Kevin Huffman

HC9S12 Level Sensitive IRQ Operation

Discussion created by Kevin Huffman on Mar 16, 2010
Latest reply on Mar 17, 2010 by Kevin Huffman

In the default configuration (level sensitive), if the IRQ is asserted (line pulled low) and the IRQ service routine is executed, will another interrupt be generated if the line remains low? In other words, is the IRQ line required to be driven high before a second IRQ interrupt can be generated when configured for level sensitive operation?