ATmega169 rev number

May 25, 2004 4 Replies

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Phil 22 years ago

Can anyone help with Atmel ATmega169 rev numbers, I have two chips marked code

0339 and another 0352, is thisjust week 39 and week 52 of 2003? How can I tell what REV number are they? They both behave different so they are either REV B & REV C or REV C & REV D. Anyone help?

Phil

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Jim Granville 22 years ago

Yes,

You need to look under the device, and for Atmel IC's and Rev ID is normally the last letter of one of the lines.

-jg

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Phil 22 years ago

Thanks, but still none the wiser as reverse markings are: week 52 chip: 3H0106 35579D 1-A 3H0345 week 39 chip: 3G0822A 35579D 1-A 3G0339

The week 52 device takes an extra 100uA with the LCD which is what the REV C device should do.

Phil

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Unbeliever 22 years ago

According to the datasheet, the top 4 bits of the device identification register (accessible via jtag only), 0 = REVA ... 3 = REVD

Cheers, Alf

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Phil 22 years ago

Thanks for the info.

Phil

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