First of all, Wi-Fi module’s types are WizFi210/220, WizFi250, WizFi310, WizFi630A.
Following is the related document link.
WizFi250 : https://wizwiki.net/wiki/doku.php?id=products:wizfi250:start
WizFi310 : https://wizwiki.net/wiki/doku.php?id=products:wizfi310:start
WizFi630A : https://wizwiki.net/wiki/doku.php?id=products:wizfi630a:start
If you want to get the Wizfi210/220’s document, please contact to us.