LAPIS Semiconductor ML610421, User Manual, Page: 241 / 437

ML610Q421/ML610Q422/ML610421User’s Manual
Chapter 17 Port 0
17 – 4
17.2.3 Port 0 Control Registers 0, 1 (P0CON0, P0CON1)
Address: 0F206H
Access: R/W
Access size: 8/16 bits
Initial value: 00H
7 6 5 4 3 2 1 0
P0CON0
   
P03C0 P02C0 P01C0 P00C0
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: 0F207H
Access: R/W
Access size: 8 bits
Initial value: 00H
7 6 5 4 3 2 1 0
P0CON1
   
P03C1 P02C1 P01C1 P00C1
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
P0CON0 and P0CON1 are special function registers (SFRs) to select the input mode of Port 0.
[Description of Bits]
•
P03C0-P00C0, P03C1-P00C1 (bits 3-0)
The P03C0 to P00C0 bits and the P03C1 to P00C1 bits are used to select high-impedance input mode, input mode
with a pull-down resistor, or input mode with a pull-up resistor. The P0nC0 bit and the P0nC1 bit determine the
input mode of P0n (Example: When P02C0 = “0” and P02C1 = “1”, P02 is in input mode with a pull-up resistor).
P03C1-P00C1 P03C0-P00C0 Description
0 0 High-impedance input mode (initial value)
0 1 Input mode with a pull-down resistor
1 0 Input mode with a pull-up resistor
1 1 High-impedance input mode