Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

ByteBlaster 2 current consumption

Hi, I am using ByteBlaster 2 to burn my MAX2 device. My whole circuit current consumption is approx. 100mA. When I connect the ByteBlaster 2, the current consumption goes to approx. 250mA. After t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

OK. I am not totally sure about whether you can reuse JTAG pins on MAX2 devices. I'd need to look it up!

You should still probably check that all your output pins are not connected to other outputs or power rails external to the PLD.

Obviously after programming the device it enters operating mode i.e. it will start driving any outputs so that could explain why you see the higher current after config. I am not sure why disconnecting the ByteBlaster reduces the current. It still suggests to me that something is driving against a ByteBlaster output.