ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 484
ATSAM3U-EK
Manufacturer Part Number
ATSAM3U-EK
Description
KIT EVAL FOR AT91SAM3U CORTEX
Manufacturer
Atmel
Type
MCUr
Datasheets
1.ATSAM3U-EK.pdf
(2 pages)
2.ATSAM3U-EK.pdf
(61 pages)
3.ATSAM3U-EK.pdf
(1171 pages)
4.ATSAM3U-EK.pdf
(53 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATSAM3U-EK
Manufacturer:
Atmel
Quantity:
10
- ATSAM3U-EK PDF datasheet
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28.14.10 PMC Clock Generator PLLA Register
Name:
Address:
Access:
This register can only be written if the WPEN bit is cleared in the
Possible limitations on PLLA input frequencies and multiplier factors should be checked before using the PMC.
Warning: Bit 29 must always be set to 1 when programming the CKGR_PLLAR register.
• DIVA: Divider
• PLLACOUNT: PLLA Counter
Specifies the number of Slow Clock cycles x8 before the LOCKA bit is set in PMC_SR after CKGR_PLLAR is written.
• MULA: PLLA Multiplier
0 = The PLLA is deactivated.
1 up to 2047 = The PLLA Clock frequency is the PLLA input frequency multiplied by MULA + 1.
484
DIVA
0
1
2 - 255
31
23
15
–
–
7
SAM3U Series
CKGR_PLLAR
0x400E0428
Read-write
30
22
14
–
–
6
29
21
13
1
5
Divider Selected
Divider output is 0
Divider is bypassed (DIVA=1)
Divider output is the selected clock divided by DIVA
28
20
12
–
4
MULA
DIVA
“PMC Write Protect Mode
27
19
11
–
3
PLLACOUNT
26
18
10
2
Register”.
MULA
25
17
9
1
6430D–ATARM–25-Mar-11
24
16
8
0
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