ATAVRDISPLAYX Atmel, ATAVRDISPLAYX Datasheet - Page 162
![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: 162 of 445
- Download datasheet (6Mb)
14.8.5
8077H–AVR–12/09
Port override for Waveform Generation
Figure 14-14. Dual-slope Pulse Width Modulation
Using dual-slope PWM result in a lower maximum operation frequency compared to the single-
slope PWM operation.
The period register (PER) defines the PWM resolution. The minimum resolution is 2-bit
(PER=0x0003), and maximum resolution is 16-bit (PER=MAX).
The following equation can be used for calculate the exact resolution for dual-slope PWM
(R
The PWM frequency depends on the period setting (PER) and the Peripheral Clock frequency
(f
N represents the prescaler divider used (1, 2, 4, 8, 64, 256, 1024, or event channel n).
To make the waveform generation available on the port pins the corresponding port pin direction
must be set as output. The Timer/Counter will override the port pin values when the CC channel
is enabled (CCENx) and a waveform generation mode is selected.
Figure 14-15 on page 163
1, CC channel A to D will override port pin 0 to 3 output value (OUTxn) on the corresponding
port pin (Pxn). For Timer/Counter 1, CC channel A and B will override port pin 4 and 5. Enabling
inverted I/O on the port pin (INVENxn) inverts the corresponding WG output.
R
f
PWM_DS
PER
PWM_DS
PWM_DS
CNT
WG Output
), and can be calculated by the following equation:
=
):
=
------------------- -
2NPER
log
---------------------------------- -
f
PER
MAX
TOP
BOT
(
log
PER
2 ( )
+
1
)
shows the port override for Timer/Counter 0 and 1. For Timer/Counter
CCx
Period (T)
CCx=BOT
CCx=TOP
XMEGA A
"update"
"match"
162
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