Problem ICP programming ST72F324L device with STVP

[patm4]

Posted on June 29, 2009 at 14:43

Problem ICP programming ST72F324L device with STVP

[patm4]

Posted on June 29, 2009 at 14:43

I have been developing an application on the ST72F324LK6T6 with DVP3.

During emulation all is well.

When I solder chip to app board and try to ICP program (with STVP ) I get an error message ''PROBLEM DOWNLOADING MONITOR''

I have programmed many devices with this setup and not had problem, but this is the first time on the 3v parts.

I have done the following:-

1) Checked the ICC schematic against the datasheet.

2) Removed target crystal, connected ICCOSC to OSC1 and connected OSC2 to GND. The ICCOSC signal has been checked with a scope for the presence of a clock.

3) Checked DVP settings ICP-OPT Disable and 3V app. supply switch setting.

I have read a little about the ICC protocol and have confirmed the pulses on ICCDATA.

One thing I did note was that the VOH levels on the ICCDATA and ICCCLK are a little marginal ( 2.4-2.5v ). I tried pullup resistors on the app board on these lines but it made no difference.

The RESET and ISPSEL lines also seem ok.

Any suggestions ?

Are there any firmware updates for DVP3 ?

[vilas]

Posted on July 29, 2010 at 07:31

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Kindly Share if You have.