ATTINY45 in ATtiny Family
The ATTINY45 is a high-performance, low-power 8-bit RISC microcontroller from Microchip Technology (formerly Atmel) based on the AVR architecture. It features 4KB of in-system programmable flash memory, 256B of EEPROM, and 256B of SRAM. Designed for cost-sensitive and space-constrained applications, this sub-family provides a versatile peripheral set including a 10-bit ADC and high-speed PWM within a compact 8-pin footprint, making it a staple for simple control logic and small-scale embedded systems.
Variants in This Sub-Family
Comparing specs that differ across variants.
| Part Number | Package | Stock |
|---|---|---|
| ATTINY45-20SUR (Microchip Technology) | SOIC-8 | 16,292 |
| ATTINY45-20SU (Microchip Technology) | SOIC-8 | 21,861 |
| ATTINY45-20PU (Microchip Technology) | DIP-8 | 5,989 |
The ATTINY45 sub-family variants are primarily distinguished by their packaging options and temperature ratings. The -20PU variant offers a through-hole PDIP-8 package for prototyping and legacy boards, while the -20SU and -20SUR variants provide small outline SOIC-8 footprints for surface-mount production. Certain models like the 'SUR' suffix are specifically designated for Functional Safety (FuSa) compliance or automotive environments, meeting AEC-Q100 standards and offering broader operating temperature ranges.
