特性 Features

? High Performance, Low Power AVR? 8-Bit Microcontroller

? Advanced RISC Architecture

– 120 Powerful Instructions – Most Single Clock Cycle Execution

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

– Up to 20 MIPS Througput at 20 MHz

? High Endurance Non-volatile Memory segments

– 1K Bytes of In-System Self-programmable Flash program memory

– 64 Bytes EEPROM

– 64 Bytes Internal SRAM

– Write/Erase Cycles: 10,000 Flash/100,000 EEPROM

– Data retention: 20 Years at 85°C/100 Years at 25°C (see page 6)

– Programming Lock for Self-Programming Flash & EEPROM Data Security

? Peripheral Features

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

– 4-channel, 10-bit ADC with Internal Voltage Reference

– Programmable Watchdog Timer with Separate On-chip Oscillator

– On-chip Analog Comparator

? Special Microcontroller Features

– debugWIRE On-chip Debug System

– In-System Programmable via SPI Port

– External and Internal Interrupt Sources

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

– Enhanced Power-on Reset Circuit

– Programmable Brown-out Detection Circuit with Software Disable Function

– Internal Calibrated Oscillator

? I/O and Packages

– 8-pin PDIP/SOIC: Six Programmable I/O Lines

– 10-pad MLF: Six Programmable I/O Lines

– 20-pad MLF: Six Programmable I/O Lines

? Operating Voltage: – 1.8 – 5.5V

? Speed Grade:

– 0 – 4 MHz @ 1.8 – 5.5V

– 0 – 10 MHz @ 2.7 – 5.5V

– 0 – 20 MHz @ 4.5 – 5.5V

? Industrial Temperature Range

? Low Power Consumption

– Active Mode:

? 190 μA at 1.8 V and 1 MHz

–Idle Mode:

? 24 μA at 1.8 V and 1 MHz