ATmega8 带有8K系统内可编程Flash存储器

Flash (Kbytes)	8
EEPROM (Kbytes)	0.5
SRAM (Bytes)	1024
Max I/O Pins	23
F.max (MHz)	16
Vcc (V)	2.7-5.5
16-bit Timers	1
8-bit Timer	2
PWM (channels)	3
RTC	Yes
SPI	1
UART	1
TWI	Yes
ISP	Yes
10-bit A/D (Channe)	6/8
Analog Comparator	Yes
Brown Out Detector	Yes
Watchdog	Yes
On Chip Oscillator	Yes
Hardware Multiplie	Yes
Interrupts	18
Ext Interrupts	2
Self Program Memor	Yes
Pb-Free Packages	TQFP 32 MLF 32 PDIP 28

8-Kbyte self-programming Flash Program Memory, 1-Kbyte SRAM, 512 Byte EEPROM, 6 or 8 Channel 10-bit A/D-converter. Up to 16 MIPS throughput at 16 Mhz. 2.7 - 5.5 Volt operation.The ATmega8 is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture.By executing powerful instructions in a single clock cycle, the ATmega8 achieves throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power consumption versus processing speed.

The ATmega8 is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega8 achieves throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power consumption versus processing speed.

ATmega8 特性

• High-performance, Low-power AVR(R) 8-bit Microcontroller
• Advanced RISC Architecture
  – 130 Powerful Instructions – Most Single-clock Cycle Execution
  – 32 x 8 General Purpose Working Registers
  – Fully Static Operation
  – Up to 16 MIPS Throughput at 16 MHz
  – On-chip 2-cycle Multiplier
• High Endurance Non-volatile Memory segments
  – 8K Bytes of In-System Self-programmable Flash program memory
  – 512 Bytes EEPROM
  – 1K Byte Internal SRAM
  – Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
  – Data retention: 20 years at 85°C/100 years at 25°C(1)
  – Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation
  – Programming Lock for Software Security
• Peripheral Features
  – Two 8-bit Timer/Counters with Separate Prescaler, one Compare Mode
  – One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode
  – Real Time Counter with Separate Oscillator
  – Three PWM Channels
  – 8-channel ADC in TQFP and QFN/MLF package Eight Channels 10-bit Accuracy
  – 6-channel ADC in PDIP package Six Channels 10-bit Accuracy
  – Byte-oriented Two-wire Serial Interface
  – Programmable Serial USART
  – Master/Slave SPI Serial Interface
  – Programmable Watchdog Timer with Separate On-chip Oscillator
  – On-chip Analog Comparator
• Special Microcontroller Features
  – Power-on Reset and Programmable Brown-out Detection
  – Internal Calibrated RC Oscillator
  – External and Internal Interrupt Sources
  – Five Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and
  Standby
• I/O and Packages
  – 23 Programmable I/O Lines
  – 28-lead PDIP, 32-lead TQFP, and 32-pad QFN/MLF
• Operating Voltages
  – 2.7 - 5.5V (ATmega8L)
  – 4.5 - 5.5V (ATmega8)
• Speed Grades
  – 0 - 8 MHz (ATmega8L)
  – 0 - 16 MHz (ATmega8)
• Power Consumption at 4 Mhz, 3V, 25°C
  – Active: 3.6 mA
  – Idle Mode: 1.0 mA
  – Power-down Mode: 0.5 μA

ATmega8 订购型号

Speed (MHz)	Power Supply	Ordering Code	Package	Operation Range
8	2.7 - 5.5	ATmega8L-8AU ATmega8L-8PU ATmega8L-8MU	32A 28P3 32M1-A	Industrial (-40°C to 85°C)
16	4.5 - 5.5	ATmega8-16AU ATmega8-16PU ATmega8-16MU	32A 28P3 32M1-A	Industrial (-40°C to 85°C)

ATmega8 应用技术支持与电子电路设计开发资源下载

1. ATMEL 爱特梅尔AVR 微控制器ATmega8 数据手册DataSheet 下载. PDF（完整版）
2. Atmel 爱特梅尔AVR 微控制器简介.PDF (编号:Tech AVR 000)MLF 32
3. 面向新手的AVR 开发工具,及基本知识.PDF(编号:Tech AVR 001)
4. 使用AVR 定时/计数器的PWM功能设计要点 .PDF
5. AVR指令集（版本：0856G–AVR–07/08）
6. AVR 微控制器汽车应用解决方案 . pdf
7. AVR 微控制器选型指南. pdf
8. ATMEL 爱特梅尔公司全线产品目录. pdf