Описание
The ATmega649A 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 ATmega649A achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.
- High performance, low power ® AVR® 8-Bit Microcontroller
- Advanced RISC architecture
- 130 powerful instructions – most single clock cycle execution
- 32 × 8 general purpose working registers
- Fully static operation
- Up to 16MIPS throughput at 16MHz
- On-chip 2-cycle multiplier
- High endurance non-volatile memory segments
- In-system self-programmable flash program memory: 64Kbytes
- EEPROM: 2Kbytes
- Internal SRAM: 4Kbytes
- Write/erase cyles: 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
- QTouch® library support
- Capacitive touch buttons, sliders and wheels
- QTouch and QMatrix acquisition
- Up to 64 sense channels
- 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 × 25 segment LCD driver
- 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
- 54/69 programmable I/O lines
- 64/100-lead TQFP, 64-pad QFN/MLF, and 64-pad DRQFN
- Speed Grade:
- 0 – 16MHz @ 1.8 – 5.5V
- Temperature range:
- -40°C to 85°C industrial
- Ultra-low power consumption (picoPower® devices)
- Active mode:
- 1MHz, 1.8V: 215µA
- 32kHz, 1.8V: 8µA (including oscillator)
- 32kHz, 1.8V: 25µA (including oscillator and LCD)
- Power-down mode:
- 0.1µA at 1.8V
- Power-save mode:
- 0.6µA at 1.8V (Including 32kHz RTC)
- 750nA at 1.8V
