8
8.3.2 Port Direction Registers
P0 Direction Register (P0DIR)
P1 Direction Register (P1DIR)
P2 Direction Register (P2DIR)
P3 Direction Register (P3DIR)
P4
P6
P7
P8
Direction
Direction
Direction
Direction
Register
Register
Register
Register
(P4DIR)
(P6DIR)
(P7DIR)
(P8DIR)
INPUT/OUTPUT PORTS AND PIN FUNCTIONS
8.3 Input/Output Port Related Registers
<Address: H’0080 0720>
<Address: H’0080 0721>
<Address: H’0080 0722>
<Address: H’0080 0723>
<Address:
<Address:
<Address:
<Address:
H’0080
H’0080
H’0080
H’0080
0724>
0726>
0727>
0728>
P9 Direction Register (P9DIR)
P10 Direction Register (P10DIR)
P11 Direction Register (P11DIR)
P12 Direction Register (P12DIR)
P13 Direction Register (P13DIR)
P14 Direction Register (P14DIR)
P15 Direction Register (P15DIR)
P16 Direction Register (P16DIR)
P17 Direction Register (P17DIR)
P18 Direction Register (P18DIR)
P19 Direction Register (P19DIR)
P20 Direction Register (P20DIR)
P21 Direction Register (P21DIR)
P22 Direction Register (P22DIR)
b0
(b8
0
1
9
0
2
10
0
3
11
0
4
12
0
5
13
0
6
14
0
b7
b15)
0
<Address: H’0080 0729>
<Address: H’0080 072A>
<Address: H’0080 072B>
<Address: H’0080 072C>
<Address: H’0080 072D>
<Address: H’0080 072E>
<Address: H’0080 072F>
<Address: H’0080 0730>
<Address: H’0080 0731>
<Address: H’0080 0732>
<Address: H’0080 0733>
<Address: H’0080 0734>
<Address: H’0080 0735>
<Address: H’0080 0736>
Pn0DR Pn1DR Pn2DR Pn3DR
Pn4DR Pn5DR Pn6DR Pn7DR
n = 0–22 (not including P5)
<After reset: H’00>
b
0(b8)
1(b9)
2(b10)
3(b11)
4(b12)
5(b13)
6(b14)
7(b15)
Bit Name
Pn0DR (Port Pn0 direction bit)
Pn1DR (Port Pn1 direction bit)
Pn2DR (Port Pn2 direction bit)
Pn3DR (Port Pn3 direction bit)
Pn4DR (Port Pn4 direction bit)
Pn5DR (Port Pn5 direction bit)
Pn6DR (Port Pn6 direction bit)
Pn7DR (Port Pn7 direction bit)
P40, P60, P64, P80, P81, P90–P92, P120–P123, P170, P171, P204–P207, P221, P223
• After reset, all ports are set for input mode.
Function
0: Input mode
1: Output mode
R
R
R
R
R
R
R
R
R
W
W
W
W
W
W
W
W
W
Notes: • No direction bits are provided for the following ports (read as 0, writing has no effect):
8-8
32180 Group User’s Manual (Rev.1.0)