31.2.23.14 Upper BFM Write Protect Register

Table 31-17. Register Bit Attribute Legend
SymbolDescriptionSymbolDescriptionSymbolDescription
RReadable bitHCCleared by Hardware(Grey cell)Unimplemented
WWritable bitHSSet by HardwareXBit is unknown at Reset
KWrite to clearSSoftware settable bit
Name: UBWP
Offset: 0x0070
Reset: 0x0000FFFF
Property: PAC Write Protection, KEY.KEY[7:0] = CFGKEY to unlock when unprotected

Bit 3130292827262524 
 UBWPLOCK        
Access R/W 
Reset 0 
Bit 2322212019181716 
          
Access  
Reset  
Bit 15141312111098 
 UBWP15UBWP14UBWP13UBWP12UBWP11UBWP10UBWP9UBWP8 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 11111111 
Bit 76543210 
 UBWP7UBWP6UBWP5UBWP4UBWP3UBWP2UBWP1UBWP0 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 11111111 

Bit 31 – UBWPLOCK UBWP Lock Bit

Note:
  1. This field can be set at the same time as writing to UBWP. Once set, UBWPLOCK can only be cleared by a reset (Writing zero has no effect.).
  2. This field can only be modified when UBWPLOCK=0, STATUS.BUSY=0 and KEY.KEY=<CFGKEY Value>.
ValueDescription
1UBWP & UBWPLOCK fields are Locked and cannot be modified
0UBWP & UBWPLOCK fields are NOT Locked and can be modified

Bits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 – UBWP Upper Boot Pages Write Protect Bits

Note:
  1. This field can only be modified when UBWPLOCK=0, STATUS.BUSY=0 and KEY.KEY=<CFGKEY Value>.
ValueDescription
1Erase and Write Protection for Upper Boot Page n is Enabled
0Erase and Write Protection for Upper Boot Page n is Disabled