Reset pin
I 32.768kHz crystal oscillation terminal XT1
I 32.768kHz crystal oscillation terminal XT2
- Power pin (-)
I Input pin for the ceramic resonator oscillation
O Output pin for the ceramic resonator oscillation
- Power pin (+)
I 4-bit input port
Input /output in bit unit
O
I INT1 input/HOLD release input
I INT2 input/timer 0 event input
O Output for VFD display controller segment/timing incommon
O Output for VFD dis;lay controller segment/timing withinternal pull-down
resistor in common
Internal pull-down resistor output
- Power pin (+)
Output for VFD display controller
High voltage input port PC0 to PC3
- Power pin (+) for the VFD output pull-down resist
Output for VFD display controller
High voltage input port PC4 to PC7, PD0 to PD7
Output for VFD displaya controller segment
High voltage input port PE0 to PE7
Power pin (+)
-
Output for VFD displaya controller segment
High voltage input port PF0 to PF7
Output for VFD displaya controller segment
High voltage I/O port PG0 to PG3
8-bit input/output port. Input for port0 interrupt.
Input/output in nibble unit
Input for HOLD release
15V withstand at N-channel open drain output
- Power pin (-)
- Power pin (+)
8-bit input/output port. Input for port0 interrupt.
Input/output in nibble unit
Input for HOLD release
15V withstand at N-channel open drain output
SIO0 data output
SIO0 data input/bus input/output
SIO0 clock input/output
SIO1 data output
SIO1 data input/bus input/output
SIO1 clock input/output
8-bit input/output port
Input/output can be specified in a bit unit
TH-A30
1-19