Microchip Technology ATtiny202/402 AVR Microcontrollers

Microchip Technology ATtiny202/402 AVR® 8-bit Microcontrollers feature Core Independent Peripherals and picoPower® technology. These Microchip MCUs use high-performance and low-power AVR Reduced Instruction Set Computer (RISC) architecture. The ATtiny202/402 MCUs run up to 20MHz with up to 2/4kB flash, 128/256B of SRAM, and 64/128B of EEPROM in an 8-pin package. These MCUs employ a flexible and low-power architecture that includes an Event system, SleepWalking, accurate analog features, and advanced peripherals. The ATtiny202/402 MCUs offer single-cycle I/O access, a two-level interrupt controller, and a two-cycle hardware multiplier.


  • CPU
    • AVR 8-bit CPU
    • Runs at up to 20MHz
    • Single-cycle I/O access
    • Two-level interrupt controller
    • Two-cycle hardware multiplier
  • Memories
    • 2/4kB in-system self-programmable flash memory
    • 64/128B EEPROM
    • 128/256B SRAM
    • 10,000 flash/100,000 EEPROM write/erase cycles
    • 20 years of data retention at 85°C 
  • -40°C to 105°C temperature range
  • System
    • Power-On Reset (POR)
    • Brown-Out detection (BOD)
    • Clock options
      • 16/20MHz low-power internal RC oscillator
      • 32.768kHz ultra-low-power (ULP) internal RC oscillator
      • External clock input
    • Single-pin Unified Program Debug Interface (UPDI) 
  • I/O packages
    • 6 programmable I/O lines
    • 8-pin SOIC150

ATtiny202/402 MCUs Block Diagram

Block Diagram - Microchip Technology ATtiny202/402 AVR Microcontrollers

ATtiny202/402 MCUs Pin Diagram

Microchip Technology ATtiny202/402 AVR Microcontrollers
Published: 2018-10-09 | Updated: 2022-12-01