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| HD6473887 Datasheet, PDF (167/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer | |||
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Table 8-9 Port 3 Pin Functions
Pin
P35/TXD31
P34/RXD31
P33/SCK31
P32/RESO
P31/UD
P30/PWM
Pin Functions and Selection Method
The pin function depends on bit TE in SCR3-1, bit SPC31 in SPCR, and bit
PCR35 in PCR3.
SPC31
0
1
TE
0
1
PCR35
Pin function
0
P35 input pin
1
P35output pin
*
TXD31 output pin
The pin function depends on bit RE in SCR3-1 and bit PCR34 in PCR3.
RE
0
1
PCR34
Pin function
0
P34 input pin
1
P34 output pin
*
RXD31 input pin
The pin function depends on bits CKE1, CKE0, and SMR31 in SCR3-1 and bit
PCR33 in PCR3.
CKE1
0
1
CKE0
0
1
*
COM31
PCR33
Pin function
0
0
1
P33 input pin P33 output pin
1
*
*
SCK31
output pin
*
*
SCK31
input pin
The pin function depends on bit RESO in PMR3 and bit PCR32 in PCR3.
RESO
0
1
PCR32
Pin function
0
P32 input pin
1
P32 output pin
*
RESO output pin
The pin function depends on bit UD in PMR3 and bit PCR31 in PCR3.
UD
0
1
PCR31
Pin function
0
P31 input pin
1
P31 output pin
*
UD input pin
The pin function depends on bit PWM in PMR3 and bit PCR30 in PCR3.
PWM
0
1
PCR30
Pin function
0
P30 input pin
1
P30 output pin
*
PWM output pin
*: Donât care
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