ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 350

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

24.6.5
Name:
Address:
Access:
For more details on MATRIX_WPMR, refer to
• WPEN: Write Protect ENable
0 = Disables the Write Protect if WPKEY corresponds to 0x4D4154 (“MAT” in ASCII).
1 = Enables the Write Protect if WPKEY corresponds to 0x4D4154 (“MAT” in ASCII).
Protects the entire MATRIX address space from address offset 0x000 to 0x1FC.
• WPKEY: Write Protect KEY (Write-only)
Should be written at value 0x4D4154 (“MAT”in ASCII). Writing any other value in this field aborts the write operation of the
WPEN bit. Always reads as 0.
350
31
23
15
7
–
SAM3U Series
Write Protect Mode Register
MATRIX_WPMR
0x400E03E4
Read-write
30
22
14
6
–
29
21
13
5
–
Section 24.5 “Write Protect Registers” on page
28
20
12
4
–
WPKEY
WPKEY
WPKEY
27
19
11
3
–
26
18
10
2
–
342.
25
17
9
1
–
6430D–ATARM–25-Mar-11
WPEN
24
16
8
0