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LPC2114 revision /01 SPI1 SPIF failure

Question asked by Ant Goffart on Jul 24, 2017
Latest reply on Aug 21, 2017 by CarlosCasillas
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We have been making a product using the LPC2114 (64 pin TQFP) for 5 or 6 years.

 

Recently we built a new batch that now uses the /01 silicon revision.

 

We are now getting problems with the SPI1 interface. The units will work correctly for several hours, using SPI1 to poll external devices, and then for no apparent reason the SPIF flag fails to get set at the end of a SPI transfer. This causes a watchdog reset, however the SPIF flag continues not to work unless the power is disconnected.

 

Anyone seen this before?

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