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Type
Symbol
14-bit PWM timer
PWM0 to
(PWMX)
PWM3
WDTOVF
Watchdog
timer (WDT)
BUZZ
Serial
TxD4,
communication
TxD3,
interface (SCI)/
TxD2,
Smart Card
TxD1,
interface
TxD0
RxD4,
RxD3,
RxD2,
RxD1,
RxD0
SCK4,
SCK3,
SCK2,
SCK1
SCK0
IrDA-equipped
IrTxD
SCI 1 channel
IrRxD
(SCI0)
2
I
C bus interface
SCL0
(IIC) (optional)
SCL1
SDA0
SDA1
A/D converter
AN15 to AN0 Input
ADTRG
D/A converter
DA3 to DA0
A/D converter,
AVCC
D/A converter
18
I/O
Name and Function
Output
PWMX timer output: PWM D/A pulse output pins.
Output
Watchdog timer overflows: The counter overflows
signal output pin in watchdog timer mode.
Output
BUZZ output: Output pins for the pulse divided by the
watchdog timer.
Output
Transmit data (channel 0, 1, 2): Data output pins.
Input
Receive data (channel 0, 1, 2): Data input pins.
I/O
Serial clock (channel 0, 1, 2): Clock I/O pins.
SCK0 output type is NMOS push-pull.
Output/
IrDA transmission data/receive data: Input/output pins
Input
for the data encoded for the IrDA.
2
I/O
I
C clock input (channel 1, 0):
2
I
C clock input/output pins.
These functions have a bus driving function.
SCL0's output format is an NMOS open drain.
2
I/O
I
C data input/output (channel 1, 0):
2
I
C clock input/output pins.
These functions have a bus driving function.
SCL0's output format is an NMOS open drain.
Analog 15 to 0: Analog input pins.
Input
A/D conversion external trigger input: Pin for input of
an external trigger to start A/D conversion.
Output
Analog output: Analog output pins for D/A converter.
Input
A/D converter and D/A converter power supply pin
When the A/D converter and D/A converter are not
used, this pin should be connected to the system
power supply (+5 V).
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