P1pur — port 1 pull-up control register, P1pur – Samsung S3C8275X User Manual
Page 97
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
CONTROL
REGISTER
4-27
P1PUR
—
Port 1 Pull-up Control Register
F9H
Set 1, Bank 0
Bit
Identifier
.7 .6 .5 .4 .3 .2 .1 .0
Reset Value
0 0 0 0 0 0 0 0
Read/Write
R/W R/W R/W R/W R/W R/W R/W R/W
Addressing Mode
Register addressing mode only
.7
P1.7's Pull-up Resistor Enable Bit
0
Disable pull-up resistor
1
Enable pull-up resistor
.6
P1.6's Pull-up Resistor Enable Bit
0
Disable pull-up resistor
1
Enable pull-up resistor
.5
P1.5's Pull-up Resistor Enable Bit
0
Disable pull-up resistor
1
Enable pull-up resistor
.4
P1.4's Pull-up Resistor Enable Bit
0
Disable pull-up resistor
1
Enable pull-up resistor
.3
P1.3's Pull-up Resistor Enable Bit
0
Disable pull-up resistor
1
Enable pull-up resistor
.2
P1.2's Pull-up Resistor Enable Bit
0
Disable pull-up resistor
1
Enable pull-up resistor
.1
P1.1's Pull-up Resistor Enable Bit
0
Disable pull-up resistor
1
Enable pull-up resistor
.0
P1.0's Pull-up Resistor Enable Bit
0
Disable pull-up resistor
1
Enable pull-up resistor
NOTE: A pull-up resistor of port 1 is automatically disabled only when the corresponding pin is selected as push-pull output
or
alternative
function.