Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos
Los códigos de productos
ATSAM4S-XPLD
469
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
28.2.15 Write Protection Registers
To prevent any single software error that may corrupt PMC behavior, certain address spaces can be
write protected by setting the WPEN bit in the
write protected by setting the WPEN bit in the
If a write access to the protected registers is detected, then the WPVS flag in the PMC Write Protect
Status Register (PMC_WPSR) is set and the field WPVSRC indicates in which register the write
access has been attempted.
Status Register (PMC_WPSR) is set and the field WPVSRC indicates in which register the write
access has been attempted.
The WPVS flag is reset by writing the PMC Write Protect Mode Register (PMC_WPMR) with the
appropriate access key, WPKEY.
appropriate access key, WPKEY.
The protected registers are: