AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 622

• Manufacturer Part Number: AT32UC3C1512C Automotive
• Manufacturer: Atmel Corporation

25.6.16
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:
9166C–AVR-08/11
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”Mode Register” on page 626
”Baud Rate Generator Register” on page 638
”Receiver Time-out Register” on page 639
”Transmitter Timeguard Register” on page 640
”FI DI RATIO Register” on page 641
”IrDA FILTER Register” on page 643
”Manchester Configuration Register” on page 644
Write Protection Registers
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