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    2. AVR

      AVR® 8-Bit RISC 單片機選型列表

      tiny AVR

      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
      ATtiny2313A 2 128 128 18 20 1.8-5.5 1 1 Yes Yes
      ATtiny2313 ATtiny2313V 2 128 128 18 20 1.8-5.5 1 1 Yes Yes

      mega AVR

      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
      ATmega328P 32 1024 2048 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
      ATmega32A 32 1024 2048 32 16 2.7-5.5 1 2 Yes Yes
      ATmega32 ATmega32L 32 1024 2048 32 16 2.7-5.5 1 2 Yes Yes
      ATmega64A 64 2048 4096 53 16 2.7-5.5 2 2 Yes Yes
      ATmega64 ATmega64L 64 2048 4096 53 16 2.7-5.5 2 2 Yes Yes
      ATmega128A 128 4096 4096 53 16 2.7-5.5 2 2 Yes Yes
      ATmega128 ATmega128L 128 4096 4096 53 16 2.7-5.5 2 2 Yes Yes
      ATmega1280 ATmega1280V 128 4096 8192 86 16 1.8-5.5 4 2 Yes Yes
      ATmega162 ATmega162V 16 512 1024 35 16 1.8-5.5 2 2 Yes Yes
      ATmega169PA 16 512 1024 54 16 1.8-5.5 1 2 Yes Yes
      ATmega169 ATmega169V 16 512 1024 53 16 1.8-5.5 1 2 Yes Yes
      ATmega169P ATmega169PV 16 512 1024 54 16 1.8-5.5 1 2 Yes Yes
      ATmega329P ATmega329PV 32 1024 2048 54 20 1.8-5.5 1 2 Yes Yes
      ATmega8515 ATmega8515L 8 512 512 35 16 2.7-5.5 1 1 Yes Yes
      ATmega8535 ATmega8535L 8 512 512 32 16 2.7-5.5 1 2 Yes Yes
      ATmega164PA 16 512 1024 32 20 1.8-5.5 1 2 Yes Yes
      ATmega164P ATmega164PV 16 512 1024 32 20 1.8-5.5 1 2 Yes Yes
      ATmega324PA 32 1024 2048 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
      ATmega644PA 64 2048 4096 32 20 1.8-5.5 1 2 Yes Yes
      AT90CAN128 128 4096 4096 53 16 2.7-5.5 2 2 Yes Yes

      xmega AVR

      Devices Flash (Kbytes) EEPROM (Kbytes) SRAM (Kbytes) I/O F.max (MHz) Vcc (V) 16bit Timers 8bit Timers ISP WDT
      ATXmega64A3 64 2 4 50 32 1.6-3.6 7 - Yes Yes
      ATXmega128A1 128 2 8 78 32 1.6-3.6 8 - Yes Yes
      ATXmega256A3 256 4 16 50 32 1.6-3.6 7 - Yes Yes

      選型范例

      • 基本要求:4K FLASH ROM,8個IO以上,8路AD,6路PWM,10個外部中斷
      • 推薦:ATmega48V ATmega48
      • 基本要求:16K FLASH ROM,50個IO口以上,超低功耗
      • 推薦:ATmega169PV ATmega169P
      • 基本要求:64K FLASH ROM,50個IO口以上,4K EEPROM,8路AD,I2C,SPI,WDT
      • 推薦:ATmega64L ATmega64
      • 基本要求:引腳兼容AT89S51/S52,16K FLASH ROM,1K EEPROM,WDT,2路USART
      • 推薦:ATmega162V ATmega162
      • 基本要求:引腳兼容AT89C2051,2K FLASH ROM,128BIT EEPROM,WDT
      • 推薦:ATtiny2313V ATtiny2313



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