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Altera_Forum's avatar
Altera_Forum
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18 years ago

Was my chip burnt ?

I tested the voltage of ASM1117 1.2V on my board, which is 2.5V, and the current is 190.2mA. Obviously, the VCCINT of cyclone2 should be 1.2v, so i doubt whether the chip was burnt. When i cut t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

How do you measure the short? Do you use a digital multimeter with the classical "beep" function? Take care that the impedance to ground of a 1.2V Vcc track coming from the ASM chip is typically at a limit (around 90ohm) that makes a "beep" or not. So you may better try to measure the resistance value and check that it is always the same at every power up.

Anyway I suggest you to replace the ASM chip, it may be damaged and create problems to the FPGA.