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S3F80P5_UM_ REV1.00 RESET
RECOMMENDATION FOR UNUSUED PINS
To reduce overall power consumption, please configure unused pins according to the guideline description Table
8-5.
Table 8-5. 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 2.0 • Set Push-pull Output mode
• Set P2 Data Register to #00H.
• Disable Pull-up resister
• No Connection for Pins
• 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
TEST
• Connect to V
SS
.
–
8-19