ATAVRDISPLAYX Atmel, ATAVRDISPLAYX Datasheet - Page 160
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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: 160 of 445
- Download datasheet (6Mb)
14.8.1
14.8.2
14.8.3
8077H–AVR–12/09
Waveform Generation
Frequency (FRQ) Waveform Generation
Single Slope PWM Generation
The compare channels can be used for waveform generation on the corresponding port pins. To
make the waveform visible on the connected port pin, the following requirements must be
fulfilled:
Inverted waveform output can be achieved by setting the invert output bit for the port pin.
For frequency generation the period time (T) is controlled by the CCA register instead of PER,
which in this case is not in use. The Waveform Generation (WG) output is toggled on each com-
pare match between the CNT and CCA registers as shown in
Figure 14-12. Frequency Waveform Generation
The waveform generated will have a maximum frequency of half of the Peripheral clock fre-
quency (f
Extension since this only increase the resolution and not the frequency. The waveform fre-
quency (f
where N represents the prescaler divider used (1, 2, 4, 8, 64, 256, 1024, or event channel n).
For single slope PWM generation, the Period (T) is controlled by the PER, while CCx registers
control the duty cycle of the WG output.
TOM to TOP then restarts from BOTTOM. The waveform generator (WG) output is set on the
compare match between the CNT and CCx registers, and cleared at TOP.
f
FRQ
1. A waveform generation mode must be selected.
2. Event actions must be disabled.
3. The CC channels to be used must be enabled. This will override the corresponding port
4. The direction for the associated port pin must be set to output.
CNT
WG Output
=
pin output register.
------------------------------- -
2N CCA+1
FRQ
PER
(
f
PER
MAX
BOT
TOP
)is defined by the following equation:
) when CCA is set to zero (0x0000). This also applies when using the Hi-Res
)
Period (T)
Figure 14-13
Direction Change
shows how the counter counts from BOT-
Figure 14-12 on page
CNT written
XMEGA A
"update"
160.
160
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