MAX10 - 10M02DCV36I7G - BOARD - High current draw or shortcircuit ?

Hi Arg,

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10M02DCV36I7G is not a single supply device - and as your schematic shows, there is no VCC_ONE because this part needs separate supplies for core (1.2V) analogue (2.5V) and I/O (could be the same as one of the other supplies, but you appear to need 3V3).

I don't think that the single-supply parts are available in the WLCSP36 package size. [...] But probably in this case you've simply blown up the device by applying 3V3 to the core.

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You were right the WLCSP36 package is only available in dual supply with maximum 1.5V on the core. So we blew up the core with the 3.3V. I have checked the user guide and according to the naming convention the dc after 10M02 means dual supply. Our previous design was working since we use a 10M02sc with single supply capabilities.

As I cannot dissociate VCCIO and VCC on the PCBs, I made some trials on a fresh board powered by a single 1.2V supply and there is no more short-circuit. My USB blaster isn't compatible with 1.2V I/O levels so I need to add a level shifter circuit prior to test if JTAG is properly operating.

Thanks for your help.

Best regards,

Tim