63.10.52 SPI Write Protection Mode Register

Name: FLEX_SPI_WPMR
Offset: 0x4E4
Reset: 0x00000000
Property: Read/Write

Bit 3130292827262524 
 WPKEY[23:16] 
Access WWWWWWWW 
Reset 00000000 
Bit 2322212019181716 
 WPKEY[15:8] 
Access WWWWWWWW 
Reset 00000000 
Bit 15141312111098 
 WPKEY[7:0] 
Access WWWWWWWW 
Reset 00000000 
Bit 76543210 
      WPCRENWPITENWPEN 
Access R/WR/WR/W 
Reset 000 

Bits 31:8 – WPKEY[23:0] Write Protection Key

ValueNameDescription
0x535049 PASSWD

Writing any other value in this field aborts the write operation of bits WPEN, WPITEN and WPCREN.

Always reads as 0.

Bit 2 – WPCREN Write Protection Control Enable

ValueDescription
0

Disables the write protection on control register if WPKEY corresponds to 0x535049 (“SPI” in ASCII).

1

Enables the write protection on control register if WPKEY corresponds to 0x535049 (“SPI” in ASCII).

Bit 1 – WPITEN Write Protection Interrupt Enable

ValueDescription
0

Disables the write protection on interrupt registers if WPKEY corresponds to 0x535049 (“SPI” in ASCII).

1

Enables the write protection on interrupt registers if WPKEY corresponds to 0x535049 (“SPI” in ASCII).

Bit 0 – WPEN Write Protection Enable

See 63.8.8 SPI Register Write Protection for the list of registers that can be write-protected.

ValueDescription
0

Disables the write protection if WPKEY corresponds to 0x535049 (“SPI” in ASCII).

1

Enables the write protection if WPKEY corresponds to 0x535049 (“SPI” in ASCII).