10.4.6 Protection Against Spurious Writes

A write sequence is valid only when both the following conditions are met. This prevents spurious writes that might lead to data corruption.

1. All NVM read, write and erase operations are enabled with the NVMCMD control bits. It is suggested to have the NVMCMD bits cleared at all times except during memory writes. This prevents memory operations if any of the control bits are set accidentally.
2. The NVM unlock sequence must be performed each time before all operations except the memory read operation.