Port 3 Mode Register Format; Port 3 Mode Control Register (Pmc3) Format - NEC PD78212 User Manual

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