The ATMEGA1281-16MU is a high-performance, low-power 8-bit AVR RISC-based Microcontroller combines 128kB ISP flash memory, 8kB SRAM, 4kB EEPROM, 54 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, 16-channel 10-bit A/D converter and a JTAG interface for on-chip debugging. The device achieves a throughput of 8MIPS at 16MHz and operates between 2.7 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 the Atmel 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 non-volatile 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
● JTAG (IEEE® std. 1149.1 compliant) Interface
● QTouch® library support
● 135 Powerful instructions most single clock cycle execution
● 32 x 8 General purpose working registers
● Up to 16MIPS throughput at 16MHz
● On-chip 2-cycle multiplier
● Real-time counter with separate oscillator
● Output compare modulator
● 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
