The 16f628 seems to be THE 16x84 killer: cheaper, more memory, a UART, etc.
It is even possible to free the OSC and MCLR pins and use these as I/O. But
that raises a question: when MCLR is configured as I/O, and the program does
something with this pin (for instance pull it low), how can I get the chip
in (high-voltage) programming mode? The ICSP guide does not address this
question. I do not know another PIC that is both flash and has an MCLR pin
that can be configured as I/O, so this issue might be specific to this chip.
Has anyone expecrience with this chip and a self-build programmer?

Wouter

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