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AVR单片机选型指南
作者: 发布于:2014/7/5 17:47:32 点击量:


 

Devices Flash (Kbytes) EEPROM (Bytes) SRAM (Bytes) I/O F.max (MHz) Vcc (V) 16bit Timers 8bit Timers ISP WDT
ATtiny13A 1 64 64B+32reg 6 20 1.8-5.5 -- 1 Yes Yes
ATtiny13 ATtiny13V 1 64 64B+32reg 6 20 1.8-5.5 -- 1 Yes Yes
ATtiny24A 2 128 128 12 20 1.8-5.5 1 1 Yes Yes
ATtiny24 ATtiny24V 2 128 128 12 20 1.8-5.5 1 1 Yes Yes
ATtiny44 ATtiny44V 4 256 256 12 20 1.8-5.5 1 1 Yes Yes
ATtiny84 ATtiny84V 8 512 512 12 20 1.8-5.5 1 1 Yes Yes
ATtiny25 ATtiny25V 2 128 128 6 20 1.8-5.5 -- 2 Yes Yes
ATtiny45 ATtiny45V 4 256 256 6 20 1.8-5.5 -- 2 Yes Yes
ATtiny48 4 64 256 24/28 12 1.8-5.5 1 1 Yes Yes
ATtiny88 8 64 512 24/28 12 1.8-5.5 1 1 Yes Yes
ATtiny26 ATtiny26L 2 128 128 16 16 2.7-5.5 -- 2 Yes Yes
ATtiny2313 ATtiny2313V 2 128 128 18 20 1.8-5.5 1 1 Yes Yes

 

 megaAVR
 
Devices Flash (Kbytes) EEPROM (Bytes) SRAM (Bytes) I/O F.max (MHz) Vcc (V) 16bit Timers 8bit Timers ISP WDT
ATmega48PA 4 256 512 23 20 1.8-5.5 1 2 Yes Yes
ATmega48 ATmega48V 4 256 512 23 20 1.8-5.5 1 2 Yes Yes
ATmega88PA 8 512 1024 23 20 1.8-5.5 1 2 Yes Yes
ATmega88 ATmega88V 8 512 1024 23 20 1.8-5.5 1 2 Yes Yes
ATmega168PA 16 512 1024 23 20 1.8-5.5 1 2 Yes Yes
ATmega168 ATmega168V 16 512 1024 23 20 1.8-5.5 1 2 Yes Yes
ATmega8A 8 512 1024 23 16 2.7-5.5 1 2 Yes Yes
ATmega8 ATmega8L 8 512 1024 23 16 2.7-5.5 1 2 Yes Yes
ATmega16A 16 512 1024 32 16 2.7-5.5 1 2 Yes Yes
ATmega16 ATmega16L 16 512 1024 32 16 2.7-5.5 1 2 Yes Yes
32 1024 2048 32 16 2.7-5.5 1 2 Yes Yes
  32 1024 2048 32 16 2.7-5.5 1 2 Yes Yes
64 2048 4096 53 16 2.7-5.5 2 2 Yes Yes
  64 2048 4096 53 16 2.7-5.5 2 2 Yes Yes
128 4096 4096 53 16 2.7-5.5 2 2 Yes Yes
  128 4096 4096 53 16 2.7-5.5 2 2 Yes Yes
  128 4096 8192 86 16 1.8-5.5 4 2 Yes Yes
  16 512 1024 35 16 1.8-5.5 2 2 Yes Yes
  16 512 1024 53 16 1.8-5.5 1 2 Yes Yes
  16 512 1024 54 16 1.8-5.5 1 2 Yes Yes
  32 1024 2048 54 20 1.8-5.5 1 2 Yes Yes
  8 512 512 35 16 2.7-5.5 1 1 Yes Yes
  8 512 512 32 16 2.7-5.5 1 2 Yes Yes
ATmega164P ATmega164PV 16 512 1024 32 20 1.8-5.5 1 2 Yes Yes
ATmega324P ATmega324PV 32 1024 2048 32 20 1.8-5.5 1 2 Yes Yes

 

 选型范例
 

·基本要求:4K FLASH ROM,8个IO以上,8路AD,6路PWM,10个外部中断
·推荐:ATmega48V ATmega48

·基本要求:16K FLASH ROM,50个IO口以上,超低功耗
·推荐:ATmega169PV ATmega169P

·基本要求:64K FLASH ROM,50个IO口以上,4K EEPROM,8路AD,I2C,SPI,WDT
·推荐:ATmega64L ATmega64

·基本要求:引脚兼容AT89S51/S52,16K FLASH ROM,1K EEPROM,WDT,2路USART
·推荐:ATmega162V ATmega162

·基本要求:引脚兼容AT89C2051,2K FLASH ROM,128BIT EEPROM,WDT
·推荐:ATtiny2313V ATtiny2313

 



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