On Sun, 12 Mar 2000 11:21:09 +0100, you wrote:

>I must draw a schematic *before* having some chips to play with... so, I
>hope you PIClisters could give me an hand...
>
>Reading the datasheet, I understand that enabling LVP (which is on by
>default) I can re-program the 16F876 in circuit, without
>apllying Vhh on the /MCLR pin. But I loose RB3.
>
>But... given that I can firstly program the micro with "normal" (high
>voltage) In Circuit Serial Programming, I'd insert a serial flash
>loader.
>
>When the 16F876 reprograms itself via an UART connection, executing its
>internal "flash loader" code, must the LVP bit be set ?
No
>Have I to give up to RB3 pin ? I'd power the micro with standard 5V,
>however..
The LVP allows external in-circuit programming without a high voltage.
Has no effect on 'internal' self-programming mode.