Preliminary User’s Manual U16846EJ1V0UD
27
CHAPTER 2 PIN FUNCTIONS
2.1 Pin Function List
There are two types of pin I/O buffer power supplies: AV
REF
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
AV
REF
P20 to P23
V
DD
Pins other than P20 to P23
(1) Port
pins
Pin Name
I/O
Function
After Reset
Alternate Function
P00
TI000
P01
TI010/TO00
P02
P03
I/O
Port 0.
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
−
P10
SCK10/TxD0
Note
P11
SI10/RxD0
Note
P12
SO10
P13
TxD6
P14
RxD6
P15
TOH0
P16
TOH1/INTP5
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
TI50/TO50/FLMD1
P20 to P23
Input
Port 2.
4-bit input-only port.
Input
ANI0 to ANI3
P30 to 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
INTP1 to INTP4
P120 I/O
Port 12.
1-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 INTP0
P130 Output
Port 13.
1-bit output-only port.
Output
−
Note TxD0 and RxD0 are available only in the
µ
PD78F0102H and 78F0103H.