AT32UC3L-EK Atmel, AT32UC3L-EK Datasheet - Page 311
![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
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17. Frequency Meter (FREQM)
17.1
17.2
17.3
Figure 17-1. Frequency Meter Block Diagram
17.4
17.4.1
32099F–11/2010
Features
Overview
Block Diagram
Product Dependencies
Power Management
REFSEL
CLKSEL
Rev: 3.0.1.1
•
•
•
•
The Frequency Meter (FREQM) can be used to accurately measure the frequency of a clock by
comparing it to a known reference clock.
In order to use this module, other parts of the system must be configured correctly, as described
below.
The device can enter a sleep mode while a measurement is ongoing. However, make sure that
neither CLK_MSR nor CLK_REF is stopped in the actual sleep mode. FREQM interrupts can
wake up the device from sleep modes when the measurement is done, but only from sleep
modes where CLK_FREQM is running. Please refer to the Power Manager chapter for details.
Accurately measures a clock frequency
Selectable reference clock
A selectable clock can be measured
Ratio can be measured with 24-bit accuracy
CLK_MSR
CLK_REF
Counter
REFNUM,
Timer
START
START
VALUE
Trigger
AT32UC3L016/32/64
ISR
311
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