MICROCHIP ATMEGA649V-8MU

The ATmega329/3290/649/6490 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 ATmega329/3290/649/6490 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

The Atmel AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.

The Atmel ATmega329/3290/649/6490 provides the following features: 32/64K bytes of In-System Programmable Flash with Read-While-Write capabilities, 1/2K bytes EEPROM, 2/4K byte SRAM, 54/69 general purpose I/O lines, 32 general purpose working registers, a JTAG interface for Boundary-scan, On-chip Debugging support and programming, a complete On-chip LCD controller with internal contrast control, three flexible Timer/Counters with compare modes, internal and external interrupts, a serial programmable USART, Universal Serial Interface with Start Condition Detector, an 8-channel, 10-bit ADC, a programmable Watchdog Timer with internal Oscillator, an SPI serial port, and five software selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or hardware reset. In Power-save mode, the asynchronous timer and the LCD controller continues to run, allowing the user to maintain a timer base and operate the LCD display while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except asynchronous timer, LCD controller and ADC, to minimize switching noise during ADC conversions. In Standby mode, the crystal/resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low-power consumption.

The device is manufactured using Atmel’s high density non-volatile memory technology. The On-chip In-System re-Programmable (ISP) Flash allows the program memory to be reprogrammed In-System through an SPI serial interface, by a conventional non-volatile memory programmer, or by an On-chip Boot program running on the AVR core. The Boot program can use any interface to download the application program in the Application Flash memory.

• High Performance, Low Power Atme 8-Bit Microcontroller
• Advanced RISC Architecture
  • 130 Powerful Instructions
  • Most Single Clock Cycle Execution
  • 32x8 General Purpose Working Registers
  • Fully Static Operation
  • Up to 16 MIPS Throughput at 16MHz
  • On-Chip 2-cycle Multiplier
• High Endurance Non-volatile Memory Segments
  • In-System Self-programmable Flash Program Memory
    • 32KBytes (ATmega329/ATmega3290)
    • 64KBytes (ATmega649/ATmega6490)
  • EEPROM
    • 1Kbytes (ATmega329/ATmega3290)
    • 2Kbytes (ATmega649/ATmega6490)
  • Internal SRAM
    • 2Kbytes (ATmega329/ATmega3290)
    • 4Kbytes (ATmega649/ATmega6490)
  • Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM
  • Data retention: 20 years at 85℃/100 years at 25℃
  • 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
• 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
  • 4 x 25 Segment LCD Driver (ATmega329/ATmega649)
  • 4 x 40 Segment LCD Driver (ATmega3290/ATmega6490)
  • Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
  • One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode
  • Real Time Counter with Separate Oscillator
  • Four PWM Channels
  • 8-channel, 10-bit ADC
  • Programmable Serial USART
  • Master/Slave SPI Serial Interface
  • Universal Serial Interface with Start Condition Detector
  • 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
  • Five Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and Standby
• I/O and Packages
  • 53/68 Programmable I/O Lines
  • 64-lead TQFP, 64-pad QFN/MLF, and 100-lead TQFP
• Speed Grade
  • ATmega329V/ATmega3290V/ATmega649V/ATmega6490V:
    • 0 - 4MHz @ 1.8 - 5.5V, 0 - 8MHz @ 2.7 - 5.5V
  • ATmega329/3290/649/6490:
    • 0 - 8MHz @ 2.7 - 5.5V, 0 - 16MHz @ 4.5 - 5.5V
• Temperature range: -40℃ to 85℃ Industrial
• Ultra-Low Power Consumption
  • Active Mode
    • 1MHz, 1.8V: 350μA
    • 32kHz, 1.8V: 20μA (including Oscillator)
    • 32kHz, 1.8V: 40μA (including Oscillator and LCD)
  • Power-down Mode
    • 100nA at 1.8V