MCUmall EPROM BIOS Chip Burner Forum
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NovaSec

United Kingdom
27 Posts

Posted - 09/18/2010 :  08:07:46  Show Profile  Reply with Quote
Anbody got a datasheet on the above or know where i can find one as google is not my friend at the moment.
Reply #1

TK-tech

1 Posts

Posted - 12/28/2015 :  16:11:41  Show Profile  Reply with Quote
I understand this post is 5 years old now, but it's one of the first results that comes up on Google when you search for ATMLH802's. I figured I would add some information regarding the identification of these parts for future reference, should anyone ever need it.

The ATMLH802's (and many other similar ICs) are ATMEL EEPROMs. There is a second 3 character code that follows the ATML**** that is the truncated part number.
For example (taken from Atmel's datasheet):

As etched on IC:

   |---|---|---|---|---|---|---|---|
     A   T   M   L   H   Y   W   W
   |---|---|---|---|---|---|---|---|
     0   2   B       1
   |---|---|---|---|---|---|---|---|
     *   Lot Number
   |---|---|---|---|---|---|---|---|
     |
    Pin 1 Indicator (Dot)
H = Material Set
Y = Seal Year
WW = Seal Week
02B = Device
1 = Voltage Indicator
*Lot Number to Use ALL Characters in Marking

As you can see, the second string of characters is the truncated part. Append Atmel's AT24C (EEPROM Part Prefix) to the device code (02B) and you get the complete part number!
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Reply #2

BustedOpen

1 Posts

Posted - 03/23/2016 :  18:57:59  Show Profile  Reply with Quote
Hey, even 5 years after the original post, your reply came in handy! I found the chip on a pcb in a device I busted into, and I couldn't find what it was. Thanks again!
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