Re: can imperfect power reset damage flash programmable HC08 ?



> I have noticed that my power off reset did not bring the power
> supply for the HC08 down to 0.1V but only down to about 0.5 V
Some early versions of the GP32 did have a bug in the
undervoltage circuit. Look for the errata*** at the
freescale website.

> It worked ok for some time, it went to a
> few dozens of programming/debugging cycles, say 30, and then it
> become dead (for the Metrowerks).
Do one or more times masserase with a programmer, usually the
chip works again.
There is some cryptic information in the data***/Electrical
Specifications about odd limits in the programming/erasing cycles.

On the topic of 68HC08 bugs: has anyone got the I2C-bus module
on the AP working with lets say an external serial EEPROM ?

MfG JRD
.