AT32UC3L064-D3HES ATMEL [ATMEL Corporation], AT32UC3L064-D3HES Datasheet - Page 407

• Manufacturer Part Number: AT32UC3L064-D3HES
• Manufacturer: ATMEL [ATMEL Corporation]

20.6.12
32099D–06/2010
Write Protection Registers
To prevent any single software error that may corrupt USART behavior, certain address spaces
can be write-protected by setting the WPEN bit in the USART Write Protect Mode Register
(WPMR).
If a write access to the protected registers is detected, then the WPVS flag in the USART Write
Protect Status Register (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 USART Write Protect Mode Register (WPMR) with the
appropriate access key, WPKEY.
The protected registers are:
•
•
•
•
•
•
•
”Mode Register” on page 411
”Baud Rate Generator Register” on page 421
”Receiver Time-out Register” on page 422
”Transmitter Timeguard Register” on page 423
”” on page 424
”” on page 424
”Manchester Configuration Register” on page 84
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