43.7.80 ISC Write Protection Mode Register

Name:	ISC_WPMR
Offset:	0x540
Reset:	0x00000000
Property:	Read/Write


Bit	31	30	29	28	27	26	25	24
	WPKEY[23:16]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	23	22	21	20	19	18	17	16
	WPKEY[15:8]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	15	14	13	12	11	10	9	8
	WPKEY[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0


Bit	7	6	5	4	3	2	1	0
						WPCREN	WPITEN	WPCFGEN
Access						R/W	R/W	R/W
Reset						0	0	0

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

Value	Name	Description
0x584953	PASSWD	Writing any other value in this field aborts the write operation of the WPCFGEN,WPITEN,WPCREN bits. Always reads as 0.

Bit 2 – WPCREN Write Protection Control Registers Enable

Value	Description
0	Disables the write protection of control registers if WPKEY corresponds to 0x584953 (“XIS” in ASCII).
1	Enables the write protection of control enable/disable registers if WPKEY corresponds to 0x584953 (“XIS” in ASCII).

Bit 1 – WPITEN Write Protection Interrupt Registers Enable

Value	Description
0	Disables the write protection of interrupt enable/disable registers if WPKEY corresponds to 0x584953 (“XIS” in ASCII).
1	Enables the write protection of interrupt enable/disable registers if WPKEY corresponds to 0x584953 (“XIS” in ASCII).

Bit 0 – WPCFGEN Write Protection Configuration Registers Enable

Value	Description
0	Disables the write protection of configuration registers if WPKEY corresponds to 0x584953 (“XIS” in ASCII).
1	Enables the write protection of configuration registers if WPKEY corresponds to 0x584953 (“XIS” in ASCII).

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.