ATtiny40 Atmel Corporation, ATtiny40 Datasheet - Page 213

• Manufacturer Part Number: ATtiny40
• Manufacturer: Atmel Corporation

Specifications of ATtiny40

• Flash (kbytes): 4 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 12 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: Yes
• Max I/o Pins: 18
• Ext Interrupts: 18
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.25
• 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: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

8263A–AVR–08/10
13 Timer/Counter Prescaler ....................................................................... 98
14 Analog Comparator ............................................................................. 101
15 Analog to Digital Converter ................................................................ 105
16 SPI – Serial Peripheral Interface ......................................................... 122
17 TWI – Two Wire Slave Interface .......................................................... 131
12.6
12.7
12.8
12.9
12.10
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
17.1
Output Compare Unit .......................................................................................87
Modes of Operation .........................................................................................87
Timer/Counter Timing Diagrams .....................................................................89
Accessing Registers in 16-bit Mode ................................................................90
Register Description ........................................................................................94
Prescaler Reset ...............................................................................................98
External Clock Source .....................................................................................98
Register Description ......................................................................................100
Analog Comparator Multiplexed Input ...........................................................102
Register Description ......................................................................................102
Features ........................................................................................................105
Overview ........................................................................................................105
Operation .......................................................................................................106
Starting a Conversion ....................................................................................107
Prescaling and Conversion Timing ................................................................108
Changing Channel or Reference Selection ...................................................111
ADC Noise Canceler .....................................................................................112
Analog Input Circuitry ....................................................................................112
Noise Canceling Techniques .........................................................................113
ADC Accuracy Definitions .............................................................................113
ADC Conversion Result .................................................................................116
Temperature Measurement ...........................................................................116
Register Description ......................................................................................117
Features ........................................................................................................122
Overview ........................................................................................................122
SS Pin Functionality ......................................................................................126
Data Modes ...................................................................................................127
Register Description ......................................................................................128
Features ........................................................................................................131
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