Chapter 7
I/O Port
Control Registers VII - 15
7.2.4 Port n Pull-up Resistor Control Registers
PnPLU is the register to control the pull-up resistor addition to I/O.
Port 0 Pull-up Resistor Control Register (P0PLUP: 0x03F40)
Port 1 Pull-up Resistor Control Register (P1PLUP: 0x03F41)
Port 2 Pull-up Resistor Control Register (P2PLUP: 0x03F42)
bp 76543210
Bit name P0PLU7-0
At reset00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
bp Bit name Description
7-0 P0PLU7-0
Pull-up resistor selection
0: Not added
1: Added
bp 76543210
Bit name P1PLU7-0
At reset00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
bp Bit name Description
7-0 P1PLU7-0
Pull-up resistor selection
0: Not added
1: Added
bp 76543210
Bit name - P2PLU6-0
At reset00000000
Access R R/WR/WR/WR/WR/WR/WR/W
bp Bit name Description
7 - Always read as 0.
6-0 P2PLU6-0
Pull-up resistor selection
0: Not added
1: Added