
INPUT/OUTPUT PORTS AND PIN FUNCTIONS
8
8-13
32185/32186 Group Hardware Manual
Rev.1.10 REJ09B0235-0110 May 15, 07
8.3.2 Port Direction Registers
P0 Direction Register (P0DIR)
<Address: H’0080 0720>
P1 Direction Register (P1DIR)
<Address: H’0080 0721>
P2 Direction Register (P2DIR)
<Address: H’0080 0722>
P3 Direction Register (P3DIR)
<Address: H’0080 0723>
P4 Direction Register (P4DIR)
<Address: H’0080 0724>
P6 Direction Register (P6DIR)
<Address: H’0080 0726>
P7 Direction Register (P7DIR)
<Address: H’0080 0727>
P8 Direction Register (P8DIR)
<Address: H’0080 0728>
P9 Direction Register (P9DIR)
<Address: H’0080 0729>
P10 Direction Register (P10DIR)
<Address: H’0080 072A>
P11 Direction Register (P11DIR)
<Address: H’0080 072B>
P12 Direction Register (P12DIR)
<Address: H’0080 072C>
P13 Direction Register (P13DIR)
<Address: H’0080 072D>
P15 Direction Register (P15DIR)
<Address: H’0080 072F>
P17 Direction Register (P17DIR)
<Address: H’0080 0731>
P22 Direction Register (P22DIR)
<Address: H’0080 0736>
Note: n = 0–13, 15, 17, 22 (not including P5)
<Upon exiting reset: H’00>
b
Bit Name
Function
R
W
0(8)
Pn0DR
0: Input mode
R
W
Port Pn0 direction bit
1: Output mode
1(9)
Pn1DR
Port Pn1 direction bit
2(10)
Pn2DR
Port Pn2 direction bit
3(11)
Pn3DR
Port Pn3 direction bit
4(12)
Pn4DR
Port Pn4 direction bit
5(13)
Pn5DR
Port Pn5 direction bit
6(14)
Pn6DR
Port Pn6 direction bit
7(15)
Pn7DR
Port Pn7 direction bit
Notes: Following bits are not provided (read as 0, writing has no effect):
P40, P60, P64–P67, P80, P81, P90–P92, P120–P123, P151, P152, P154–P157, P170–P173, P176, P177, P222, P223,
P226, P227
All ports are set for input mode upon exiting the reset state.
P221 is an input-only port. Fix it to "0" when write.
After switching from output mode to input mode in the Port Direction Register, or after setting port input enable (PIEN0) bit to
"1" (input enable), pin level can be read after 2BCLK period.
b0
12
3456
b7
(b8
9
10
11
12
13
14
b15)
Pn0DR
Pn1DR
Pn2DR
Pn3DR
Pn4DR
Pn5DR
Pn6DR
Pn7DR
000
0000
0
8.3 Input/Output Port Related Registers