23.1 Description

The One-Time Programmable (OTP) Memory Controller (OTPC) is the secure interface between the system and the OTP memory.

The default value of a memory bit is logic ‘0’ (not programmed). A programmed memory bit is logic ‘1’.

An OTP matrix is a type of non-volatile memory. Each bit in the matrix can be programmed only once. The bits are used to store data such as:

• calibration bits for analog cells (for example, RC oscillators, etc.),
• hardware configuration settings (for example, JTAG disable, etc.),
• chip identifiers,
• key data invisible by software,
• user data.