ATTINY44-20PU [Microchip]

The ATtiny24/44/84 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. It achieves throughputs approaching 1 MIPS per MHz by executing powerful instructions in a single clock cycle. The device provides 2/4/8K bytes of In-System Programmable Flash, 128/256/512 bytes EEPROM, 128/256/512 bytes SRAM, 12 general purpose I/O lines, 32 general purpose working registers, an 8-bit Timer/Counter with two PWM channels, a 16-bit timer/Counter with two PWM channels, Internal and External Interrupts, a 8-channel 10-bit ADC with programmable gain stage for 12 differential ADC channel pairs, a programmable Watchdog Timer with internal oscillator, internal calibrated oscillator, and four software selectable power saving modes. The on-chip ISP Flash allows the Program memory to be re-programmed in-system through an SPI serial interface.