Datasheet

Section 10 I/O Ports
REJ09B0465-0300 Rev. 3.00 Page 273 of 982
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
10.1.2 Port Control Register 1 (PCR1)
b7
PCR17
0
b6
PCR16
0
b5
PCR15
0
b4
PCR14
0
b3
PCR13
0
b2
PCR12
0
b1
PCR11
0
b0
PCR10
0
H'FFFFF0
Bit:
Address:
Value after reset:
Bit Symbol Bit Name Description R/W
7 PCR17 Port 17 control R/W
6 PCR16 Port 16 control R/W
5 PCR15 Port 15 control R/W
4 PCR14 Port 14 control R/W
3 PCR13 Port 13 control R/W
2 PCR12 Port 12 control R/W
1 PCR11 Port 11 control R/W
0 PCR10 Port 10 control
0: When the corresponding pin is designated as a
general I/O port, the pin functions as an input
port.
1: When the corresponding pin is designated as a
general I/O port, the pin functions as an output
port.
When the corresponding pin is designated in PMR1
as a general I/O pin, setting a PCR bit to 1 makes
the corresponding pin an output port, while clearing
the bit to 0 makes the pin an input port.
In the H8S/20103 and H8S/20115 Groups, bits
PCR14 and PCR10 are reserved. Only 0 should be
written to these bits.
R/W