AT90PWM81-16MF Atmel, AT90PWM81-16MF Datasheet - Page 189
AT90PWM81-16MF
Manufacturer Part Number
AT90PWM81-16MF
Description
IC MCU AVR 8K FLASH ISP 32QFN
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM81-16MN.pdf
(325 pages)
Specifications of AT90PWM81-16MF
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, PWM, WDT
Number Of I /o
20
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
256 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-MLF®, QFN
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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15. Voltage Reference and Temperature Sensor
15.1
15.2
7734P–AVR–08/10
Features
On Chip voltage Reference and Temperature sensor overview
•
•
•
•
A low power band-gap reference provides AT90PWM81 with an accurate On-chip Bandgap voltage of
1.100 V (Vbg).
Then when SW1 is off and SW2/SW3 is on, the bandgap voltage is multiplied and generates the internal
reference VREF of 2.56V. This reference voltage is used as reference for the ADC, the DAC and can use
a buffer with external decoupling capacitor (when SW0 is on) to enable excellent noise performance with
minimum power consumption as shown on
The selection of the Voltage Reference for all the analog components (ADC, DAC, Comparators) is done
using the REFS1:0 bits in ADMUX register; see
For conditions using the Bandgap and the internal voltage reference, see
Reference Enable Signals and Start-up Time” on page 54
Accurate Voltage Reference of 2.56V
Internal Temperature Sensor
Possibility for Runtime Compensation of Temperature Drift in Both Voltage Reference and On Chip
Oscillators
Low Power Consumption
Figure
“ADC Multiplexer Register – ADMUX” on page
15-1.
“Bandgap and Internal Voltage
AT90PWM81
216.
189
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