On 23-Jan-02 Tim Webb wrote:
> Is it ok to have capacitance between Vcc & GND during ICSP?

Yes that is OK, and is probably essential as there is "stuff" going on inside
the PIC (eeprom programming etc) that will still need a properly decoupled
power supply.

I think the issue is to do with capacitance on the pins used for ICSP (RB6,7)
and the drive capability of the circuit driving them.

I have RB6,7 of the target ZIP socket wired directly to pins on the 16F628
that does the ICSP in the programmer.

I can program devices even with a LCD module wired to PORTB on the target, but
not with a simple LED port monitoring device attached to PORTB.

NOTE: When ever the target PIC is NOT in ICSP mode the pins on the 16F628 are
set as inputs.


----------------------------------
E-Mail: Peter Onion <ponion@srd.bt.co.uk>
Date: 24-Jan-02
Time: 10:24:39

This message was sent by XFMail
----------------------------------

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.