cancel
Showing results for 
Search instead for 
Did you mean: 

st7f521 programming

vlad_r
Associate II
Posted on December 01, 2005 at 11:32

st7f521 programming

1 REPLY 1
vlad_r
Associate II
Posted on December 01, 2005 at 11:32

Hello!

I need help in programming the above mentioned chip. I use DataBlaze & Indart stx for programming. I want to work with crystall oscillator 8mhz installed between osc1 & osc2.

For the first programming i connect pin9 of ICP connector to osc1 with crystall uninstalled. I choose option byte oscillator resonator.

The programming is succesfull.

After programming i install the crystall & disconnect pin9. The aplication works well.

The one of the next programmings result in communication error.

The problem is that i can't overcome the comunication error:

Not with Ignore Option bytes not with Useoption bytes,

not with returning to the connection of first programming.

I have already three cards corrupted this way. It seems as if micro is dammaged. Can somebody halp me to ''repair''it.

thanks