ATTINY24A-MFR

Overview

The ATTINY24A-MFR is an 8-bit AVR microcontroller featuring a 20-pin VQFN package. It includes 2 KB of in-system programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. The device supports a maximum clock frequency of 20 MHz at supply voltages between 4.5 V and 5.5 V. It provides 12 general-purpose I/O lines, a 10-bit ADC with 8 single-ended channels, two PWM-capable timers, and a Universal Serial Interface (USI). Operating voltage ranges from 1.8 V to 5.5 V, with an industrial temperature range of -40°C to +85°C.

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 in-system programmable EEPROM with data retention capabilities.
• Integrated peripheral set comprising an 8-bit Timer/Counter, a 16-bit Timer/Counter with PWM channels, and a 10-bit ADC.
• Supports low-power operation through selectable Idle, ADC Noise Reduction, Standby, and Power-down modes.

Applications

• In-system programming via SPI interface
• Touch sensing interfaces using QTouch Library
• On-chip debugging via debugWIRE system

Procurement Notes

Verify the specific suffix 'MFR' corresponds to the matte tin lead finish and tape & reel packaging configuration as defined in the ordering information table. Confirm that the speed grade matches the required operating voltage and temperature range specifications for the target application environment.

Selection Notes

Select this component when a compact 20-pin form factor is required alongside 2 KB of program memory. Ensure the design operates within the 4.5 V to 5.5 V range to utilize the full 20 MHz performance capability. Consider the VQFN package thermal characteristics and soldering requirements during PCB layout.

Part Context

This part 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, peripheral modules, and power management modes, differing primarily in memory sizes and pin counts.

Replacement Considerations

ATtiny24A-MMHR

FAQ

What is the function of the USI module?

The Universal Serial Interface (USI) provides a simple serial communication protocol compatible with SPI and I2C standards, allowing flexible data transfer configurations.

How does the device handle power consumption in sleep modes?

The device offers four software-selectable power-saving modes: Idle, ADC Noise Reduction, Standby, and Power-down, which disable various components to minimize current draw while retaining necessary functionality.