# Explanation of Numbers on ATtiny?

I'm thinking about doing this project, which uses ATtiny13. I noticed this particlular one has the numbers 0624 and 20pu. I found some on ebay that have 1234 ATtiny13A 10pu or 0721 20pu? Are there any differences between these versions of ATtiny13?

active| newest | oldestThe other numbers are date codes. For example 0624 tells you the chip was manufactured on the 24th week of 2006. 1234 is the 34th week of 2012 and so on.

click the data sheet.

The numbers mean package, date of manufacture, place of manufacture, lot number and the like.

They mean something try this sight to find out:

http://www.maxim4u.com/

Just enter ATtiny13A

Joe