Datasheet

Section 9 I/O Ports
Rev. 6.00 Mar. 24, 2006 Page 126 of 412
REJ09B0142-0600
Bit Bit Name
Initial
Value R/W Description
0 WKP0 0 R/W P50/WKP0 Pin Function Switch
Selects whether pin P50/WKP0 is used as P50 or as
WKP0.
0: General I/O port
1: WKP0 input pin
9.3.2 Port Control Register 5 (PCR5)
PCR5 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 5.
Bit Bit Name
Initial
Value R/W Description
7
6
5
4
3
2
1
0
PCR57
PCR56
PCR55
PCR54
PCR53
PCR52
PCR51
PCR50
0
0
0
0
0
0
0
0
W
W
W
W
W
W
W
W
When each of the port 5 pins P57 to P50 functions as
an general I/O port, setting a PCR5 bit to 1 makes the
corresponding pin an output port, while clearing the bit
to 0 makes the pin an input port.
Note: Do not set PCR57 and PCR56 to 1 for H8/3664N.