HD643303x Hitachi, HD643303x Datasheet - Page 151

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

Bits P5
output.
P5DR is initialized to H'F0 by a reset and in hardware standby mode. In software standby mode it
retains its previous setting.
Port 5 Input Pull-Up Control Register (P5PCR): P5PCR is an 8-bit readable/writable register
that controls the MOS input pull-up transistors in port 5.
When a P5DDR bit is cleared to 0 (selecting generic input), if the corresponding bit from P5
to P5
P5PCR is initialized to H'F0 by a reset and in hardware standby mode. In software standby mode it
retains its previous setting.
Bit
Initial value
Read/Write
0
PCR is set to 1, the input pull-up transistor is turned on.
7
to P5
4
are reserved. They can be written and read, but they cannot be used for port input or
—
—
7
1
Reserved bits
—
—
6
1
—
—
5
1
136
—
—
4
1
P5 PCR
R/W
3
3
0
Port 5 input pull-up control 3 to 0
These bits control input pull-up
transistors built into port 5
P5 PCR
R/W
2
2
0
P5 PCR
R/W
1
1
0
P5 PCR
R/W
0
0
0
3
PCR