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st7-stick problem with supply

armbuster4
Associate II
Posted on March 10, 2006 at 05:44

st7-stick problem with supply

1 REPLY 1
armbuster4
Associate II
Posted on March 07, 2006 at 09:03

I try to connect st7-stick with st7flite09 and can do it work correctly about burn or read device. But at this moment I connect +5V from test pin3 to Vdd of st7flite09 and hope that it can use to be supply for it. I click program and read button in stvp but it said '' can not communicate..... check supply ''. i think may be i make a terrible thing so i remove it and connect like when it used to work. but it said '' check supply '' again. Is my st7-stick broken?

How should i know that st7-stick ''work'' or broken? how to examine it? thanks a lot for answer. (In data sheet say if it said ''check supply'' the green LED will turn off but my st7-stick LED still turn on and voltage values in test pin are correctly....but it still said ''check supply'' how strange?)