Hitachi H8/3937 Series Hardware Manual page 164

Pin Pin Functions and Selection Method
P3 /SCK The pin function depends on bits CKE1, CKE0, and SMR31 in SCR31 and bit
3 31
PCR3
P3 /RESO The pin function depends on bit RESO in PMR3 and bit PCR3
2
P3 /UD The pin function depends on bit UD in PMR3 and bit PCR3
1
152
in PCR3.
3
CKE1
CKE0
COM3
1
PCR3
3
Pin function P3 input pin P3
3
RESO
PCR3
2
Pin function P3
UD
PCR3
1
Pin function P3
0
0
0
0 1
output pin
3
0
0 1
input pin P3 output pin
2 2
0
0 1
input pin P3 output pin
1 1
1
1
*
1
* *
* *
SCK SCK
31
output pin input pin
in PCR3.
2
1
*
RESO output pin
in PCR3.
1
1
*
UD input pin
*: Don't care
31