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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
.
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