AT90PWM316-16SUR Atmel, AT90PWM316-16SUR Datasheet - Page 260
![MCU AVR 16K FLASH 16MHZ 32-SOIC](/photos/7/29/72992/313-32-soic_sml.jpg)
AT90PWM316-16SUR
Manufacturer Part Number
AT90PWM316-16SUR
Description
MCU AVR 16K FLASH 16MHZ 32-SOIC
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM216-16SU.pdf
(359 pages)
Specifications of AT90PWM316-16SUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
27
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
32-SOIC (7.5mm Width)
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOICATAVRMC200 - KIT EVAL FOR AT90PWM3 ASYNCATAVRFBKIT - KIT DEMO BALLAST FOR AT90PWM2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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22.2
22.3
260
Operation
Starting a Conversion
AT90PWM216/316
Figure 22-1. Digital to Analog Converter Block Schematic
The Digital to Analog Converter generates an analog signal proportional to the value of the DAC
registers value.
In order to have an accurate sampling frequency control, there is the possibility to update the
DAC input values through different trigger events.
The DAC is configured thanks to the DACON register. As soon as the DAEN bit in DACON reg-
ister is set, the DAC converts the value present on the DACH and DACL registers in accordance
with the register DACON setting.
Alternatively, a conversion can be triggered automatically by various sources. Auto Triggering is
enabled by setting the DAC Auto Trigger Enable bit, DAATE in DACON. The trigger source is
selected by setting the DAC Trigger Select bits, DATS in DACON (See description of the DATS
bits for a list of the trigger sources). When a positive edge occurs on the selected trigger signal,
the DAC converts the value present on the DACH and DACL registers in accordance with the
register DACON setting. This provides a method of starting conversions at fixed intervals. If the
trigger signal is still set when the conversion completes, a new conversion will not be started. If
another positive edge occurs on the trigger signal during conversion, the edge will be ignored.
Detector
Edge
DAATE
DAC High bits
VRef
DACH
DATS2
10
DATS1
Update DAC
Trigger
1
DAC
10
0
DATS0
10
DACON
DACL
DAC Low bits
-
Result
DAC
DALA
Output
Driver
DAOE
DAEN
7710E–AVR–08/10
D2A pin
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