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aduc845 ADC external synchronization

Question asked by Petya on Apr 1, 2011
Latest reply on Apr 14, 2011 by Petya

I use aduc845 in a data aquisition device, which is connected to the SPI bus as a slave. There are 3 identical slaves and a master. The master must take data from all the slaves 500 times/sec. As far as I can see, the best solution is to synchronize all ADCs in all slaves by external signal, generated by the master.

 

I've tried to launch single conversion from INT0 handler. But the problem is that 1st conversion delay is way longer that 1/500 sec.

 

How can I synchronize aduc8xx ADC?

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