Datasheet

Section 10 I/O Ports
REJ09B0465-0300 Rev. 3.00 Page 303 of 982
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
10.6.2 Port Control Register 8 (PCR8)
b7
PCR87
0
b6
PCR86
0
b5
PCR85
0
b4
0
b3
0
b2
0
b1
0
b0
0
H'FFFFF7
Bit:
Address:
Value after reset:
Bit Symbol Bit Name Description R/W
7 PCR87 Port 87 control R/W
6 PCR86 Port 86 control R/W
5 PCR85 Port 85 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.
PCR8 is a register that selects inputs/outputs in bit
units for pins to be used as general I/O ports of
port 8.
R/W
4 to 0 Reserved These bits are read as 0. The write value should
be 0.
PCR87 bit to PCR85 bit (port 87 to 85 control)
When the corresponding pin is designated in PMR8 as a general I/O pin, setting a PCR8 bit to
1 makes the corresponding pin an output port, while clearing the bit to 0 makes the pin an
input port.