NEC PD78214 - Manual (Page 101)

72
µ
PD78214 Sub-Series
Fig. 5-14 Port 3 Mode Register Format
Fig. 5-15 Port 3 Mode Control Register (PMC3) Format
PM37
7
PM36
6
PM35
5
PM34
4
PM33
3
PM32
2
PM31
1
PM30
0
PM3
PM3n
Input mode (output buffer OFF)
Output mode (output buffer ON)
Specifies I/O mode of pin PM3n (n = 0 to 7)
(FFH when RESET is input)
0
1
PMC37
7
PMC36
6
PMC35
5
PMC34
4
PMC33
3
PMC32
2
PMC31
1
PMC30
0
PMC3
PMC30
RxD input mode
I/O port mode
Specifies control mode of pin P30
(00H when RESET is input)
0
1
PMC31
TxD output mode
I/O port mode
Specifies control mode of pin P31
0
1
PMC32
SCK I/O mode
I/O port mode
Specifies control mode of pin P32
0
1
PMC33
SO output mode/SB0 I/O mode
I/O port mode
Specifies control mode of pin P33
0
1
PMC3n
TOn output mode (n = 0 to 3)
I/O port mode
Specifies control mode of pin P3n (n = 4 to 7)
0
1