ATTINY4-MAHR

Overview

The ATtiny4-MAHR is an 8-bit AVR microcontroller featuring 512 bytes of In-System Programmable Flash, 32 bytes of SRAM, and four programmable I/O lines. It operates within a voltage range of 1.8V to 5.5V and supports clock frequencies up to 12 MHz at 4.5V–5.5V. The device utilizes an enhanced RISC architecture for efficient processing and includes a 16-bit Timer/Counter with two PWM channels, a programmable watchdog timer, and an internal calibrated oscillator.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle
• Low-power CMOS technology with multiple selectable power-saving modes
• In-system programmable non-volatile memory for flexible code updates
• Integrated analog comparator and capacitive touch sensing support

Applications

• Battery-powered consumer electronics
• Simple embedded control systems
• Capacitive touch interface applications
• Industrial monitoring sensors

Procurement Notes

Verify the specific speed grade required for your operating voltage, as performance varies between 4 MHz, 8 MHz, and 12 MHz depending on the supply level. Confirm that the UDFN package dimensions align with your PCB footprint constraints. Ensure programming equipment supports the specified 5V ISP requirement if using standard in-system programming methods.

Selection Notes

Select this component when minimal pin count and low power consumption are critical. Note that unlike the ATtiny5 or ATtiny10, this variant lacks an integrated ADC. If analog signal conversion is necessary, consider alternative models within the same family. Verify that the available I/O lines meet the interface requirements for your specific application design.

Part Context

This part belongs to the ATtiny4/5/9/10 series, designed for ultra-low-cost and space-constrained environments. The 'MAHR' suffix indicates the 8-pad UDFN package type and industrial temperature rating. These devices share a common core but differ in memory size and peripheral availability, such as the presence or absence of an ADC.

Replacement Considerations

ATtiny5-MAHR

FAQ

Does the ATtiny4-MAHR include an Analog-to-Digital Converter?

No, the ATtiny4 does not include an ADC. Models like the ATtiny5 and ATtiny10 within the same series provide a 4-channel, 8-bit ADC.

What is the maximum operating frequency at 1.8V?

At a supply voltage of 1.8V to 5.5V, the maximum operating frequency is 4 MHz.