MC81F4204 Datasheet, PDF (66/150 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

MC81F4204
PUR0
R0 PORT PULL-UP ENABLE REGISTER
00C9H
Using the PUR0 register, you can configure pull-up resistors to individual R07-R00 pins.
PUR0
7
6
5
4
3
2
1
0
PUR07 PUR06 PUR05 PUR04 PUR03 PUR02 PUR01 PUR00
R/W R/W R/W R/W R/W R/W R/W R/W
Reset value: 00H
PUR07 R07 Pull-up Resistor Enable Bit
PUR06 R06 Pull-up Resistor Enable Bit
PUR05 R05 Pull-up Resistor Enable Bit
PUR04 R04 Pull-up Resistor Enable Bit
PUR03 R03 Pull-up Resistor Enable Bit
PUR02 R02 Pull-up Resistor Enable Bit
PUR01 R01 Pull-up Resistor Enable Bit
PUR00 R00 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
R0
R0 PORT DATA REGISTER
00C0H
7
6
5
4
3
2
1
0
R0
R07 R06 R05 R04 R03 R02 R01 R00 Reset value: 00H
R/W R/W R/W R/W R/W R/W R/W R/W
In input mode, it represents the R0 port status. 1: High
In output mode, R0 port represents it.
0: Low
66
October 19, 2009 Ver.1.35