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What's wrong with M4 reset (M4_RST) on LPC43x0?

Question asked by Dan Stahlke on Mar 14, 2018
Latest reply on Mar 18, 2018 by jeremyzhou

The errata sheet says M4_RST is not functional on LPC43x0.  But I tried it on LPC4370 revisions C and D and it seems to work.  Is the errata wrong, or is this function broken in some subtle way?

 

If M4_RST really can't be used, is there a way to simulate reset (for the purpose of a bootloader) without resetting GPIO configuration?  I don't like the pulses that come out of the I/O pins when doing a hard reset.

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