ATtiny20 Atmel Corporation, ATtiny20 Datasheet - Page 220

• 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

ii
ATtiny20
8
9
10 I/O Ports .................................................................................................. 44
11 8-bit Timer/Counter0 with PWM ............................................................ 60
12 16-bit Timer/Counter1 ............................................................................ 78
System Control and Reset .................................................................... 30
Interrupts ................................................................................................ 38
7.3
7.4
7.5
8.1
8.2
8.3
8.4
8.5
9.1
9.2
9.3
10.1
10.2
10.3
10.4
11.1
11.2
11.3
11.4
11.5
11.6
11.7
11.8
11.9
12.1
12.2
12.3
12.4
12.5
Power Reduction Register ...............................................................................27
Minimizing Power Consumption ......................................................................27
Register Description ........................................................................................28
Resetting the AVR ...........................................................................................30
Reset Sources .................................................................................................30
Internal Voltage Reference ..............................................................................33
Watchdog Timer ..............................................................................................33
Register Description ........................................................................................35
Interrupt Vectors ..............................................................................................38
External Interrupts ...........................................................................................39
Register Description ........................................................................................41
Overview ..........................................................................................................44
Ports as General Digital I/O .............................................................................45
Alternate Port Functions ..................................................................................49
Register Description ........................................................................................58
Features ..........................................................................................................60
Overview ..........................................................................................................60
Clock Sources .................................................................................................61
Counter Unit ....................................................................................................61
Output Compare Unit .......................................................................................62
Compare Match Output Unit ............................................................................64
Modes of Operation .........................................................................................65
Timer/Counter Timing Diagrams .....................................................................69
Register Description ........................................................................................71
Features ..........................................................................................................78
Overview ..........................................................................................................78
Timer/Counter Clock Sources .........................................................................80
Counter Unit ....................................................................................................80
Input Capture Unit ...........................................................................................81
8235B–AVR–04/11