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If the address do not require FFFFH, does it mean those addresses are actually not in an unprogrammed state?

Latest Updated:05/27/2013

Question:

In subsection (2) of the FCU Commands section of the Data Flash (Flash Memory for Data Storage) chapter of the user's manual: hardware, it states that "If the area accessed... includes addresses that do not require programming, write FFFFh as the programming data for those addresses." Does this mean that if FFFFh is written as the programming data for addresses that do not require programming, those addresses are actually not in an unprogrammed state?

Answer:

Yes. Because data flash programming is performed in 8-byte or 128-byte units, all addresses within a programming unit are programmed.
When FFFFh is written as the programming data for addresses that do not require programming, those addresses are programmed with FFFFh.
Suitable Products
RX62N, RX621
RX62T
RX610