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RL78/G1A CHAPTER 2 PIN FUNCTIONS
(2/2)
Function
Name
Pin Type I/O After Reset Alternate Function Function
P50 7-3-2 Analog input port ANI26/INTP1/SI11/
SDA11
P51 7-1-1
I/O
Input port INTP2/SO11
Port 5.
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.
Output of P50 can be set to N-ch open-drain output
(V
DD tolerance).
P50 can be set to analog input
Note
P60
SCLA0
P61
SDAA0
P62
12-1-1 I/O Input port
−
Port 6.
3-bit I/O port.
Input/output can be specified in 1-bit units.
Output of P60 to P62 can be set to N-ch open-drain
output (6 V tolerance).
P70 7-3-1 I/O Analog input port ANI28/KR0 Port 7.
1-bit I/O port.
Input/output can be specified.
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
.
P120 7-3-1 I/O Analog input port ANI19/(KR0)
P121 X1
P122
2-2-1 Input Input port
X2/EXCLK
Port 12.
1-bit I/O port and 2-bit input only port.
P120 can be set to analog input
Note
.
For only P120, input/output can be specified.
For only P120, use of an on-chip pull-up resistor can be
specified by a software setting at input port.
P137 2-1-2 Input Input port INTP0 Port 13
1bit input only port.
RESET 2-1-1 Input
− −
Input only pin for external reset
When external reset is not used, connect this pin to V
DD
directly or via a resistor.
<R>
Note Digital or analog for each pin can be selected with the port mode control register x (PMCx) (can be set in 1-bit
units).
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 23
Jul 04, 2013