ATTINY85-20SHR

Overview

The ATTINY85-20SHR is an 8-bit AVR microcontroller featuring 8 KB of in-system programmable Flash, 512 bytes of EEPROM, and 512 bytes of SRAM. It operates at a maximum clock frequency of 20 MHz within a voltage range of 2.7 V to 5.5 V. The device utilizes an EIAJ SOIC (8S2) package with tape-and-reel delivery. Key peripherals include a 10-bit ADC with four single-ended channels, two 8-bit timers/counters, and a Universal Serial Interface.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput efficiency.
• Integrated non-volatile memory with programming lock capabilities for data security.
• Supports multiple low-power operating modes including Idle, Power-down, and ADC Noise Reduction.

Applications

• Battery-powered embedded systems requiring extended operational life
• Simple sensor interface nodes utilizing the internal ADC
• Basic control logic for standalone electronic devices

Procurement Notes

Verify that the ordering suffix 'R' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm the 'H' lead finish specification matches your soldering profile requirements. Ensure the speed grade '20' aligns with your target operating frequency and supply voltage constraints.

Selection Notes

Select this variant when surface-mount manufacturing using reel-to-reel equipment is necessary. The EIAJ SOIC package offers a compact footprint suitable for space-constrained designs. This specific part number provides the standard industrial temperature range without the extended voltage support found in the 'V' series variants.

Part Context

This component belongs to the ATtiny85 family within the Microchip AVR portfolio. It shares the core architecture with the ATtiny25 and ATtiny45 but distinguishes itself through its larger 8 KB program memory capacity. The device is designed for applications needing robust processing power within a minimal pin count configuration.

Replacement Considerations

ATtiny85-20SU serves as the tube-packaged equivalent. ATtiny85-20MU is available in the QFN/MLF package type. Cross-reference the ATtiny45-20SHR if additional RAM or EEPROM capacity is not required but similar performance is needed.