Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
900
38.13 Register Write Protection
To prevent any single software error from corrupting HSMCI behavior, certain registers in the address space can
be write-protected by setting the WPEN bit in the
(HSMCI_WPMR).
If a write access to a write-protected register is detected, the WPVS bit in the
(HSMCI_WPSR) is set and the field WPVSRC indicates the register in which the write access has been
attempted.
The WPVS bit is automatically cleared after reading the HSMCI_WPSR.
The following registers can be protected:
The WPVS bit is automatically cleared after reading the HSMCI_WPSR.
The following registers can be protected: