If you want an official datasheet you get to have to sign some piece of paper (NDA) ridiculousness with Expressif.
Or you could just google for it using a phrase such as "ESP8266_Specifications_English.pdf". It was hit number two for me
I could only find an outline document - 23 pages from Oct 12, 2013.
Can someone who has signed the NDA confirm that this is *the* datasheet? I was expecting much more detail
If there are more detailed documents available - perhaps we should have a guessing game for these filenames? (just for fun and novelty value only, naturally)
And in this world where I can just type a few characters into my computer and find this 'confidential' thing - what is the point of the NDA??
If I design a circuit and take it to market having used a datasheet I downloaded, I haven't broken any contract because I never signed any. So are there any consequences for me?
As Bunnie said - "Sometimes, you just have to stand up and assert your rights."
So what would be the consequences for me and my putative designs if I stood up and said - yeah sure I downloaded as much info as I could about this chip - ie this confidential datasheet - I was desperate to get it working - and the manufacturers were falling well short of normal standards in providing information!?