The ATMEGA2561-16AU is a high-performance, low-power 8-bit AVR RISC-based Microcontroller combines 256kB ISP flash memory, 8kB SRAM, 4kB EEPROM, 86 general purpose I/O lines, 32 general purpose working registers, real time counter, six flexible timers/counters with compare modes, PWM, 4 USARTs, byte oriented 2-wire serial interface, 8-channel 10-bit A/D converter and a JTAG interface for on-chip debugging. The device achieves a throughput of 16MIPS at 16MHz and operates between 4.5 to 5.5V. By executing powerful instructions in a single clock cycle, the device achieves a throughput approaching 1MIPS per MHz, balancing power consumption and processing speed. The device is manufactured using Atmel's high density nonvolatile memory technology. The on-chip ISP flash allows the program memory to be reprogrammed in-system through an SPI serial interface, by a conventional nonvolatile memory programmer, or by an on-chip boot program running on the AVR core.
- Advanced RISC architecture
- Power-on reset and programmable brown-out detection
- Internal calibrated RC oscillator
- External and internal interrupt sources
- Six sleep modes - idle, ADC noise reduction, power-save, power-down, standby and extended standby
- 135 Powerful instructions-most single clock cycle execution
- 32 x 8 General purpose working registers
- Fully static operation
- Up to 16MIPS throughput at 16MHz
- On-chip 2-cycle multiplier
- QTouch? library support
- Programmable watchdog timer with separate on-chip oscillator
- On-chip analog comparator
- Interrupt and wake-up on pin change
- Byte oriented 2-wire serial interface
- JTAG (IEEE? std. 1149.1 compliant) Interface
- Output compare modulator
- Master/Slave SPI serial interface
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