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Rev. 1.00, 05/04, page 103 of 544
7.2.2 Port 2 Data Register (P2DR))
P2DR stores output data for port 2.
Bit Bit Name
Initial
Value R/W Description
7 P27DR 0 R/W
6 P26DR 0 R/W
5 P25DR 0 R/W
4 P24DR 0 R/W
3 P23DR 0 R/W
2 P22DR 0 R/W
1 P21DR 0 R/W
0 P20DR 0 R/W
If a port 2 read is performed while P2DDR bits are set
to 1, the P2DR values are read directly, regardless of
the actual pin states. If a port 2 read is performed while
P2DDR bits are cleared to 0, the pin states are read.
7.2.3 Port 2 Pull-Up MOS Control Register (P2PCR)
P2PCR controls the port 2 on-chip input pull-up MOSs.
Bit Bit Name
Initial
Value R/W Description
7 P27PCR 0 R/W
6 P26PCR 0 R/W
5 P25PCR 0 R/W
4 P24PCR 0 R/W
3 P23PCR 0 R/W
2 P22PCR 0 R/W
1 P21PCR 0 R/W
0 P20PCR 0 R/W
The input pull-up MOS is turned on when a P2PCR bit
is set to 1 in the input port state.
7.2.4 Pin Functions
• P27, P26, P25, P24, P23, P22, P21, P20
The pin function is switched as shown below according to the state of the P2nDDR bit.
P2nDDR 0 1
Pin Function P27 to P20 input pins P27 to P20 output pins
[Legend]
n = 7 to 0