Port Control Register 1 (Ptcnt1) - Renesas H8S Series Hardware Manual

Section 8 I/O Ports
8.17.2

Port Control Register 1 (PTCNT1)

PTCNT1 selects ports that also function as IIC input/output pins.
Bit Bit Name Initial Value R/W
7 SCL0AS 0
6 SCL1AS 0
5 SCL0BS 0
4 SCL1BS 0
3 SDA0AS 0
2 SDA1AS 0
1 SDA0BS 0
0 SDA1BS 0
Note: PTCNT1 must be written to while the ICE bit in ICCR is cleared to 0.
Rev. 3.00 Jul. 14, 2005 Page 244 of 986
REJ09B0098-0300
Description
R/W IIC0
R/W 0000: P52/SCL0
R/W 1000: PG5/ExSCLA
R/W 0100: P52/SCL0
0010: PG7/ExSCLB
0001: P52/SCL0
1001: PG5/ExSCLA
0110: PG7/ExSCLB
Settings other than those shown above are prohibited.
R/W IIC0
R/W 0000: P97/SDA0
R/W 1000: PG4/ExSDAA
R/W 0100: P97/SDA0
0010: PG6/ExSDAB
0001: P97/SDA0
1001: PG4/ExSDAA
0110: PG6/ExSDAB
Settings other than those shown above are prohibited.
IIC1
P86/SCL1
P86/SCL1
PG5/ExSCLA
P86/SCL1
PG7/ExSCLB
PG7/ExSCLB
PG5/ExSCLA
IIC1
P42/SDA1
P42/SDA1
PG4/ExSDAA
P42/SDA1
PG6/ExSDAB
PG6/ExSDAB
PG4/ExSDAA