Posted on June 29, 2009 at 14:43I 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 ?
