What attiny45 is used?

what kind of Attiny45 is used in Lumen subsea Light, i did not find that in any pcb software library??

Hi @subham, welcome to the forum :slight_smile:

From the schematic that’s included in the technical details on our Lumen product page, it’s an ATtiny45-20 in an 8-pin surface mount package, and from the ATtiny datasheet the only relevant option is an 8-pin SOIC. From the datasheet’s ordering information table that would be one of ATtiny45-20SU / SUR / SH / SHR depending on the material finish on the pins, and whether it’s bought as individual chips or on a reel.

If that’s not what you’re asking about then please clarify. It may also help to know what you’re trying to achieve.

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