Datasheet

Section 8 I/O Ports
Rev. 6.00 Aug 04, 2006 page 224 of 680
REJ09B0145-0600
Pin Pin Functions and Selection Method
P3
3
/SCK
31
The pin function depends on bits CKE1, CKE0, and SMR31 in SCR3-1 and bit
PCR3
3
in PCR3.
CKE1 0 1
CKE0 0 1 *
COM3
1
01**
PCR3
3
01 **
Pin function P3
3
input pin P3
3
output pin SCK
31
output pin
SCK
31
input pin
• H8/3847R Group, H8/3847S Group
The pin function depends on bit RESO in PMR3 and bit PCR3
2
in PCR3.
RESO 0 1
P3
2
/RESO
(H8/3847R,
H8/3847S)
PCR3
2
01 *
Pin function P3
2
input pin P3
2
output pin RESO output pin
• H8/38347 Group, H8/38447 Group
The pin function depends on bit PCR3
2
in PCR3.
P3
2
(H8/38347,
H8/38447)
PCR3
2
01
Pin function P3
2
input pin P3
2
output pin
• H8/3847R Group, H8/3847S Group
The pin function depends on bit UD in PMR3 and bit PCR31 in PCR3.
P3
1
/UD
(H8/3847R,
H8/3847S)
UD 0 1
PCR3
1
01*
Pin function P3
1
input pin P3
1
output pin UD input pin
P3
1
/UD/EXCL
(H8/38347,
H8/38447)
• H8/38347 Group, H8/38447 Group
The pin function depends on bit EXCL in PMR2, bit UD in PMR3, and bit PCR3
1
in PCR3.
EXCL 0 1
UD 0 1 *
PCR3
1
01**
Pin function P3
1
input pin P3
1
output pin UD input pin EXCL input pin
P3
0
/PWM The pin function depends on bit PWM in PMR3 and bit PCR3
0
in PCR3.
PWM 0 1
PCR3
0
01 *
Pin function P3
0
input pin P3
0
output pin PWM output pin
*: Don’t care