Where is the lock byte located in my EFM8BB3 device?
Regardless of the flash size, the Code Security Page containing the lock byte is always located at the same address. The Code Security Page is from address 0xFA00 to 0xFBFF on the 16k, 32k, and 64k EFM8BB3 devices.
Knowledge Base Articles
should that not be in the data sheet/reference manua?
The next revision of the datasheet that is coming very soon will include this information.