M38022M4 Datasheet, PDF (60/207 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

2.1.2 Related registers
APPLICATION
2.1 I/O port
Port Pi
b7 b6 b5 b4 b3 b2 b1 b0
Port Pi (Pi) (i = 0, 1, 2, 3, 4, 5, 6)
[Address : 0016, 0216, 0416, 0616, 0816, 0A16, 0C16]
B
Name
Function
0 ^{Port Pi0}
1 Port Pi1
q In output mode
Write
Read
Port latch
2 Port Pi2
3 ^{Port Pi3}
q In input mode
Write : Port latch
Read : Value of pins
4 Port Pi4
5 Port Pi5
6 ^{Port Pi6}
7 ^{Port Pi7}
At reset R W
?
?
?
?
?
?
?
?
Fig. 2.1.2 Structure of Port Pi (i = 0, 1, 2, 3, 4, 5, 6)
Port Pi direction register
b7 b6 b5 b4 b3 b2 b1 b0
Port Pi direction register (PiD) (i = 0, 1, 2, 3, 4, 5, 6)
[Address : 0116, 0316, 0516, 0716, 0916, 0B16, 0D16]
B
Name
0 Port Pi direction register
Function
0 : Port Pi0 input mode
1 : Port Pi0 output mode
At reset R W
0!
1
0 : Port Pi1 input mode
0^!
1 : Port Pi1 output mode
2
0 : Port Pi2 input mode
0^!
1 : Port Pi2 output mode
3
0 : Port Pi3 input mode
0!
1 : Port Pi3 output mode
4
0 : Port Pi4 input mode
0^!
1 : Port Pi4 output mode
5
0 : Port Pi5 input mode
0^!
1 : Port Pi5 output mode
6
0 : Port Pi6 input mode
0!
1 : Port Pi6 output mode
7
0 : Port Pi7 input mode
0^!
1 : Port Pi7 output mode
Fig. 2.1.3 Structure of Port Pi direction register (i = 0, 1, 2, 3, 4, 5, 6)
3802 GROUP USER’S MANUAL
2-3