24.22.2.3 NVMKEY – Programming Unlock Register

Name: NVMKEY
Offset: 0x20
Reset: 0x00000000
Property: -

Bit 3130292827262524 
 NVMKEY[31:24] 
Access WWWWWWWW 
Reset 00000000 
Bit 2322212019181716 
 NVMKEY[23:16] 
Access WWWWWWWW 
Reset 00000000 
Bit 15141312111098 
 NVMKEY[15:8] 
Access WWWWWWWW 
Reset 00000000 
Bit 76543210 
 NVMKEY[7:0] 
Access WWWWWWWW 
Reset 00000000 

Bits 31:0 – NVMKEY[31:0] Unlock Register bits

These bits are write-only and read ‘0’ on any read.
Note: This register is used as part of the unlock sequence to prevent inadvertent writes to the program Flash.