ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 527
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
ATSAM3S-EK
Manufacturer Part Number
ATSAM3S-EK
Description
KIT EVAL FOR ATSAM3S4C
Manufacturer
Atmel
Series
SAM3Sr
Type
MCUr
Specifications of ATSAM3S-EK
Contents
Board, Cables, Power Supply
Silicon Manufacturer
Atmel
Core Architecture
ARM
Core Sub-architecture
Cortex-M3
Kit Contents
Board
Features
TFT Colour LCD Display, SD/MMC Interface
Svhc
No SVHC (15-Dec-2010)
Rohs Compliant
Yes
For Use With/related Products
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATSAM3S-EK
Manufacturer:
Atmel
Quantity:
135
- Current page: 527 of 1118
- Download datasheet (24Mb)
28.7.46
Name:
Addresses: 0x400E0EE4 (PIOA), 0x400E10E4 (PIOB), 0x400E12E4 (PIOC)
Access:
Reset:
For more information on Write Protection Registers, refer to
Interface”.
• 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:
“PIO Enable Register” on page 502
“PIO Disable Register” on page 502
“PIO Output Enable Register” on page 503
“PIO Output Disable Register” on page 504
“PIO Input Filter Enable Register” on page 505
“PIO Input Filter Disable Register” on page 505
“PIO Multi-driver Enable Register” on page 510
“PIO Multi-driver Disable Register” on page 511
“PIO Pull Up Disable Register” on page 512
“PIO Pull Up Enable Register” on page 512
“PIO Peripheral ABCD Select Register 1” on page 514
“PIO Peripheral ABCD Select Register 2” on page 515
“PIO Output Write Enable Register” on page 520
“PIO Output Write Disable Register” on page 520
“PIO Pad Pull Down Disable Register” on page 518
“PIO Pad Pull Down Status Register” on page 519
“PIO Parallel Capture Mode Register” on page 530
• 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.
6500C–ATARM–8-Feb-11
6500C–ATARM–8-Feb-11
31
23
15
—
7
PIO Write Protect Mode Register
PIO_WPMR
30
22
14
—
Read-write
See
6
Table 28-3
29
21
13
—
5
28
20
12
—
4
WPKEY
WPKEY
WPKEY
Section 28.7 ”Parallel Input/Output Controller (PIO) User
27
19
11
—
3
26
18
10
—
2
SAM3S Preliminary
SAM3S Preliminary
25
17
—
9
1
WPEN
24
16
8
0
527
527
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