Port 2 Data Register (P2DR)
Bit
7
P27
0
6
P26
0
5
P25
0
4
P24
0
3
P23
0
2
P22
0
1
P21
0
0
P20
0
Initial value
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
P2DR is an 8-bit register that stores data for pins P27 to P20. When a P2DDR bit is set to 1, if port
2 is read, the value in P2DR is obtained directly, regardless of the actual pin state. When a P2DDR
bit is cleared to 0, if port 2 is read the pin state is obtained.
P2DR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode it
retains its existing values.
Port 2 Input Pull-Up Control Register (P2PCR)
Bit
7
6
5
4
3
2
1
0
P27PCR P26PCR P25PCR P24PCR P23PCR P22PCR P21PCR P10PCR
Initial value
Read/Write
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
P2PCR is an 8-bit readable/writable register that controls the input pull-up transistors in port 2. If
a P2DDR bit is cleared to 0 (designating input) and the corresponding P2PCR bit is set to 1, the
input pull-up transistor is turned on.
P2PCR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode it
retains its existing values.
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HITACHI [ HITACHI SEMICONDUCTOR ]
