ATAVRDISPLAYX Atmel, ATAVRDISPLAYX Datasheet - Page 158
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
ATAVRDISPLAYX
Manufacturer Part Number
ATAVRDISPLAYX
Description
KIT EVAL XMEGA DISPLAY
Manufacturer
Atmel
Specifications of ATAVRDISPLAYX
Main Purpose
*
Embedded
*
Utilized Ic / Part
*
Primary Attributes
*
Secondary Attributes
*
Silicon Manufacturer
Atmel
Silicon Family Name
ATxmega
Kit Contents
Board
Features
Temperature Sensor, Mono Speaker Via Audio Amplifier
Svhc
No SVHC (15-Dec-2010)
Core Architecture
AVR
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATAVRDISPLAYX
Manufacturer:
Atmel
Quantity:
135
- Current page: 158 of 445
- Download datasheet (6Mb)
14.7.2
14.7.3
8077H–AVR–12/09
Frequency Capture
Pulse-width Capture
Selecting the frequency capture event action, makes the enabled capture channel perform an
input capture and restart on positive edge events. This enables Timer/Counter to use capture to
measure the period or frequency of a signal directly. The capture result will be the time, T, from
the previous Timer/Counter restart and until the event occurred. This can be used to calculate
the frequency, f, of the signal:
Figure 14-10 on page 158
nal signal.
Figure 14-10. Frequency capture of an external signal
Since all capture channels uses the same Counter (CNT), only one capture channels must be
enabled at a time. If two capture channels are used with different source, the Counter will be
restarted on positive edge events from both input sources, and the result from the input capture
will have no meaning.
Selecting the pulse-width measure event action makes the enabled compare channel perform
the input capture action on falling edge events and the restart action on rising edge events. The
counter will then start at zero at every start of a pulse and the input capture will be performed at
the end of the pulse. The event source must be an I/O pin and the sense configuration for the pin
must be set up to generate an event on both edges.
ple where the pulse width is measured twice for an external signal.
f
=
external signal
events
CNT
1
-- -
T
MAX
BOT
shows an example where the Period is measured twice for an exter-
Period (T)
Figure 14-11 on page 159
XMEGA A
shows and exam-
"capture"
158
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