6.5.2 Memory Map

Refer to the Memory Map chapter or use the CMSIS *.SVD files provided for each part when implementing your tools. In addition, these registers from the ROM Configuration (ROMCFG) fuse are relevant for programming and debugging the device:

Table 6-1. ROMCFG Key Values
AddressNameDisables/AllowsBit Field ValuesValue after Chip Erase
0x0D00_0018KEYVAL_CRCCMD_CRC (check memory integrity)KEYVAL[31:0]0xFFFF_FFFF
0x0D00_0020KEYVAL_CE_ALLCMD_CE_ALL (Chip Erase)KEYVAL[31:0]0xFFFF_FFFF
0x0D00_0028KEYVAL_SDAL0CMD_SDAL0 (Set Debugger Access Level to 0)KEYVAL[31:0]0xFFFF_FFFF
Note: Decoding of KEYVAL bit field values:
  • All bytes are 0xFF: Command is allowed
  • All bytes are 0x00: Command is diabled