M37221M4H_15 Datasheet, PDF (96/114 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Addresses 00C116, 00C316, 00C516
Port Pi Direction Register
b7 b6 b5 b4 b3 b2 b1 b0
Port Pi direction register (Di) (i=0,1,2) [Addresses 00C1 16, 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
Address 00C716
Port P3 Direction Register
b7 b6 b5 b4 b3 b2 b1 b0
Port P3 direction register (D3) [Address 00C716]
B
Name
Functions
After reset R W
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
0
RW
0
RW
2
0 : Port P32 input mode
0
RW
1 : Port P32 output mode
3 to 7 ^{Nothing is assigned. These bits are write disable bits.}
indeterminate R —
When these bits are read out, the values are indeterminate.
Rev.1.00 Oct 01, 2002 page 94 of 110
REJ03B0134-0100Z