Sharp CD-C478 Service Manual page 56

CD-C478/478C
ICF1 RH-iX0235AWZZ:System Microcomputer (IX0235AW)
Input/Output
Pin No. Port Name
1-2 P00-P01 Input/Output
3-10 P10-P17 Input/Output
11 P70 Input/Output
12 RES Input
13 XT1/P74 Input
14 XT2/P75 Output
15 VSS1
16 CF1 Input
17 CF2 Output
18 VDD1
19-26 P80-P87 Input
27-29 P71-73 Input
30-37 S0/PA0- Input/Output
S7/PA7
38-45 S8/PB0- Input/OUtput
S15PB7
46-53 S16/PC0- Input/Output
(53)* S23/PC7
54-55 S24/PD0- Input/Output
S25/PD1
56 VDD2
57 VSS2
58-63 S26/PD2- Input/Output
S31/PD7
64-71 S32/PE0- Input/Output
S39/PE7
72-79 S40/PF0- Input/Output
(72)* S47/PF7
80-82 V1/PL4- Input
V3/PL6
83-86 COM0/PL0- Input/Output
COM3/PL3
87-88 P30-P31 Input/Output
89 VSS3
90 VDD3
91-94 P32-P35 Input/Output
95-100 P02-P07 Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
8-Bit input/output port. Input/output can be specified in 4-bit units
HOLD release input. Port 0 interrupt input
8-Bit input/output port. Input/output can be specified in 1-bit units
Dual-purpose function
P10: SIO0 data output
P11: SIO0 data input input/bus input/output
P12: SIO0 clock input/output
P13: SIO1 data output
P14: SIO1 data input input/bus input/output
P15: SIO1 clock input/output
P16: BUZ output
P17: Timer 1 output (PWM output)
6-Bit input port. Dual-purpose function
P70: INT0 input/HOLD release input/Nch-Tr. Output for watchdog timer
Reset terminal
Input terminal for 32.768 KHz crystal oscillator
Connected to VDD when not used
Dual-purpose function
General-purpose input port P74
Output terminal for 32.768 KHz crystal oscillator
Open when not use
Dual-purpose function
General-purpose input port P75
— Negative power terninal
Intput terminal for ceramic oscillator
Output terminal for ceramic oscillator
— Positive power terninal
8-Bit input port. Dual-purpose function
AD input port (8 pcs.)
6-Bit input port. Dual-purpose function
P71: INT1 input/HOLD release input
P72: INT2 input/timer 0 event input
P73: INT3 input (input with noise filter)/ timer 0 event input
Segment output terminal for LCD display
Usable as general-purpose input/output port (PA)
Segment output terminal for LCD display
Usable as general-purpose input/output port (PB)
Segment output terminal for LCD display
Usable as general-purpose input/output port (PC)
Segment output terminal for LCD display
Usable as general-purpose input/output port (PD)
— Positive power terninal
— Negative power terninal
Segment output terminal for LCD display
Usable as general-purpose input/output port (PD)
Segment output terminal for LCD display
Usable as general-purpose input/output port (PE)
Segment output terminal for LCD display
Usable as general-purpose input/output port (PF)
Bias power terminal for LCD drive
Usable as general-purpose input/output port (PL)
Common output terminal for LCD display
Usable as general-purpose input/output port (PL)
6-Bit input/output port. Input/output can be specified in 1-bit units
— Negative power terninal
— Positive power terninal
6-Bit input/output port. Input/output can be specified in 1-bit units
8-Bit input/output port. Input/output can be specified in 4-bit units
HOLD release input. Port 0 interrupt input
Function
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