Nikhil Praveen wrote: > does that mean PICs are unsuitable for this purpose? Probably, yeah. Ideally, you'd want a fast microprocessor with powerful timers, a large memory space accessible through an external address/data bus, analog inputs, maybe an analog output or two, etc. Motorola and Intel, among others, have micros that were specifically designed for automotive engine-management applications; you may have better luck with one of those than with a PIC. -Andy === Andrew Warren -- aiw@cypress.com === Principal Design Engineer === Cypress Semiconductor Corporation === === Opinions expressed above do not === necessarily represent those of === Cypress Semiconductor Corporation -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu