Generally speaking, FLASH programming mainly includes erasure, code programming, Option word modification operations, Option programming is not introduced below.
The erase of the STM32L0 chip supports not only full chip erase, but also page erase, the size of each page is 128Bytes, that is, 32 words. Programming can be done by word or by half page [64Bytes]. Single-page erase, single-word programming and half-page programming time are the same, about 3.2ms, which is also clear in the chip data manual.