ATtiny20 Atmel Corporation, ATtiny20 Datasheet - Page 221

• Manufacturer Part Number: ATtiny20
• Manufacturer: Atmel Corporation

Specifications of ATtiny20

• Flash (kbytes): 2 Kbytes
• Pin Count: 14
• Max. Operating Frequency: 12 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 5
• Hardware Qtouch Acquisition: Yes
• Max I/o Pins: 12
• Ext Interrupts: 12
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.12
• Self Program Memory: NO
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 3
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

8235B–AVR–04/11
13 Timer/Counter Prescaler ..................................................................... 105
14 Analog Comparator ............................................................................. 108
15 Analog to Digital Converter ................................................................ 112
16 SPI – Serial Peripheral Interface ......................................................... 129
17 TWI – Two Wire Slave Interface .......................................................... 138
12.6
12.7
12.8
12.9
12.10
12.11
13.1
13.2
13.3
14.1
14.2
15.1
15.2
15.3
15.4
15.5
15.6
15.7
15.8
15.9
15.10
15.11
15.12
15.13
16.1
16.2
16.3
16.4
16.5
Output Compare Units .....................................................................................83
Compare Match Output Unit ............................................................................85
Modes of Operation .........................................................................................86
Timer/Counter Timing Diagrams .....................................................................93
Accessing 16-bit Registers ..............................................................................95
Register Description ........................................................................................99
Prescaler Reset .............................................................................................105
External Clock Source ...................................................................................105
Register Description ......................................................................................107
Analog Comparator Multiplexed Input ...........................................................109
Register Description ......................................................................................109
Features ........................................................................................................112
Overview ........................................................................................................112
Operation .......................................................................................................113
Starting a Conversion ....................................................................................114
Prescaling and Conversion Timing ................................................................115
Changing Channel or Reference Selection ...................................................118
ADC Noise Canceler .....................................................................................119
Analog Input Circuitry ....................................................................................119
Noise Canceling Techniques .........................................................................120
ADC Accuracy Definitions .............................................................................120
ADC Conversion Result .................................................................................123
Temperature Measurement ...........................................................................123
Register Description ......................................................................................124
Features ........................................................................................................129
Overview ........................................................................................................129
SS Pin Functionality ......................................................................................133
Data Modes ...................................................................................................134
Register Description ......................................................................................135
ATtiny20
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