Filter
Top Products
RL78/G1A CHAPTER 2 PIN FUNCTIONS
2.1.2 32-pin products
(1/2)
Function
Name
Pin
Type
I/O After Reset Alternate Function Function
P02 7-3-2
ANI17/TI00/TxD1/
(KR1)
P03 8-3-2
I/O Analog input
port
ANI16/TO00/RxD1/
(KR2)
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 at input port.
Input of P03 can be set to TTL input buffer.
Output of P02 and P03 can be set to N-ch open-drain
output (V
DD tolerance).
Can be set to analog input
Note 1
.
P10
ANI18/SCK00/
SCL00/(KR0)
P11
8-3-2
ANI20/SI00/RxD0/
TOOLRxD/SDA00/
(KR1)
P12
ANI21/SO00/TxD0/
TOOLTxD/(KR2)
P13
7-3-2
ANI22/TxD2/SO20/
(KR3)
P14
ANI23/RxD2/SI20/
SDA20/(KR4)
P15
8-3-2
I/O Analog input
port
ANI24/PCLBUZ1/
SCK20/SCL20/(KR5)
Port 1.
6-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 at input port.
Input of P10, P11, P14, and P15 can be set to TTL input
buffer.
Output of P10 to P15 can be set to N-ch open-drain
output (V
DD tolerance).
Can be set to analog input.
P20 ANI0/AVREFP
P21 ANI1/AVREFM
P22 ANI2/(KR3)
P23 ANI3/(KR4)
P24
4-3-1 I/O Analog input
port
ANI4/(KR5)
Port 2.
5-bit I/O port.
Input/output can be specified in 1-bit units.
Can be set to analog input
Note 2
.
P30 ANI27/INTP3/
SCK11/SCL11
P31
7-3-1 I/O Analog input
port
ANI29/TI03/TO03/
INTP4/PCLBUZ0
Port 3.
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 at input port.
Can be set to analog input
Note 1
.
P40 7-1-1 I/O Input port TOOL0
Port 4.
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 at input port.
<R>
Notes 1. Digital or analog for each pin can be selected with the port mode control register x (PMCx) (can be set in 1-
bit units.
2. Digital or analog for each pin can be selected with the A/D port configuration register (ADPC).
Remark Functions in parentheses in the above figure can be assigned via settings in the peripheral I/O redirection
register (PIOR). See Figure 4-8 Format of Peripheral I/O Redirection Register (PIOR).
R01UH0305EJ0200 Rev.2.00 22
Jul 04, 2013