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USING ST62xx I/O PORTS SAFELY

When using the interrupt input with more than one pin configured for this function, all pins will

be connected together in a logical “AND” function to the same core interrupt input line. A low

signal at any of the inputs will pull the core interrupt line low, signifying an interrupt event. To

get a high signal at the core interrupt line ALL interrupt inputs must be high.

Figure 5. Interrupt schematic for one I/O pin