Omega Vehicle Security OME-PIO-D56 manual Muliti-Interrupt Source, PC0 PC1 PC2 PC3

2.4.5Muliti-Interrupt Source

Assume: PC0 is initial Low, active High, PC1 is initial High, active Low PC2 is initial Low, active High PC3 is initial High, active Low

as follows :

PC0

PC1

PC2

PC3

PC0 & PC1 are active at the same time.

PC2 & PC3 are active at the same time.

PC0 & PC1 are return to normal at the same time.

PC2 & PC3 are return to normal at the same time.

Refer to DEMO5.C for source program. All these four falling-edge & rising-edge can be detected by DEMO5.C.

Note: When the interrupt is active, the user program has to identify the active signals. These signals may be active at the same time. The interrupt service routine has to service all active signals at the same time.

OME-PIO-D56/PIO-D24 User Manual (Ver.2.1, Oct/2003, PPH-005-21) ---- 16