Hi, Has anyone been able to use the external RAM on the Infineon XC16x development board in 16 bit multiplexed mode? I've wrote a small RAM test application that will read and write all memory, but the external RAM always trips up after a few seconds. I suspect the timings may be out on this, since it works most of the time, but will fail eventually. I have the following values: Phase A = 0 cycles Phase B = 0 cycles Phase C = 1 cycle Phase D = 0 cycles Phase E = 0 cycles Phase F read = 1 cycle Phase F write = 0 cycles Does anyone know a set of timing values that work? The micro is an XC164CS running at 40MHz, and the memory chip is a Samsung K6R4016C1D. Incidentally, the RAM test program shows the memory working perfectly in non-multiplexed mode. The timings are different for non-multiplexed, but give worse results when used in multiplexed mode. Any help appreciated! Thanks, Paul.