Preliminary User’s Manual U19014EJ1V0UD
20
CHAPTER 2 PIN FUNCTIONS
2.1 Pin Function List
There are two types of pin I/O buffer power supplies: EV
DD
and V
DD
. The relationship between these power
supplies and the pins is shown below.
Table 2-1. Pin I/O Buffer Power Supplies
Power Supply
Corresponding Pins
EV
DD
Port pins other than P121 and P122
V
DD
•
P121 and P122
•
Pins other than port
(1) Port
functions
Function Name
I/O
Function
After Reset
Alternate Function
P00
TI000
P01
I/O
Port 0.
2-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a software
setting.
Input port
TI010/TO00
P10
SCK10
P11
SI10
P12
SO10
P13
TxD6
P14
RxD6
P15
−
P16
TOH1
P17
I/O
Port 1.
8-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a software
setting.
Input port
TI50/TO50
P30
INTP1
P31
INTP2/OCD1A
P32
INTP3/OCD1B
P33
I/O
Port 3.
4-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a software
setting.
Input port
TI51/TO51
P60
−
P61
I/O
Port 6.
2-bit I/O port.
Output of P60 and P61 is N-ch open-drain output (6 V
tolerance).
Input/output can be specified in 1-bit units.
Input port
−
P120
INTP0
P121
X1/OCD0A
P122
I/O
Port 12.
3-bit I/O port.
Input/output can be specified in 1-bit units.
Only for P120, use of an on-chip pull-up resistor can be
specified by a software setting.
Input port
X2/EXCLK/OCD0B
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