ATTINY5-MAHR

Overview

The ATTINY5-MAHR is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. It features 512 bytes of In-System Programmable Flash, 32 bytes of internal SRAM, and four programmable I/O lines. The device includes a 16-bit Timer/Counter with two PWM channels, an Analog Comparator, and a four-channel 8-bit ADC. Operating voltage ranges from 1.8V to 5.5V, with speed grades up to 12MHz at 4.5V-5.5V. It supports QTouch library for capacitive touch sensing and offers multiple power-saving modes.

Feature Summary

• Supports QTouch library for capacitive touch sensing interfaces
• Includes a four-channel 8-bit Analog to Digital Converter (ADC)
• Features a 16-bit Timer/Counter with prescaler and two PWM channels
• Provides software selectable power saving modes including Idle and Power-down

Applications

• Capacitive touch sensing applications using QTouch library
• Low power embedded systems requiring analog signal acquisition
• Simple control logic utilizing PWM outputs
• Battery operated devices leveraging low power consumption modes

Procurement Notes

Verify the specific speed grade and temperature range required for your application against the ordering code specifications. Confirm package type compatibility during design-in. Check for any errata related to programming lock bits if implementing security features. Ensure ESD protection measures are followed during handling as specified in the datasheet.

Selection Notes

Select this component when a compact 8-bit MCU with integrated ADC and touch sensing support is needed. Consider the 512-byte Flash limit for program size. Evaluate power consumption requirements across different operating voltages and clock speeds. Compare with ATtiny4, ATtiny9, and ATtiny10 for memory or feature differences.

Part Context

The ATTINY5-MAHR belongs to the ATtiny4/5/9/10 family of 8-bit AVR microcontrollers manufactured by Microchip Technology (formerly Atmel). These devices share a common core architecture but differ in memory size and peripheral availability. The MAHR suffix indicates the 8-pad UDFN package variant.

Replacement Considerations

ATtiny4-MAHR: Lacks ADC functionality. ATtiny9-MAHR: Offers 1024 bytes Flash but no ADC. ATtiny10-MAHR: Provides 1024 bytes Flash and ADC. Verify pinout and memory constraints before substitution.