Hello,I recently soldered a MAX10 single 3.3v supply part (10M02SCE144C8G) onto a breakout board to run some experiments with. I connected all the IO supplies to 3.3v successfully loaded a "blinky" sof and pof using the internal oscillator via JTAG - and it works as expected. The problem I have is that the FPGA draws 200-220mA all the time even if erased (by the Quartus17 programmer via JTAG). The Max10 EPE and the Quartus power tool both suggest I should see _much_ lower current consumption when in user mode and pretty much idle. There is no appreciable VCCIOx current draw. The heat is being dissipated in the FPGA and I don't have a short on my PCB. I haven't found any logic function in the part which is broken. I set up a 2000 bit shift register to use 90% of the LEs and that worked as expected clocked from the internal oscillator (~116MHz IIRC) I have been through the PCG (pin connection guide) old altera branded and new intel branded and think I have connected the minimum I need. I have tried configuring all unused pins as inputs with pull ups and outputs driving ground & get the same current draw. The minimal connections I made are: all powers = 3v3 (+ decoupling caps) all grounds TCK, TDO, TMS, TDI to a jtag connector with pullups/downs as per UG-M10CONFIG 3-3 nSTATUS,CONF_DONE,nCONFIG 10k pull up to VCCIO8 LED on pin14 I can think of 2 possibilities: 1) There is some pin(s) I need must connect so some IO is oscillating or somesuch. 2) I damaged the part during soldering. Does anyone have experience of similar issues? Can heat damage to the internal regulator cause these symptoms? Thanks, Chris
Hi,just to mention (as you said, you've soldered the device to a breakout board)... Did you also connect the exposed Pad "below" the package to GND like stated in the PinOut file?
Hello,Yes it is an EP adapter board and I confirmed I had a good connection by testing continuity between the ground plane (EP) and other FPGA ground pins before I connected those other ground pins. I measure ~16 ohms accross VCC_ONE to GND which would give me my 200mA+ current draw @3.3v by ohms law. This makes me think I damaged the part rather than it being misconfigured and/or inputs oscillating - but intosc, logic & FLASH work as expected & I have found no damaged function... Chris
Hello,Not sure what happened to my first reply. I will try again. Yes the EP was soldered and connected to ground. I measured ~15ohms between VCC_ONE and GND which seems wrong so I took the part off. With it off I also measure 15 ohms so I think I must have damaged the on chip (single 3.3v supply FPGA) regulator when I fitted it the first time. So it does seem the part was damaged and not a pin connection thing. I assume it was heat damage. Chris