SAM3N00B Atmel Corporation, SAM3N00B Datasheet - Page 396
SAM3N00B
Manufacturer Part Number
SAM3N00B
Description
Manufacturer
Atmel Corporation
- Current page: 396 of 752
- Download datasheet (17Mb)
26.5.13
396
396
SAM3N
SAM3N
Write Protection Registers
To prevent any single software error that may corrupt PIO behavior, certain address spaces can
be write-protected by setting the WPEN bit in the
(PIO_WPMR).
If a write access to the protected registers is detected, then the WPVS flag in the PIO Write Pro-
tect Status Register (PIO_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 PIO Write Protect Mode Register (PIO_WPMR) with the
appropriate access key, WPKEY.
The protected registers are:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
“PIO Enable Register” on page 401
“PIO Disable Register” on page 401
“PIO Output Enable Register” on page 402
“PIO Output Disable Register” on page 403
“PIO Input Filter Enable Register” on page 404
“PIO Input Filter Disable Register” on page 404
“PIO Multi-driver Enable Register” on page 409
“PIO Multi-driver Disable Register” on page 410
“PIO Pull Up Disable Register” on page 411
“PIO Pull Up Enable Register” on page 411
“PIO Peripheral ABCD Select Register 1” on page 413
“PIO Peripheral ABCD Select Register 2” on page 414
“PIO Output Write Enable Register” on page 419
“PIO Output Write Disable Register” on page 419
“PIO Pad Pull Down Disable Register” on page 417
“PIO Pad Pull Down Status Register” on page 418
“PIO Write Protect Mode Register”
11011A–ATARM–04-Oct-10
11011A–ATARM–04-Oct-10
Related parts for SAM3N00B
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Cortex M3 Flash Microcontroller Converges Performance and Simplicity
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet: