MN101C115 Datasheet, PDF (24/170 Pages) Panasonic Semiconductor – Request for your special attention and precautions in using the technical information and semiconductors described in this book

Chapter 1 Overview
Table 1-3-1 Pin Function Summary (3/4)
Pin No. Name Type Dual Function Function
Description
20
TXD
Output SBO0(P00) UART transmit In the serial interface in UART mode, these pins are configured as
data output pin the receive data input pin and transmit data output pin.
21
RXD
Input SBI0(P01) UART receive A push-pull or n-channel open-drain configuration can be selected for
data input pin
TXD by the SC0MD1 register.
Pull-up resistors can be selected by the P0PLU register. The TXD
and RXD pins are also allocated as P00 and P01 respectively. When
not used as serial/UART pins, these can be used as normal I/O pins.
20
SBO0 Output TXD(P00) Serial interface Transmit data output pin for serial interfaces 0. The output
transmit data
configuration, either CMOS push-pull or n-channel open-drain, and
output pin
pull-up resistors can be selected by the software. Set these pins to the
output mode by the P0DIR register.
SBO0 is allocated as P00. This may be used as normal I/O pin when
the serial interface is not used.
21
SBI0
Input RXD(P01) Serial interface Receive data input pin for serial interfaces 0. Pull-up resistor can be
receive data input selected by the P0PLU register.
pin
Set these pins to the input mode by the P0DIR register.
SBI0 is allocated as P01. This can be used as normal I/O pin when the
serial interface is not used.
22
SBT0
I/O
P02
Serial interface
clock I/O pin
Clock I/O pin for serial interface 0. The output configuration, either
CMOS push-pull or n-channel open-drain output, can be selected by
the software. The direction of SBT0 is selected by the P0DIR register
in accordance with the communication mode. Pull-up resistors can be
selected by the P0PLU register. SBT0 is allocated as P02. This can be
used as normal I/O pin when the serial interface is not used.
22
Buzzer I/O
P06
Buzzer output
Piezoelectric buzzer driver pin. The driving frequency can be
selected in the range of fs/2 to fs/2 by the DLYCTR register. Select
output mode by the P0DIR register and select buzzer output by the
DLYCTR register. When not used for buzzer output, this pin can be
used as a normal I/O pin.
24
RMOUT I/O
26 to 28 TM2IO to I/O
TM4IO
P10
P12 to P14
Remote control transmit Output pin for remote control transmit signal with a carrier signal.
signal output pin
Can be used as a normal I/O pin when remote control is not used.
Timer I/O pins
Event counter clock input pins, overflow pulse output pins and PWM
signal output pins for timer 2 to 4.
To use these pins as event clock inputs, configure them as inputs by
the P1DIR register. For overflow pulse and PWM output, configure
these pins as outputs by the P1DIR register. When the pins are used as
inputs, pull-up resistors can be specified by the P1PLU register. When
not used for timer I/O, these can be used as normal I/O pins.
10 Pins