AM3359: Board is not booting

Titus Stalin

Expert 1180 points

Part Number: AM3359

Hello Experts,

My custom (AM3359) board is not booting after connecting the 3V3 to AIN4 pin.

Why its not booting if I connect the 3V3 to AIN4 ? After this only I realized AIN pins supports 1V8.

I am wondering why its not booting this case, AM3359 chip gone once I connected 3V3 to AIN4.

Don't want try the samething with my another custom board.

Can you please help me to understand the issue ?

Would like to understand, its due to our custom design, or the same issue will come in Beaglebone black board.

Thanks for the help.

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

Yes, you have damaged the processor. ADC inputs accept voltages up to 1.8V. You must replace the AM335x.

0 Titus Stalin over 8 years ago in reply to Biser Gatchev-XID

Expert 1180 points

Oops. :(
Thanks Biser for your reply.

0 Titus Stalin over 8 years ago in reply to Biser Gatchev-XID

Expert 1180 points

Hi Biser,
How about other pins ? processor can get damaged even we connect to other 1V8 supported pins ?
Ex:
If we supply 5V on any GPIO pin which supports 3V3, again the processor can get damaged ?
We need to make sure these things in our production & testing team.
Thanks for the help.

0 Biser Gatchev-XID over 8 years ago in reply to Titus Stalin

TI__Guru**** 393215 points

Yes, it will be damaged. Read section 5.1 of the AM335x Datasheet Rev. J. Look at parameter "Steady state max voltage at all IO pins" and Note 8 after the table.

0 Titus Stalin over 8 years ago in reply to Biser Gatchev-XID

Expert 1180 points

Thanks Biser.

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AM3359: Board is not booting