MC81F4332 Datasheet, PDF (80/198 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

MC81F4x16
PUR2
R2 PORT PULL-UP ENABLE REGISTER
00DBH
Using the PUR2 register, you can configure pull-up resistors to individual R27-R20 pins.
PUR2
7
6
5
4
3
2
1
0
PUR27 PUR26 PUR25 PUR24 PUR23 PUR22 PUR21 PUR20
R/W R/W R/W R/W R/W R/W R/W R/W
Reset value: 00H
PUR27 R27 Pull-up Resistor Enable Bit
PUR26 R26 Pull-up Resistor Enable Bit
PUR25 R25 Pull-up Resistor Enable Bit
PUR24 R24 Pull-up Resistor Enable Bit
PUR23 R23 Pull-up Resistor Enable Bit
PUR22 R22 Pull-up Resistor Enable Bit
PUR21 R21 Pull-up Resistor Enable Bit
PUR20 R20 Pull-up Resistor Enable Bit
0: Disable pull-up resistor
1: Enable pull-up resistor
0: Disable pull-up resistor
1: Enable pull-up resistor
0: Disable pull-up resistor
1: Enable pull-up resistor
0: Disable pull-up resistor
1: Enable pull-up resistor
0: Disable pull-up resistor
1: Enable pull-up resistor
0: Disable pull-up resistor
1: Enable pull-up resistor
0: Disable pull-up resistor
1: Enable pull-up resistor
0: Disable pull-up resistor
1: Enable pull-up resistor
R2
R2 PORT DATA REGISTER
00C2H
7
6
5
4
3
2
1
0
R2
R27 R26 R25 R24 R23 R22 R21 R20 Reset value: FFH
R/W R/W R/W R/W R/W R/W R/W R/W
In input mode, it represents the R2 port status. 1: High
In output mode, R2 port represents it.
0 : Low
80
October 19, 2009 Ver.1.35