ATTINY84A-MMH

Overview

The ATTINY84A-MMH 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 frequency of 20 MHz with a supply voltage range of 1.8 V to 5.5 V. The device includes 12 general-purpose I/O lines, an 8-channel 10-bit ADC with programmable gain, two timer/counters with PWM channels, and a Universal Serial Interface. It is housed in a 20-pin Very Thin Quad Flat No Lead (VQFN) package.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput efficiency.
• Non-volatile memory segments with high endurance ratings for both Flash and EEPROM data retention.
• Integrated analog peripherals including a 10-bit ADC with differential channel pairs and an on-chip analog comparator.
• Multiple software-selectable power-saving modes to optimize energy consumption during idle or low-activity periods.

Applications

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

Procurement Notes

Verify the specific ordering code against the manufacturer's official documentation to ensure correct speed grade, temperature range, and package variant. Confirm that the MMH suffix corresponds to the 20-pad VQFN package with NiPdAu lead finish as specified in the datasheet tables. Cross-reference the part number with current revision notices to account for any marking or specification updates.

Selection Notes

Select this component when an 8-bit AVR core with 8 KB Flash is required in a compact VQFN form factor. Ensure the application voltage falls within the 1.8 V to 5.5 V range compatible with the 20 MHz speed grade. Consider the industrial temperature rating and available I/O lines relative to the system design requirements.

Part Context

This device 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 peripheral features and instruction sets, differentiated primarily by memory sizes and pin counts. The ATtiny84A variant specifically provides 8 KB of Flash memory.

Replacement Considerations

ATtiny84A-MMHR