RL78/G13 CHAPTER 4 PORT FUNCTIONS
R01UH0146EJ0100 Rev.1.00 202
Sep 22, 2011
Table 4-9. Settings of Registers When Using Port 5
Pin Name
Name I/O
PM5× PIM5× POM5×
Alternate Function Setting
Note 5
Remark
Input 1
− × ×
0 0 CMOS output
P50
Output
0 1
SDA11 output = 1
Note 1
N-ch O.D. output
Input 1
− − ×
P51
Output 0
SO11 output = 1
Note 1
Input 1
− × ×
0 0
SO31 output = 1
Note 2
CMOS output
P52
Output
0 1 N-ch O.D. output
1 0
× ×
CMOS input Input
1 1
× ×
TTL input
0
×
0 CMOS output
P53
Output
0
×
1
SDA31 output = 1
Note 2
N-ch O.D. output
1 0
× ×
CMOS input Input
1 1
× ×
TTL input
0
×
0 CMOS output
P54
Output
0
×
1
SCK31/SCL31 output = 1
Note 1
N-ch O.D. output
1 0
× ×
CMOS input Input
1 1
× ×
TTL input
0
×
0 CMOS output
P55
Output
0
×
1
(SCK00 output = 1
Note 3
)
(PCLBUZ1 output = 0
Note 4
)
N-ch O.D. output
Input 1
− − −
P56, P57
Output 0
Notes 1. To use P50 as a general-purpose port in 24- to 100-pin products or to use P51 as a general-purpose port
in 30- to 100-pin products, set serial channel enable status register 0 (SE0), serial output register 0 (SO0)
and serial output enable register 0 (SOE0) to the default status.
2. P52/SO31, P53/SI31/SDA31, P54/SCK31/SCL31 as a general-purpose port, set serial channel enable
status register 1 (SE1), serial output register 1 (SO1) and serial output enable register 1 (SOE1) to the
default status.
3. To use P55 as a general-purpose port when PIOR1 = 1, set serial channel enable status register 0 (SE0),
serial output register 0 (SO0) and serial output enable register 0 (SOE0) to the default status.
4. To use P55 as a general-purpose port when PIOR4 = 1, set clock output select registers 1 (CKS1) to the
default status.
5. The descriptions in parentheses indicate the case where PIORx = 1.
Remark ×: don’t care
PM5×: Port mode register 5
PIM5×: Port input mode register 5
POM5×: Port output mode register 5
PIOR×: Peripheral I/O redirection register
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