The ATTINY43U-MU is a low-power 8-bit CMOS Microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny43U achieves throughputs approaching 1MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. The 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 ATtiny43U provides 4kB of In-system programmable flash, 64byte EEPROM and 256byte SRAM.
Advanced RISC architecture
123 Powerful instructions most single clock cycle execution
32 x 8 General purpose working registers
Fully static operation
QTouch? library support for capacitive touch sensing (8 channels)
Two 8-bit timers/counters with two PWM channels, each
Programmable watchdog timer with separate on-chip oscillator
On-chip analog comparator
Universal serial interface
Boost converter
DebugWIRE on-chip debug system
In-system programmable via SPI port
External and internal interrupt sources
Pin change interrupt on 16 pins
Low power idle, ADC noise reduction and power-down modes
