Power

Analysis:

• If pull-up driven low: P = V²/R, higher R = lower power
• For 3.3V with 100kΩ resistor driven to 0V: P = 0.11mW
• Significant power savings in applications with frequent opposite-level driving

註

Considerations:

• Slower response times may affect interrupt recognition
• May be insufficient for noisy environments requiring strong bias
• Check external driver current capability against pull resistor current