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ATmega2561 带有256K系统内可编程Flash存储器

Flash (Kbytes)	256
EEPROM (Kbytes)	4
SRAM (Bytes)	8192
Max I/O Pins	54
F.max (MHz)	16
Vcc (V)	1.8-5.5
16-bit Timers	4
8-bit Timer	2
PWM (channels)	9
RTC	Yes
SPI	1+USART
UART	2
TWI	Yes
ISP	Yes
10-bit A/D (Channe	8
Analog Comparator	Yes
Brown Out Detector	Yes
Watchdog	Yes
On Chip Oscillator	Yes
Hardware Multiplie	Yes
Interrupts	48
Ext Interrupts	17
Self Program Memor	Yes
Pb-Free Packages	TQFP 64 MLF(VQFN) 64

256-Kbyte self-programming Flash Program Memory, 8-Kbyte SRAM, 4-KByte EEPROM, 8 Channel 10-bit A/D-converter. JTAG interface for on-chip-debug. Up to 16 MIPS throughput at 16 MHz. 1.8 - 5.5 Volt Operation.

• 64KB 系统内可编程Flash存储器：ATmega640
• 128KB 系统内可编程Flash存储器：ATmega1280
• 128KB 系统内可编程Flash存储器：ATmega1281
• 256KB 系统内可编程Flash存储器：ATmega2560
• 256KB 系统内可编程Flash存储器：ATmega2561

The ATmega640/1280/1281/2560/2561 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega640/1280/1281/2560/2561 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

ATmega2561 特性

• High Performance, Low Power AVR® 8-Bit Microcontroller
• Advanced RISC Architecture
  – 135 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
  – 64K/128K/256K Bytes of In-System Self-Programmable Flash
  – 4K Bytes EEPROM
  – 8K Bytes Internal SRAM
  – Write/Erase Cycles:10,000 Flash/100,000 EEPROM
  – Data retention: 20 years at 85°C/ 100 years at 25°C
  – 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
  Endurance: Up to 64K Bytes Optional External Memory Space
• JTAG (IEEE std. 1149.1 compliant) Interface
  – Boundary-scan Capabilities According to the JTAG Standard
  – Extensive On-chip Debug Support
  – Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
• Peripheral Features
  – Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
  – Four 16-bit Timer/Counter with Separate Prescaler, Compare- and Capture Mode
  – Real Time Counter with Separate Oscillator
  – Four 8-bit PWM Channels
  – Six/Twelve PWM Channels with Programmable Resolution from 2 to 16 Bits
  (ATmega1281/2561, ATmega640/1280/2560)
  – Output Compare Modulator
  – 8/16-channel, 10-bit ADC (ATmega1281/2561, ATmega640/1280/2560)
  – Two/Four Programmable Serial USART (ATmega1281/2561,ATmega640/1280/2560)
  – Master/Slave SPI Serial Interface
  – Byte Oriented 2-wire Serial Interface
  – Programmable Watchdog Timer with Separate On-chip Oscillator
  – On-chip Analog Comparator
  – Interrupt and Wake-up on Pin Change
• Special Microcontroller Features
  – Power-on Reset and Programmable Brown-out Detection
  – Internal Calibrated Oscillator
  – External and Internal Interrupt Sources
  – Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby,
  and Extended Standby
• I/O and Packages
  – 54/86 Programmable I/O Lines (ATmega1281/2561, ATmega640/1280/2560)
  – 64-pad QFN/MLF, 64-lead TQFP (ATmega1281/2561)
  – 100-lead TQFP, 100-ball CBGA (ATmega640/1280/2560)
  – RoHS/Fully Green
• Temperature Range:
  – -40°C to 85°C Industrial
• Ultra-Low Power Consumption
  – Active Mode: 1 MHz, 1.8V: 500 μA
  – Power-down Mode: 0.1 μA at 1.8V
• Speed Grade:
  – ATmega640V/ATmega1280V/ATmega1281V:
  0 - 4 MHz @ 1.8 - 5.5V, 0 - 8 MHz @ 2.7 - 5.5V
  – ATmega2560V/ATmega2561V:
  0 - 2 MHz @ 1.8 - 5.5V, 0 - 8 MHz @ 2.7 - 5.5V
  – ATmega640/ATmega1280/ATmega1281:
  0 - 8 MHz @ 2.7 - 5.5V, 0 - 16 MHz @ 4.5 - 5.5V
  – ATmega2560/ATmega2561:
  0 - 16 MHz @ 4.5 - 5.5V

ATmega2561 订购型号

Speed (MHz)	Power Supply	Ordering Code	Package	Operation Range
8	1.8-5.5V	ATmega2561V-8AU ATmega2561V-8MU	64A 64M2	Industrial (-40°C to 85°C)
16	4.5-5.5V	ATmega2561-16AU ATmega2561-16MU	64A 64M2	Industrial (-40°C to 85°C)

ATmega2561 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ATmega2561 数据手册DataSheet 下载. PDF（完整版）
2. ATMEL 爱特梅尔AVR 微控制器ATmega2561 数据手册DataSheet 下载. PDF（简洁版）
3. Atmel 爱特梅尔AVR 微控制器简介.PDF (编号:Tech AVR 000)MLF 32
4. 面向新手的AVR 开发工具,及基本知识.PDF(编号:Tech AVR 001)
5. 使用AVR 定时/计数器的PWM功能设计要点 .PDF
6. AVR指令集（版本：0856G–AVR–07/08）
7. AVR 微控制器汽车应用解决方案 . pdf
8. AVR 微控制器选型指南. pdf
9. ATMEL 爱特梅尔公司全线产品目录. pdf