ATTINY40-SU

Overview

The Atmel ATTINY40-SU is an 8-bit AVR microcontroller housed in a 20-pin SOIC package. It features a maximum operating frequency of 12 MHz and includes 4 KB of system-in-programmable Flash memory, 256 bytes of SRAM, and 256 bytes of EEPROM. The device integrates one 10-bit Analog-to-Digital Converter (ADC), two Timer/Counter units, and supports I2C and SPI communication interfaces. It operates within a voltage range of 1.8V to 5.5V and functions across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates 4 KB of non-volatile Flash memory for program storage with high endurance capabilities.
• Includes on-chip analog-to-digital conversion for sensor signal acquisition.
• Supports serial peripheral interface protocols for data communication.
• Features low-power operation modes suitable for battery-constrained applications.

Applications

• General-purpose embedded control systems
• Sensor interface modules
• Industrial monitoring devices

Procurement Notes

Verify the manufacturer designation, as Atmel is now part of Microchip Technology. Confirm the suffix 'SU' corresponds to the specific 20-lead SOIC package variant. Ensure the component meets required environmental standards for the intended deployment environment.

Selection Notes

Select this model when a compact 8-bit solution with moderate Flash capacity is required. It is suitable for designs needing integrated ADC and standard serial interfaces without complex networking protocols. Consider pin count and package constraints during PCB layout planning.

Part Context

This component belongs to the ATtinyAVR series, designed for cost-sensitive and space-constrained applications. It utilizes the enhanced AVR RISC architecture to deliver efficient code execution. The series emphasizes low power consumption while maintaining sufficient processing capability for simple control tasks.

Replacement Considerations

The ATTINY40-XUR is a documented alternative offering identical core specifications in a TSSOP-20 package. Verify pin compatibility and software configuration requirements before substituting.