ATTINY24A-SSNR

Overview

The ATTINY24A-SSNR is an 8-bit AVR RISC microcontroller featuring 2KB of In-System Programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. It operates at a maximum clock frequency of 20 MHz within the 4.5V to 5.5V supply range. The device includes one 8-bit and one 16-bit Timer/Counter with two PWM channels each, a 10-bit ADC with eight single-ended channels, and a Universal Serial Interface. It utilizes a 14-pin SOIC package.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput efficiency.
• Non-volatile memory segments including self-programmable Flash and EEPROM with specified endurance ratings.
• Integrated peripheral set comprising dual timer/counters, a 10-bit analog-to-digital converter, and a universal serial interface.
• Supports multiple low-power operating modes including Idle, ADC Noise Reduction, Standby, and Power-down.

Applications

• In-system programming via SPI port
• On-chip debug system using debugWIRE
• Pin change interrupt handling on available I/O lines

Procurement Notes

Verify that the ordering suffix 'R' corresponds to tape and reel packaging as defined in the manufacturer's documentation. Confirm the speed grade matches the required operational voltage and temperature specifications. Ensure the component complies with RoHS directives and check for specific lead finish requirements indicated by the part number codes.

Selection Notes

Select this variant when a 14-lead SOIC package is required for the ATtiny24A series. The 'N' suffix indicates industrial temperature range operation up to 105°C, while 'R' denotes tape and reel delivery. Verify that the 20 MHz speed grade aligns with the system's power supply voltage constraints.

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 core features such as the instruction set, register structure, and peripheral configurations, differing primarily in memory sizes and package options.

Replacement Considerations

ATtiny24A-SSU

FAQ

What is the function of the Universal Serial Interface (USI)?

The USI supports serial communication protocols and can be configured for SPI or I2C compatible operations using general-purpose I/O pins.

How does the device handle reset conditions?

A low level on the RESET pin generates a reset if the pulse length exceeds the minimum requirement. The pin can also be disabled as a reset input via fuse settings to function as a weak I/O pin.