Daily Archive: January 10, 2015

Locked OTP Bytes 1

Library 49- One-Time programmable (OTP) bytes on STM32F4

STm32F4xx devices have OTP (One-Time-Programmable) bytes. They can be used for permanent store of configuration data for your device. Bytes are structured in 16 data blocks where each block has 32 data bytes of available memory. There is also 17th block with 16 bytes of data. His “work” is to store information about states of data block, because you can lock each block forever even if it is totally empty. Important notes: When you write data to specific OTP location...