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Rev. 1.0, 07/01, page 129 of 372
P81/FTIOA pin
Register TIOR0 PCR8
Bit Name IOA2 IOA1 IOA0 PCR81 Pin Function
Setting Value 0 0 0 0 P81 input/FTIOA input pin
0 0 0 1 P81 output/FTIOA input pin
0 0 1 X FTIOA output pin
0 1 X X FTIOA output pin
1 X X 0 P81 input/FTIOA input pin
1 X X 1 P81 output/FTIOA input pin
Legend X: Don't care.
P80/FTCI pin
Register PCR8
Bit Name PCR80 Pin Function
Setting Value 0 P80 input/FTCI input pin
1 P80 output/FTCI input pin
9.6 Port B
Port B is an input port also functioning as an A/D converter analog input pin. Each pin of the port
B is shown in figure 9-6.
PB7/AN7
PB6/AN6
PB5/AN5
PB4/AN4
PB3/AN3
PB2/AN2
PB1/AN1
PB0/AN0
Port B
Figure 9-6 Port B Pin Configuration
Port B has the following registers. For details on register addresses and register states during each
process, refer to section 19, Internal I/O Registers.
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Port data register B(PDRB)