ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 858

• 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

37.13.18 HSMCI Write Protect Mode Register
Name:
Address:
Access:
• WP_EN: Write Protection Enable
0 = Disables the Write Protection if WP_KEY corresponds to 0x4D4349 (“MCI’ in ASCII).
1 = Enables the Write Protection if WP_KEY corresponds to 0x4D4349 (“MCI’ in ASCII).
• WP_KEY: Write Protection Key password
Should be written at value 0x4D4349 (ASCII code for “MCI”). Writing any other value in this field has no effect.
Protects the registers:
858
•
•
•
•
•
•
“HSMCI Mode Register” on page 833
“HSMCI Data Timeout Register” on page 835
“HSMCI SDCard/SDIO Register” on page 836
“HSMCI Completion Signal Timeout Register” on page 842
“HSMCI DMA Configuration Register” on page 856
“HSMCI Configuration Register” on page 857
31
23
15
7
SAM3U Series
30
22
14
HSMCI_WPMR
0x400000E4
Read-write
6
29
21
13
5
WP_KEY (0x4D => “M”)
WP_KEY (0x43 => C”)
WP_KEY (0x49 => “I”)
28
20
12
4
27
19
11
3
26
18
10
2
25
17
9
1
6430D–ATARM–25-Mar-11
WP_EN
24
16
8
0