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Rev. 1.0, 07/01, page 116 of 372
P10/TMOW pin
Register PMR1 PCR1
Bit Name TMOW PCR10 Pin Function
Setting value 0 0 P10 input pin
0 1 P10 output pin
1 X TMOW output pin
Legend X: Don't care.
9.2 Port 2
Port 2 is a general I/O port also functioning as a SCI3 I/O pin. Each pin of the port 2 is shown in
figure 9-2. The register settings of PMR1 and SCI3 have priority for functions of the pins for both
uses.
P22/TXD
P21/RXD
P20/SCK3
Port 2
Figure 9-2 Port 2 Pin Configuration
Port 2 has the following registers. For details on register addresses and register states during each
process, refer to section 19, Internal I/O Registers.
•
Port control register 2(PCR2)
•
Port data register 2(PDR2)
9.2.1
Port Control Register 2(PCR2)
PCR2 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 2.