ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 909

• 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

36.7.30
Name:
Address:
Access:
• WPCMD: Write Protect Command
This command is performed only if the WPKEY value is correct.
0 = Disable the Write Protect SW of the register groups of which the bit WPRGx is at 1.
1 = Enable the Write Protect SW of the register groups of which the bit WPRGx is at 1.
2 = Enable the Write Protect HW of the register groups of which the bit WPRGx is at 1.
3 = No effect.
Note:
• WPRGx: Write Protect Register Group x
0 = The WPCMD command has no effect on the register group x.
1 = The WPCMD command is applied to the register group x.
• WPKEY: Write Protect Key
Should be written at value 0x50574D (“PWM” in ASCII). Writing any other value in this field aborts the write operation of the
WPCMD field. Always reads as 0.
List of register groups:
6500C–ATARM–8-Feb-11
• Register group 0:
• Register group 1:
• Register group 2:
WPRG5
–
–
–
–
–
31
23
15
7
“PWM Clock Register” on page 880
“PWM Disable Register” on page 882
“PWM Sync Channels Mode Register” on page 888
“PWM Channel Mode Register” on page 916
“PWM Stepper Motor Mode Register” on page 908
Only a hardware reset of the PWM controller can disable the Write Protect HW.
PWM Write Protect Control Register
WPRG4
30
22
14
PWM_WPCR
0x400200E4
6
Write-only
WPRG3
29
21
13
5
WPRG2
28
20
12
4
WPKEY
WPKEY
WPKEY
WPRG1
27
19
11
3
WPRG0
26
18
10
2
SAM3S Preliminary
25
17
9
1
WPCMD
24
16
8
0
909