32.4.2 Program flash 0 IFR mapThe program flash 0 IFR is a 1 KB nonvolatile information memory, 64 bytes of whichcan be read freely, but the user has no erase and limited program capabilities (see theRead Once, and Program Once commands in Read Once command, and Program Oncecommand). The contents of the program flash 0 IFR are summarized in the followingtable and further described in the subsequent paragraphs.The program flash 0 IFR is located within the program flash 0 memory block.Address Range Size (Bytes) Field Description0x000 – 0x3BF 960 Reserved0x3C0 – 0x3FF 64 Program Once Field32.4.2.1 Program Once fieldThe Program Once field in the program flash 0 IFR provides 64 bytes of user data storageseparate from the program flash 0 main array. The user can program the Program Oncefield one time only as there is no program flash IFR erase mechanism available to theuser. The Program Once field can be read any number of times. This section of theprogram flash 0 IFR is accessed in 8 byte records using the Read Once and ProgramOnce commands (see Read Once command and Program Once command).32.4.3 Data flash 0 IFR mapThe data flash 0 IFR is a 1 KB nonvolatile information memory that can be erased, butthe user has limited program capabilities in the data flash 0 IFR (see the ProgramPartition command in Program Partition command, the Erase All Blocks command inErase All Blocks command in The contents of the data flash 0 IFR are summarized in thefollowing table and further described in the subsequent paragraphs.The data flash 0 IFR is located within the data flash 0 memory block.Address Range Size (Bytes) Field Description0x00 – 0x3FB, 0x3FE – 0x3FF 1022 Reserved0x3FD 1 EEPROM Data Set Size0x3FC 1 FlexNVM Partition CodeChapter 32 Flash Memory Module (FTFC)MWCT101xS Series Reference Manual, Rev. 3, 07/2019NXP Semiconductors 717
