ATtiny40

ATtiny40
ATtiny40
# of Pins	20
Operating Voltage	1.8 to 5.5 V (4 MHz) 2.7 to 5.5 V (8 MHz) 4.5 to 5.5 V (12 MHz)
CPU	8-bit RISC
Clock Speed	4 MHz, 8 MHz, or 12 MHz (selectable)
Flash	4 KB
SRAM	256 B
EEPROM	None
Max I/O	18
Packages	SOIC-20 TSSOP-20 VQFN-20
Datasheets	Summary (PDF) Complete (PDF)

ATtiny40 is a microcontroller in the Atmel AVR family. It is available in the 20-pin SOIC, 20-pin TSSOP, or 20-pin VQFN package with a 4, 8, or 12 MHz selected clock speed. Running higher clock speeds require higher minimum operating voltages, with 1.8 volts for 4 MHz, 2.7 volts for 8 MHz, and 4.5 volts for 12 MHz. It has the following features:

• 1 SPI
• 1 I2C
• 10-bit ADC with 12 channels
• 1 analog comparator
• temperature sensor
• 2 timers
• 2 PWM
• internal RC oscillator
• watchdog