ATTINY841-MUR

Overview

The ATTINY841-MUR is an 8-bit AVR microcontroller featuring 8K bytes of in-system programmable Flash, 512 bytes of EEPROM, and 512 bytes of SRAM. It operates at speeds up to 16 MHz with a supply voltage range of 1.7V to 5.5V. The device utilizes a 20-pad VQFN package (3x3mm) and supports industrial temperatures from -40°C to +85°C. Key peripherals include two USARTs, one SPI interface, one I2C interface, a 10-bit ADC with differential channels, and multiple timer/counters.

Feature Summary

• Advanced RISC architecture achieving up to 1 MIPS throughput per MHz
• Dual full-duplex USARTs with start frame detection capability
• High-resolution analog-to-digital converter with differential input support
• Multiple low-power operating modes including Idle and Power-down

Applications

• Battery-powered sensor nodes requiring low standby current
• Industrial control systems utilizing dual serial communication interfaces
• Data acquisition applications leveraging the high-resolution ADC
• Embedded systems requiring robust power supervision features

Procurement Notes

Verify the specific speed grade suffix matches the required clock frequency for your voltage conditions. Confirm the MUR suffix indicates the reel packaging format suitable for automated assembly processes. Ensure the component meets RoHS compliance requirements for your manufacturing environment. Cross-reference the ordering code with the manufacturer's latest documentation to confirm availability status.

Selection Notes

Select this variant when 8KB program memory is necessary compared to the 4KB ATtiny441 option. Choose the VQFN package if board space constraints require a compact footprint. Consider the dual USART feature if simultaneous serial communication is required without external multiplexing. Evaluate the 16MHz maximum speed against the target application's processing demands and power budget.

Part Context

This component belongs to the ATtiny441/841 family of 8-bit AVR microcontrollers manufactured by Microchip Technology. These devices are designed for applications needing enhanced peripheral integration within a small form factor. The family shares a common core architecture but varies in memory size and package options to suit different system requirements.

Replacement Considerations

ATtiny841-MMHR serves as a direct tape-and-reel alternative within the same package type. ATtiny841-SSUR provides equivalent functionality in a 14-lead SOIC package for through-hole or wider pitch surface mount designs.