ATTINY44-20MU Atmel, ATTINY44-20MU Datasheet - Page 233
ATTINY44-20MU
Manufacturer Part Number
ATTINY44-20MU
Description
IC MCU AVR 4K FLASH 20MHZ 20-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY44-20MU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, 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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-MLF®, QFN
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
For Use With
ATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY44-20MUR
Manufacturer:
ATMEL
Quantity:
2 100
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8006K–AVR–10/10
13 Timer/Counter Prescaler ..................................................................... 115
14 USI – Universal Serial Interface .......................................................... 117
15 Analog Comparator ............................................................................. 129
16 Analog to Digital Converter ................................................................ 132
17 debugWIRE On-chip Debug System .................................................. 151
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
17.1
Compare Match Output Unit ............................................................................94
Modes of Operation .........................................................................................96
Timer/Counter Timing Diagrams ...................................................................103
Accessing 16-bit Registers ............................................................................105
Register Description ......................................................................................108
Prescaler Reset .............................................................................................115
External Clock Source ...................................................................................115
Register Description ......................................................................................116
Features ........................................................................................................117
Overview ........................................................................................................117
Functional Descriptions .................................................................................118
Alternative USI Usage ...................................................................................124
Register Descriptions ....................................................................................124
Analog Comparator Multiplexed Input ...........................................................129
Register Description ......................................................................................130
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 .................................................................................143
Temperature Measurement ...........................................................................144
Register Description ......................................................................................145
Features ........................................................................................................151
ATtiny24/44/84
iii
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