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Please do not copy my text without quoting!pic1702 said:I guess you would have to look at the diagram on page 24 of the datasheet, and experiment with the value of the FOSC3:FOSC0 bits in the config. word CONFIG1H, which is 111x for your setting at the moment. So just change 'x' and see if it works.
polymath said:Plesa
MPLAB - Debugger - Settings - run self test for diagnosis
you may have a problem with
Target Vdd - check ICD2 voltage is within spec
or
Target Vpp - check ICD2 voltage is within spec
or
as I found with my Cypress clone voltage divider feeding RA0 on 877a needs modifying - I used:
Vdd/Vpp-------6k8-------RA0------1k8-------Vss
this solved my problem - hope it helps Polymath
Added after 3 minutes:
Plesa
Check Configure ......... Select Device ........... (correct target selection)
Check Configure ......... Configuration bits ..... (correct config bit options)
Polymath
potyo said:I had 2 problems:
1. If i use 24MHz quartz, the device is not recognized by Windows.
PiCS said:icd2 with Pic16F877a+Pic18F4550+Firmware work ok
Thanks for all