ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 455

• 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

26.16.11 PMC Master Clock Register
Name:
Address:
Access:
This register can only be written if the WPEN bit is cleared in
• CSS: Master Clock Source Selection
• PRES: Processor Clock Prescaler
• PLLADIV2: PLLA Divisor by 2
6500C–ATARM–8-Feb-11
31
23
15
–
–
–
7
–
Value
Value
0
1
2
3
0
1
2
3
4
5
6
7
PMC_MCKR
0x400E0430
Read-write
PLLADIV2
0
1
Name
SLOW_CLK
MAIN_CLK
PLLA_CLK
PLLB_CLK
Name
CLK
CLK_2
CLK_4
CLK_8
CLK_16
CLK_32
CLK_64
CLK_3
30
22
14
–
–
–
6
PLLBDIV2
PRES
29
21
13
–
–
5
Description
Slow Clock is selected
Main Clock is selected
PLLA Clock is selected
PLLB Clock is selected
Description
Selected clock
Selected clock divided by 2
Selected clock divided by 4
Selected clock divided by 8
Selected clock divided by 16
Selected clock divided by 32
Selected clock divided by 64
Selected clock divided by 3
PLLA Clock Division
PLLA clock frequency is divided by 1.
PLLA clock frequency is divided by 2.
PLLADIV2
28
20
12
–
–
4
“PMC Write Protect Mode Register” on page
27
19
11
–
–
–
3
–
26
18
10
–
–
–
–
2
SAM3S Preliminary
25
17
–
–
–
9
1
CSS
466.
24
16
–
–
–
8
0
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