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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:

?