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Chapter 30 I/O Ports
3.Port Register Settings
■ P30: The functions of Port 30 are controlled by PFR30
Addr
PFR30
0D9Eh
PFR30.7
EPFR30
0DDEh
P30[7:0] is input/output for LCD controller reference voltage analogue inputs V[3:0], and LCD controller common
driver outputs COM[3:0]. Otherwise, the port can be used as general purpose port.
PFR30.7
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is V3 input
PFR30.6
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is V2 input
PFR30.5
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is V1 input
PFR30.4
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is V0 input
PFR30.3
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is COM3 output
PFR30.2
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is COM2 output
PFR30.1
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is COM1 output
PFR30.0
0 - Port is in general purpose port mode.
1 - Port is in resource function mode:
Resource function is COM0 output
492
7
6
5
PFR30.6
PFR30.5
-
-
-
R/W
R/W
R/W
4
3
PFR30.4
PFR30.3
PFR30.2
-
-
R/W
R/W
R/W
2
1
0
PFR30.1
PFR30.0
-
-
-
R/W
R/W
initial
0000 0000
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