ATTINY40-MMH

Overview

The ATtiny40-MMH is an 8-bit AVR microcontroller featuring 4K bytes of In-System Programmable Flash, 256 bytes of SRAM, and 18 programmable I/O lines. It operates at speeds up to 12 MIPS at 12 MHz with a supply voltage range of 1.8V to 5.5V. The device includes one 8-bit Timer/Counter with two PWM channels, one 8/16-bit Timer/Counter, a 10-bit ADC with 12 single-ended channels, an on-chip analog comparator, and Master/Slave SPI and Slave TWI interfaces. It utilizes a 20-pad VQFN package.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput.
• Integrated non-volatile memory with data retention specifications for industrial environments.
• Multiple low-power operating modes including Idle, Stand-by, and Power-down.
• On-chip calibrated internal oscillator and programmable watchdog timer.

Applications

• Industrial control systems requiring robust I/O capabilities
• Battery-powered devices utilizing low power consumption modes
• Sensor interface applications using the integrated ADC

Procurement Notes

Verify the specific ordering suffix MMH corresponds to the 20-pad VQFN package and NiPdAu lead finish as documented in the official Microchip datasheet. Confirm that the Industrial temperature range (-40°C to +85°C) aligns with your operational requirements. Ensure compatibility with existing design files regarding the pinout and electrical characteristics defined for this specific variant.

Selection Notes

Select the ATtiny40-MMH when a compact 20-pad VQFN footprint is required alongside standard AVR peripheral sets. This variant provides the same core functionality as other ATtiny40 packages but differs in physical dimensions and lead finish. Consider the thermal performance of the exposed pad in the VQFN package during PCB layout.

Part Context

The ATtiny40 belongs to the tinyAVR family of 8-bit microcontrollers based on the enhanced RISC architecture. It offers a balance of processing speed and power efficiency suitable for embedded applications. The MMH designation specifically identifies the VQFN package option within the broader ATtiny40 product line.

Replacement Considerations

Direct replacements include other ATtiny40 variants such as ATtiny40-SU or ATtiny40-XU, provided the package type difference between SOIC/TSSOP and VQFN is accommodated in the hardware design. Cross-package substitution requires verifying mechanical fit and soldering processes.