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Altera_Forum
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15 years ago

Cyclone III EP3C25 High Temperature Booting Problem

Dear Friends, I am facing a high temperature booting problem with EP3C25F324. I found that the FPGA can not boot up at temperature over 40 Centigrade while doing the temperature cycling tests....
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Actually I used the AS and JTAG combining configuration scheme. I have checked that all the MSEL signals are all directly connected to GND and 2.5 V respectively. But for nCE, I used a 10K ohm as the pull down resistor. This is also the suggestion from the handbook of cyclone III- Chapter 9-figure 9-29:Combining JTAG and AS Configuration Schemes. I exactly followed this scheme.

By the way, during the test, I found that the only thing which can affect the booting process is the high temperature; in room temperature, everything goes well without any problem.