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Chapter 25 External Interrupt
1.Overview
Chapter 25 External Interrupt
1. Overview
External interrupt detects a signal input to an external interrupt input pin, and generates an interrupt request.
2. Features
Quantity : 16 (INT input -- 16 channels: INT0-INT15)
Interrupt levels: 4 levels
“L” level
“H” level
Rising edge
Falling edge
Edge
detection
circuit
Pins Interrupt requests