ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 752

• 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

35.8.16
Name:
Address:
Access:
Reset:
• WPEN: Write Protect Enable
0 = Disables the Write Protect if WPKEY corresponds to 0x555341 (“USA” in ASCII).
1 = Enables the Write Protect if WPKEY corresponds to 0x555341 (“USA” in ASCII).
Protects the registers:
• WPKEY: Write Protect KEY
Should be written at value 0x555341 (“USA” in ASCII). Writing any other value in this field aborts the write operation of the
WPEN bit. Always reads as 0.
752
752
•
•
•
•
•
•
•
“USART Mode Register” on page 732
“USART Baud Rate Generator Register” on page 744
“USART Receiver Time-out Register” on page 745
“USART Transmitter Timeguard Register” on page 746
“USART FI DI RATIO Register” on page 747
“USART IrDA FILTER Register” on page 749
“USART Manchester Configuration Register” on page 750
31
23
15
—
7
SAM3U Series
SAM3U Series
USART Write Protect Mode Register
US_WPMR
0x400900E4 (0), 0x400940E4 (1), 0x400980E4 (2), 0x4009C0E4 (3)
Read-write
See
Table 35-16
30
22
14
—
6
29
21
13
—
5
28
20
12
—
4
WPKEY
WPKEY
WPKEY
27
19
11
—
3
26
18
10
—
2
25
17
—
9
1
6430D–ATARM–25-Mar-11
6430D–ATARM–25-Mar-11
WPEN
24
16
8
0