ATTINY44A-MU Atmel, ATTINY44A-MU Datasheet - Page 283

• Manufacturer Part Number: ATTINY44A-MU
• Description: IC MCU AVR 4K FLASH 20MHZ 20QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY44A-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 12
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-MLF®, QFN
• Processor Series: ATTINY4x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI/USI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 20-ch x 10-bit
• Data Rom Size: 256 B
• A/d Bit Size: 10 bit
• A/d Channels Available: 20
• Height: 0.74 mm
• Length: 4 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Width: 4 mm
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8183C–AVR–03/11
13 Timer/Counter Prescaler ..................................................................... 113
14 USI – Universal Serial Interface .......................................................... 116
15 Analog Comparator ............................................................................. 128
16 Analog to Digital Converter ................................................................ 132
12.5
12.6
12.7
12.8
12.9
12.10
12.11
13.1
13.2
13.3
14.1
14.2
14.3
14.4
14.5
15.1
15.2
16.1
16.2
16.3
16.4
16.5
16.6
16.7
16.8
16.9
16.10
16.11
16.12
16.13
Input Capture Unit ...........................................................................................88
Output Compare Units .....................................................................................90
Compare Match Output Unit ............................................................................92
Modes of Operation .........................................................................................94
Timer/Counter Timing Diagrams ...................................................................101
Accessing 16-bit Registers ............................................................................103
Register Description ......................................................................................106
Prescaler Reset .............................................................................................113
External Clock Source ...................................................................................113
Register Description ......................................................................................114
Features ........................................................................................................116
Overview ........................................................................................................116
Functional Descriptions .................................................................................117
Alternative USI Usage ...................................................................................123
Register Descriptions ....................................................................................123
Analog Comparator Multiplexed Input ...........................................................128
Register Description ......................................................................................129
Features ........................................................................................................132
Overview ........................................................................................................132
Operation .......................................................................................................133
Starting a Conversion ....................................................................................134
Prescaling and Conversion Timing ................................................................135
Changing Channel or Reference Selection ...................................................138
ADC Noise Canceler .....................................................................................139
Analog Input Circuitry ....................................................................................139
Noise Canceling Techniques .........................................................................140
ADC Accuracy Definitions .............................................................................140
ADC Conversion Result .................................................................................142
Temperature Measurement ...........................................................................143
Register Description ......................................................................................144
ATtiny24A/44A/84A
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