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IBB bit stuck in one master system MCF52259, reset does not help

Question asked by Timofei Bolshakov on Jul 31, 2013
Latest reply on Jul 31, 2013 by TomE

I have a custom board with MCF52259 and EEPROM Atmel AT24C128C connected to its I2C0.


I used a I2C library written by my colleague and come across a situation when IBB in ISR for I2C0 stuck

at high (and I have one master system) and this bit is not cleared by reset.

Power cycle clears this bit just fine.


Most likely I will be able to rewrite my I2C code and create a working program, but

stuck bit might be a bug in the processor.


Does anybody have an idea about that?