Microchip, 8bit AVR, ATtiny4 Microcontroller, 20MHz, 8 kB Flash, 6-Pin SOT-23

The Microchip ATtiny4 8-bit microcontroller is based AVR® RISC architecture. It operates on 1.8V to 5.5V voltage range. This microcontroller features 4KB of ISP Flash, 256B EEPROM, 256B 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, an 8-channel 10-bit A/D converter, a programmable gain stage (1x, 20x) for 12 differential ADC channel pairs, programmable watchdog timer with internal oscillator, an internal calibrated oscillator, and three software selectable power saving modes.

Up to 12MIPS Throughput at 12MHz
Flash Write/Erase Cycles of 10,000
Data Retention of 20 Years at 85°C / 100 Years at 25°C
QTouch® Library Support for Capacitive Touch Sensing (1 Channel)
One 16-bit Timer/Counter with Prescaler and Two PWM Channels
Programmable Watchdog Timer with Separate On-chip Oscillator
4-channel, 8-bit Analog to Digital Converter (ATtiny5/10, only)
On-chip Analog Comparator
External and Internal Interrupt Sources
Low Power Idle, ADC Noise Reduction, and Power-down Modes
Enhanced Power-on Reset Circuit
Programmable Supply Voltage Level Monitor with Interrupt and Reset
Internal Calibrated Oscillator
Temperature range between -40°C to 125°C
6-pin SOT and 8-pad UDFN package