Datasheet
RL78/L12 CHAPTER 2 PIN FUNCTIONS
R01UH0330EJ0200 Rev.2.00 24
Dec 13, 2013
2.1.3 48-pin products
(1/2)
Function
Name
Pin Type I/O After Reset Alternate Function Function
P10 8-5-7 I/O
Digital input
invalid
SCK00/TI07/TO07/
SEG28/
(INTP1)
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 at input port.
Input of P10, P11, P15, and P16 can be set to TTL
input buffer.
Output of P10, P12, P15, and P17 can be set to N-
ch open-drain output (V
DD tolerance).
P13 and P14 can be set to analog input
Note 1
.
P11 8-5-1
SI00/RxD0/
TOOLRxD/SEG29/
(INTP2)
P12 7-5-7
SO00/TxD0/
TOOLTxD/SEG30/
(TI02)/(TO02)
P13 7-10-1
Analog input
port
ANI18/SEG31
P14 ANI19/SEG32
P15 8-5-7
Digital input
invalid
SCK01/INTP1/SEG4
P16 8-5-1 SI01/INTP2/SEG5
P17 7-5-7 SO01/TI02/TO02/SEG6
P20 4-3-1 I/O
Analog input
port
ANI0/AV
REFP
Port 2.
2-bit I/O port.
Input/output can be specified in 1-bit units.
Can be set to analog input
Note 2
.
P21 ANI1/AVREFM
P30 7-5-1 I/O
Digital input
invalid
TI01/TO01/KR3/
SEG19
Port 3.
3-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.
P31
INTP3/RTC1HZ/
KR2/SEG18
P32
TI03/TO03/INTP4/
KR1/SEG17
P40 7-1-1 I/O Input port TOOL0
Port 4.
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.
P41 can be set to analog input
Note 1
.
P41 7-10-1
Analog input
port
ANI16/TI04/TO04/
SEG24
Notes 1. When the each pin is used as input, specify them as either digital or analog in Port mode control register X
(PMCX) (This register can be specified in 1-bit unit).
2. Setting digital or analog to each pin can be done in 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). Refer to Figure 4-8 Format of Peripheral I/O Redirection Register (PIOR).
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