7220 Datasheet, PDF (249/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPENDIX
6.7 Control registers
6.7 Control registers
Port Pi Direction Register
b7 b6 b5 b4 b3 b2 b1 b0
Port Pi direction register (Di) (i=0,1,2) [Addresses 00C116, 00C316, 00C516]
B
Name
0 Port Pi direction register
1
2
3
4
5
6
7
Functions
0 : Port Pi0 input mode
1 : Port Pi0 output mode
0 : Port Pi1 input mode
1 : Port Pi1 output mode
0 : Port Pi2 input mode
1 : Port Pi2 output mode
0 : Port Pi3 input mode
1 : Port Pi3 output mode
0 : Port Pi4 input mode
1 : Port Pi4 output mode
0 : Port Pi5 input mode
1 : Port Pi5 output mode
0 : Port Pi6 input mode
1 : Port Pi6 output mode
0 : Port Pi7 input mode
1 : Port Pi7 output mode
After reset R W
0 _RW
0 RW
0 _RW
0 RW
0 _RW
0 RW
0 _RW
0 RW
Fig. 6.7.1 Port Pi direction register
Addresses 00C116, 00C316, 00C516
Port P3 Direction Register
b7 b6 b5 b4 b3 b2 b1 b0
Port P3 direction register (D3) [Address 00C716]
B
Name
Functions
0 Port P3 direction register
0 : Port P30 input mode
1 : Port P30 output mode
1
0 : Port P31 input mode
1 : Port P31 output mode
2
0 : Port P32 input mode
1 : Port P32 output mode
3 _{Nothing is assigned. These bits are write disable bits.}
to _{When these bits are read out, the values are “0.”}
7
After reset R W
0 RW
0 RW
0 RW
0 R—
Fig. 6.7.2 Port P3 direction register
6-30
7220 Group User’s Manual
Address 00C716