MC81F4204 Datasheet, PDF (70/150 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

MC81F4204
PUR1
R1 PORT PULL-UP ENABLE REGISTER
00D6H
Using the PUR1 register, you can configure pull-up resistors to individual R17-R10 pins.
PUR1
7
-
R/W
6
-
R/W
5
-
R/W
4
3
2
1
0
PUR14 PUR13 PUR12 PUR11 PUR10
R/W R/W R/W R/W R/W
Reset value: 00H
-
PUR14
bit7 – bit5
R14 Pull-up Resistor Enable Bit
PUR13 R13 Pull-up Resistor Enable Bit
PUR12 R12 Pull-up Resistor Enable Bit
PUR11 R11 Pull-up Resistor Enable Bit
PUR10 R10 Pull-up Resistor Enable Bit
Not used for MC81F4204
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
R1
R1 PORT DATA REGISTER
00C1H
7
6
5
4
3
2
1
0
R1
-
-
-
R14 R13 R12 R11 R10 Reset value:
R/W R/W R/W R/W R/W R/W R/W R/W
---0_0000b
In input mode, it represents the R1 port status. 1: High
In output mode, R1 port represents it.
0: Low
70
October 19, 2009 Ver.1.35