ATtiny40 Atmel Corporation, ATtiny40 Datasheet - Page 214

• 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

iv
ATtiny40
18 Touch Sensing ..................................................................................... 144
19 Programming Interface ........................................................................ 145
20 Memory Programming ......................................................................... 156
21 Electrical Characteristics .................................................................... 165
22 Typical Characteristics ........................................................................ 171
17.2
17.3
17.4
17.5
19.1
19.2
19.3
19.4
19.5
19.6
19.7
20.1
20.2
20.3
20.4
20.5
20.6
20.7
21.1
21.2
21.3
21.4
21.5
21.6
21.7
21.8
22.1
22.2
22.3
Overview ........................................................................................................131
General TWI Bus Concepts ...........................................................................131
TWI Slave Operation .....................................................................................137
Register Description ......................................................................................139
Features ........................................................................................................145
Overview ........................................................................................................145
Physical Layer of Tiny Programming Interface ..............................................145
Access Layer of Tiny Programming Interface ................................................149
Instruction Set ................................................................................................150
Accessing the Non-Volatile Memory Controller .............................................153
Control and Status Space Register Descriptions ..........................................153
Features ........................................................................................................156
Overview ........................................................................................................156
Non-Volatile Memories ..................................................................................157
Accessing the NVM .......................................................................................160
Self programming ..........................................................................................163
External Programming ...................................................................................163
Register Description ......................................................................................164
Absolute Maximum Ratings* .........................................................................165
DC Characteristics .........................................................................................165
Speed ............................................................................................................166
Clock Characteristics .....................................................................................167
System and Reset Characteristics ................................................................168
Analog Comparator Characteristics ...............................................................169
ADC Characteristics ......................................................................................169
Serial Programming Characteristics ..............................................................170
Supply Current of I/O Modules ......................................................................171
Current Consumption in Active Mode ............................................................172
Current Consumption in Idle Mode ................................................................175
8263A–AVR–08/10