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31
CHAPTER 2 PIN FUNCTIONS
2.1
List of Pin Functions
The names and functions of this product’s pins are listed below. These pins can be divided into port pins and non-
port pins according to their functions.
(1) Port pins
(1/3)
Pin Name
I/O
PULL
Function
Alternate Function
P00
I/O
Yes
NMI
P01
INTP0
P02
INTP1
P03
INTP2
P04
INTP3
P05
INTP4/ADTRG
P06
INTP5/RTPTRG
P07
INTP6
P10
I/O
Yes
SI0/SDA
P11
SO0
P12
SCK0/SCL
P13
SI1/RXD0
P14
SO1/TXD0
P15
SCK1/ASCK0
P20
I/O
Yes
SI2
P21
SO2
P22
SCK2
P23
RXD1
P24
TXD1
P25
ASCK1
P26
TI2/TO2
P27
TI3/TO3
Remark
PULL: on-chip pull-up resistor
Port 1
6-bit I/O port
Input/output mode can be specified bitwise
Port 2
8-bit I/O port
Input/output mode can be specified bitwise
Port 0
8-bit I/O port
Input/output mode can be specified bitwise
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