AT32UC3L-EK Atmel, AT32UC3L-EK Datasheet - Page 253
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
AT32UC3L-EK
Manufacturer Part Number
AT32UC3L-EK
Description
KIT EVAL AVR32 UC3 MCU
Manufacturer
Atmel
Type
MCUr
Specifications of AT32UC3L-EK
Contents
*
Silicon Manufacturer
Atmel
Core Architecture
AVR
Core Sub-architecture
UC3L
Kit Contents
Board
Features
USB / Battery Powered, Board Controller / Bootloader
Svhc
No SVHC (15-Dec-2010)
Rohs Compliant
Yes
Tool Type
Starter Kit
Cpu Core
AVR 8
Data Bus Width
8 bit
Processor Series
AT32
Processor To Be Evaluated
AT32UC3L064
Interface Type
USB, Capacitive Touch
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:
AT32UC3L-EK
Manufacturer:
Atmel
Quantity:
135
- Current page: 253 of 858
- Download datasheet (13Mb)
14.5.8
32099F–11/2010
Synchronization
If ADD is ‘1’, the prescaler frequency is increased:
Note that for these formulas to be within an error of 0.01%, it is recommended that the prescaler
bit that is used as the clock for the counter (selected by CR.PSEL) or to trigger the periodic inter-
rupt (selected by PIRn.INSEL) be bit 6 or higher.
As the prescaler and counter operate asynchronously from the user interface, the AST needs a
few clock cycles to synchronize the values written to the CR, CV, SCR, WER, EVE, EVD, PIRn,
ARn, and DTR registers. The Busy bit in the Status Register (SR.BUSY) indicates that the syn-
chronization is ongoing. During this time, writes to these registers will be discarded.
Note that synchronization takes place also if the prescaler is clocked from CLK_AST.
f
TUNED
=
f
0
⎛
⎜
⎜
⎜
⎝
1
+
------------------------------------------------------------------------------- -
roundup
AT32UC3L016/32/64
⎛
⎝
------------------- -
VALUE
256
1
⎞
⎠
⋅
(
2
EXP
)
–
1
⎞
⎟
⎟
⎟
⎠
253
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