Topic : Problem with R-link-ADP-ST7-STM8 version 1.2 and version 2.1

Forum : ST7/STM8

Original Post
Post Information Post
September 18, 2009 - 5:58am
Guest

Hi all,

I am Quang Vinh, working for Spitfire Control (VietNam).

I am using R-link (version 1.2 and version 2.1) devices to program for application control board on line (with ICC protocol). But sometime we have a problem with Adaptor: IC 74LVC2T45DCT has burned out. After connecting the wire from pin VCC-TARG to pin 7 of ICC-ST7, adaptor will work. Please help us to diasogtic this problem to prevent it happen again.

My email is . If possible, could you tell me how to prevent this problem on line? From the past to now, we had 4 adaptor burned out.

Thanks and Best Regard,
Replies
Post Information Post
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September 18, 2009 - 10:11am
Raisonance Support Team

Hi,

I'm not sure I understand your description of the problem, but here are some hints...

1. The VCC of the target board MUST be connected to the pin7 of the ADP in all configurations. Working without this can have unpredictable results, including connection failure and hardware damage on the ADP, RLink or target board.

2. You should plug the PW-5V jumper _only_ if you want the RLink to power the target. You must NOT plug it if your target has its own power supply. Did you plug it?

3. I have made extensive tests on the ADPs, sending out-of-spec voltages during long periods and things like this, and found that they are quite robust. All the customers that actually burned them so far have done so by connecting them to mains without isolation. Is your target board isolated from mains? How is it powered?

I hope it helps.

Best Regards,

Vincent
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September 19, 2009 - 7:43am
Guest

Hi,

We use Target board without power supply (VCC) so i plug PW-5V jumper to program for micro ST7. However, ADP always failed (IC 74LVC1G04GW was burned). Please give us your advice to fix this issue.

Best Regard,

Quang Vinh
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September 22, 2009 - 10:28am
Raisonance Support Team

Hi,

Please confirm that you connect pin7 of the ADP to the VCC of the target board.

Please tell us the complete name of the target ST7 device.

In your first post, you speak about versions 1.2 and 2.1... Are you speaking about the adapters (ADP)?
Do they both behave the same?

In your first post you speak about the 74LVC2T45DCT and in your second post you speak about the 74LVC1G04GW... Which one has problems?

If it is the 74LVC1G04GW, please confirm that either your board does not have its own clock, or that you do not plug the 12MHz jumper. If you have both, then you are sending two clocks to the ST7, which can result in connection failure and even physical damage of some devices.

Probably the best way for us to help you fast would be that you send your board's schematic to us. (support@raisonance.com) Otherwise I'll have to ask you lots of questions and it can take ages.

Best Regards,

Vincent
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September 28, 2009 - 4:05am
Guest

Hi,
Sorry for late reply,

Yes, we already connected pin7 of the ADP to the VCC of the target board.

The target ST7 device is ST72F324J6B5.

In your first post, you speak about versions 1.2 and 2.1... Are you speaking about the adapters (ADP)? Yes, we are using both version 1.2 and version 2.1 ADP to program for my product on line, they have the same problem. Its code are R-link-ADP-ST7-STM8-V1.2 and R-link-ADP-ST7-STM8-V2.1. I don't have its schematic, i will ask Steve Gussenhoven enclose when order new pack of ADP.

I will check again all connection as your recommend and hope will fix this problem. Can you list out for me all reasons that maybe effect to the problem of ADP?

Best Regards,

QuangVinh