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Section 8 I/O Ports
Pin
Pin Functions and Selection Method
P3
/SCK
The pin function depends on bits CKE1, CKE0, and SMR31 in SCR3-1 and bit
3
31
PCR3
P3
/RESO
•
2
(H8/3847R,
The pin function depends on bit RESO in PMR3 and bit PCR3
H8/3847S)
•
P3
2
(H8/38347,
The pin function depends on bit PCR3
H8/38447)
•
P3
/UD
1
(H8/3847R,
The pin function depends on bit UD in PMR3 and bit PCR31 in PCR3.
H8/3847S)
Pin function
P3
/UD/EXCL
•
1
(H8/38347,
The pin function depends on bit EXCL in PMR2, bit UD in PMR3, and bit PCR3
H8/38447)
in PCR3.
Pin function
P3
/PWM
The pin function depends on bit PWM in PMR3 and bit PCR3
0
Rev. 6.00 Aug 04, 2006 page 224 of 680
REJ09B0145-0600
in PCR3.
3
CKE1
CKE0
COM3
1
PCR3
3
Pin function
P3
3
H8/3847R Group, H8/3847S Group
RESO
PCR3
2
Pin function
P3
H8/38347 Group, H8/38447 Group
PCR3
2
Pin function
P3
H8/3847R Group, H8/3847S Group
UD
PCR3
0
1
P3
input pin
1
H8/38347 Group, H8/38447 Group
EXCL
UD
PCR3
0
1
P3
input pin
1
PWM
PCR3
0
Pin function
P3
0
0
0
0
1
input pin P3
output pin
3
0
0
1
input pin
P3
output pin
2
2
in PCR3.
2
0
1
input pin
P3
output pin
2
2
0
1
P3
output pin
1
0
0
1
P3
output pin
1
0
0
1
input pin
P3
output pin
0
0
1
1
*
*
SCK
SCK
31
output pin
input pin
in PCR3.
2
1
*
RESO output pin
1
*
UD input pin
1
*
UD input pin
EXCL input pin
in PCR3.
0
1
*
PWM output pin
*: Don't care
1
*
*
*
31
1
1
*
*
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