LAPIS Semiconductor ML610421, User Manual, Page: 256 / 437

ML610Q421/ML610Q422/ML610421 User’s Manual
Chapter 19 Port 2
19 – 4
19.2.3 Port 2 control registers 0, 1 (P2CON0, P2CON1)
Address: 0F212H
Access: R/W
Access size: 8/16 bits
Initial value: 00H
7 6 5 4 3 2 1 0
P2CON0
    
P22C0 P21C0 P20C0
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
Address: 0F213H
Access: R/W
Access size: 8 bits
Initial value: 00H
7 6 5 4 3 2 1 0
P2CON1
    
P22C1 P21C1 P20C1
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
P2CON0 and P2CON1 are special function registers (SFRs) to select the output state of the output pin Port 2.
[Description of Bits]
•
P22C0-P20C0, P22C1-P20C1 (bits 2-0)
The P22C0 to P20C0 and P22C1 to P20C1 bits are used to select high-impedance output mode, P-channel open drain
output mode, N-channel open drain output mode, or CMOS output mode.
To directly drive LEDs, select N-channel open drain output mode.
P22C1 P22C0 Description
0 0 P22 pin: In high-impedance output mode (initial value)
0 1 P22 pin: In P-channel open drain output mode
1 0 P22 pin: In N-channel open drain output mode
1 1 P22 pin: In CMOS output mode
P21C1 P21C0 Description
0 0 P21 pin: In high-impedance output mode (initial value)
0 1 P21 pin: In P-channel open drain output mode
1 0 P21 pin: In N-channel open drain output mode
1 1 P21 pin: In CMOS output mode
P20C1 P20C0 Description
0 0 P20 pin: In high-impedance output mode (initial value)
0 1 P20 pin: In P-channel open drain output mode
1 0 P20 pin: In N-channel open drain output mode
1 1 P20 pin: In CMOS output mode