Static electricity AND At91sam7s32.

Discussion about SAM7 Series and ARM7TDMI based products.

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Joined: Thu Apr 18, 2013 9:27 am

Static electricity AND At91sam7s32.

Thu Apr 18, 2013 9:58 am

I Am only programmer.
I Have some Camera Processor created using AT91sam7s32. Device Mounted in metall tube near 50 cm(AK74 automat immitator).
And i have some problem when we use in new appartments. Static electricity.
Our firmware break after static electric. (Oh My bad English).
Problem - Firmware dont load and Samba dont loaded into proc. (i track External Oscillator with oscillograph and there no signal. So My program was erased). After 10 sec erase (set 3.3 to TST PA0 PA1 AND PA2) and then programming device begin work normally.

This device invented not i. But I Find that PA0 PA1 AND PA2 already connected to 3.3V. It remains only to connect the TST to high level for earse my firmaware and
Those i think that it is not true.
Also i Want to add TVS Diode to protect proc. Can you help me where most effective place to add TVS DIODE.

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