2010-12-23, 21:32:06
(This post was last modified: 2010-12-23, 21:40:06 by Happy Hunter.)
Today I got a new dev board and new dsPIC30F6010A.
Quick try with flashing 5 times and verifying found no problems.
Yesterday I compared the input data with the data read from flash and I see occasionally 7-th bit missing in upper program word. So the chip might be damaged.
I'm using dev board as it is with nothing connected to it and 7.5v 300mAmp power supply.
I tried the old board<->old chip with 12v 1Amp power supply still same problem with verifying.
Now each setup tested 5 times and consistently:
* new board <-> new chip works no problem.
* old board <-> new chip works no problem.
* suspiciously the new board <-> old chip works as well.
* old board <-> old chip, does not work
Anyways I will keep using new chip and old board and update if there will be any new problem.
Thank you.
BTW I put speed back to max 30Mhz during above mentioned tests
Quick try with flashing 5 times and verifying found no problems.
Yesterday I compared the input data with the data read from flash and I see occasionally 7-th bit missing in upper program word. So the chip might be damaged.
I'm using dev board as it is with nothing connected to it and 7.5v 300mAmp power supply.
I tried the old board<->old chip with 12v 1Amp power supply still same problem with verifying.
Now each setup tested 5 times and consistently:
* new board <-> new chip works no problem.
* old board <-> new chip works no problem.
* suspiciously the new board <-> old chip works as well.
* old board <-> old chip, does not work
Anyways I will keep using new chip and old board and update if there will be any new problem.
Thank you.
BTW I put speed back to max 30Mhz during above mentioned tests