Overview

ATtiny40 is a low-power CMOS 8-bit microcontroller based on the compact AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny40 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Features

• High Performance, Low Power AVR® 8-Bit Microcontroller

• Advanced RISC Architecture

   – 54 Powerful Instructions – Most Single Clock Cycle Execution

   – 16 x 8 General Purpose Working Registers

   – Fully Static Operation

   – Up to 12 MIPS Throughput at 12 MHz

• Non-volatile Program and Data Memories

   – 4K Bytes of In-System Programmable Flash Program Memory

   – 256 Bytes Internal SRAM

   – Flash Write/Erase Cycles: 10,000

   – Data Retention: 20 Years at 85oC / 100 Years at 25oC

• Peripheral Features

   – One 8-bit Timer/Counter with Two PWM Channels

   – One 8/16-bit Timer/Counter

   – 10-bit Analog to Digital Converter

• 12 Single-Ended Channels

   – Programmable Watchdog Timer with Separate On-chip Oscillator

   – On-chip Analog Comparator

   – Master/Slave SPI Serial Interface

   – Slave TWI Serial Interface

• Special Microcontroller Features

   – In-System Programmable

   – External and Internal Interrupt Sources

   – Low Power Idle, ADC Noise Reduction, Stand-by and Power-down Modes

   – Enhanced Power-on Reset Circuit

   – Internal Calibrated Oscillator

• I/O and Packages

   – 20-pin SOIC/TSSOP: 18 Programmable I/O Lines

   – 20-pad VQFN/MLF: 18 Programmable I/O Lines

• Operating Voltage:

   – 1.8 – 5.5V

• Programming Voltage:

   – 5V

• Speed Grade

   – 0 – 4 MHz @ 1.8 – 5.5V

   – 0 – 8 MHz @ 2.7 – 5.5V

   – 0 – 12 MHz @ 4.5 – 5.5V

• Industrial Temperature Range

• Low Power Consumption

   – Active Mode:

• 200 µA at 1 MHz and 1.8V

   – Idle Mode:

• 25 µA at 1 MHz and 1.8V

   – Power-down Mode:

• < 0.1 µA at 1.8V