ATTINY24A-SSUR

Overview

The ATTINY24A-SSUR is an 8-bit AVR microcontroller featuring 2 KB of in-system programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. It operates within a voltage range of 1.8 V to 5.5 V and supports clock frequencies up to 20 MHz at 4.5–5.5 V. The device includes one 8-bit and one 16-bit Timer/Counter with PWM channels, a 10-bit ADC with eight single-ended channels, and a Universal Serial Interface. It utilizes a 14-pin SOIC package and functions across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for efficient processing.
• Non-volatile memory segments including self-programmable Flash and EEPROM with high endurance ratings.
• Integrated peripheral set comprising dual timer/counters, a 10-bit ADC, and a Universal Serial Interface.
• Multiple low-power operating modes including Idle, ADC Noise Reduction, Standby, and Power-down.

Applications

• In-system programming via SPI interface
• On-chip debug system using debugWIRE
• Industrial temperature range applications

Procurement Notes

Verify the specific speed grade suffix against the required supply voltage and frequency specifications. Confirm the 'R' suffix indicates tape and reel packaging. Ensure the component matches the industrial temperature range requirements for the target environment. Cross-reference the ordering code with the manufacturer's current datasheet revision to confirm availability and pinout compatibility.

Selection Notes

Select this model when 2 KB of program memory and 128 bytes of data storage are sufficient for the application logic. Consider the 14-pin SOIC package for surface mount assembly constraints. Evaluate the 20 MHz maximum speed capability against the available supply voltage headroom. Review the power consumption characteristics in active versus sleep modes to ensure compliance with energy efficiency targets.

Part Context

This component belongs to the ATtiny24A/44A/84A family of low-power CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. The family shares common core features such as the 32 general-purpose working registers and similar peripheral sets, differentiated primarily by memory sizes and package options. The ATtiny24A represents the entry-level configuration within this series.

Replacement Considerations

ATtiny24A-SSU

FAQ

What is the function of the 'R' suffix in the part number?

The 'R' suffix indicates that the device is supplied in tape and reel packaging format.

How does the device handle in-system programming?

The Program memory can be re-programmed in-system through an SPI serial interface or by boot code running on the AVR core.