22.4.3.2.3 Optimized Partial Page Programming
The EEFC automatically detects the number of 128-bit words to be programmed. If only one 128-bit aligned word is to be programmed in the Flash array, the process is optimized to reduce the time needed for programming.
If several 128-bit words are to be programmed, a standard page programming operation is performed.
See Figure 22-10.