eeprom and bod

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schickb
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Posted by schickb: Thu. May 7, 2009 - 02:15 AM
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The datasheet for the at90usb162 (and others) talks about preventing eeprom corruption by enabling the internal brown-out detector. But I haven't found anything that says what the BOD voltage trigger should be.

Should I just assume that any level under which the cpu itself functions is safe for eeprom operations?

-Brad

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AVR Microcontrollers, megaAVR and tinyAVR
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Bronze Markjs
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Posted by js: Thu. May 7, 2009 - 02:20 AM
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Quote:
I haven't found anything that says what the BOD voltage trigger should be.
Well you only have a choice of about 3 or 4 from the dropdown menu, set it as high as you can for your VCC lelel. Say 4.3V for a 5V system etc.

John Samperi

Ampertronics Pty. Ltd.

https://www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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schickb
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Posted by schickb: Thu. May 7, 2009 - 03:40 AM
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js wrote:
Well you only have a choice of about 3 or 4 from the dropdown menu, set it as high as you can for your VCC lelel. Say 4.3V for a 5V system etc.

Actually there are 7 choices (not included off), but only 3 are below my Vcc target of 3v3. I guess I'll do as you suggest and select the highest one within that range (3.0) and hope that's good enough for eeprom writing.

-Brad

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