ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 539

• 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

30.7.42
Name:
Address:
Access:
Reset:
For more information on Write Protection Registers, refer to
• WPEN: Write Protect Enable
0 = Disables the Write Protect if WPKEY corresponds to 0x50494F (“PIO” in ASCII).
1 = Enables the Write Protect if WPKEY corresponds to 0x50494F (“PIO” in ASCII).
Protects the registers:
• WPKEY: Write Protect KEY
Should be written at value 0x50494F (“PIO” in ASCII). Writing any other value in this field aborts the write operation of the
WPEN bit. Always reads as 0.
6430D–ATARM–25-Mar-11
6430D–ATARM–25-Mar-11
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“PIO Controller PIO Enable Register” on page 518
“PIO Controller PIO Disable Register” on page 518
“PIO Controller Output Enable Register” on page 519
“PIO Controller Output Disable Register” on page 520
“PIO Controller Input Filter Enable Register” on page 521
“PIO Controller Input Filter Disable Register” on page 521
“PIO Multi-driver Enable Register” on page 526
“PIO Multi-driver Disable Register” on page 527
“PIO Pull Up Disable Register” on page 528
“PIO Pull Up Enable Register” on page 528
“PIO Peripheral AB Select Register” on page 529
“PIO Output Write Enable Register” on page 532
“PIO Output Write Disable Register” on page 532
31
23
15
—
7
PIO Write Protect Mode Register
30
22
14
—
PIO_WPMR
0x400E0CE4 (PIOA), 0x400E0EE4 (PIOB), 0x400E10E4 (PIOC)
Read-write
See
6
Table 30-2
29
21
13
—
5
28
20
12
—
4
WPKEY
WPKEY
WPKEY
Section 30.6.1 ”Write Protection
27
19
11
—
3
26
18
10
—
2
Registers”.
SAM3U Series
SAM3U Series
25
17
—
9
1
WPEN
24
16
8
0
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