Samsung S3F80JB User Manual
Page 237
S3F80JB
RESET
8-19
RECOMMENDATION FOR UNUSUED PINS
To reduce overall power consumption, please configure unused pins according to the guideline description Table
8-6.
Table 8-6. Guideline for Unused Pins to Reduced Power Consumption
Pin Name
Recommend
Example
Port 0
•
Set Input mode
•
Enable Pull-up Resister
•
No Connection for Pins
•
P0CONH
← # 00H or 0FFH
•
P0CONL
← # 00H or 0FFH
•
P0PUR
← # 0FFH
Port 1
•
Set Open-Drain Output mode
•
Set P1 Data Register to #00H.
•
Disable Pull-up Resister
•
No Connection for Pins
•
P1CONH
← # 55H
•
P1CONL
← # 55H
•
P1
← # 00H
Port 2
•
Set Push-pull Output mode
•
Set P2 Data Register to #00H.
•
Disable Pull-up resister
•
No Connection for Pins
•
P2CONH
← # 0AAH
•
P2CONL
← # 0AAH
•
P2
← # 00H
•
P2PUR
← # 00H
P3.0–3.1
•
Set Push-pull Output mode
•
Set P3 Data Register to #00H.
•
No Connection for Pins
•
P3CON
← # 11010010B
•
P3
← # 00H
P3.2– P3.3
–
•
No connection
P3.4–P3.5
•
Set Push-pull Output mode
•
Set P3.4 and P3.5 Data Register to #00H.
•
No Connection for Pins
•
P345CON
← # A0H
•
P3
← # 00H
Port 4
•
Set Push-pull Output mode
•
Set P4 Data Register to #00H.
•
No Connection for Pins
•
P4CONH
← # 0AAH
•
P4CONL
← # 0AAH
•
P4
← # 00H
TEST
•
Connect to V
SS
.
–