Microchip ATTINY841-SSUR: A Comprehensive Datasheet and Application Overview

The Microchip ATTINY841-SSUR is a high-performance, low-power 8-bit microcontroller based on the AVR enhanced RISC architecture. As a member of the tinyAVR family, it packs a remarkable set of features into a small 14-pin package, making it an ideal choice for space-constrained and power-sensitive embedded applications. This article provides a detailed overview of its key specifications, core features, and potential application scenarios.

Core Architectural Features

At the heart of the ATTINY841 lies an advanced AVR CPU capable of executing single-cycle instructions, delivering a throughput approaching 1 MIPS per MHz. This efficiency allows the system designer to optimize power consumption versus processing speed. The microcontroller operates at a maximum frequency of 16 MHz and can function within a voltage range of 1.8V to 5.5V, providing flexibility for both battery-powered and line-operated designs.

Its memory configuration is robust for its class, featuring 8KB of In-System Self-Programmable Flash, 512B of EEPROM for non-volatile data storage, and 512B of SRAM.

Key Peripherals and Integration

The ATTINY841-SSUR stands out due to its rich peripheral set, which minimizes the need for external components and reduces the total system cost and board space.

Versatile Timer/Counters: It includes two 16-bit timers/counters (Timer/Counter1), one with Input Capture mode, and one 8-bit timer (Timer/Counter0). These are crucial for waveform generation, event counting, and real-time control.

Advanced Communication Interfaces: A hallmark of this device is its Universal Serial Interface (USI), which can be configured to implement SPI, I2C, or UART protocols. Furthermore, it is equipped with a True Universal Synchronous/Asynchronous Receiver/Transmitter (USART), offering robust serial communication capabilities.

Analog Capabilities: The chip integrates a 10-channel, 10-bit Analog-to-Digital Converter (ADC) and an analog comparator, making it well-suited for sensor interface applications such as temperature, light, or voltage monitoring.

Specialized Hardware: Unique features include a 10-bit Digital-to-Analog Converter (DAC) and a Differential Amplifier with Programmable Gain, which are exceptional for precise analog signal conditioning directly on the microcontroller.

Application Overview

The combination of processing power, low power consumption, and integrated peripherals opens a wide array of applications for the ATTINY841-SSUR:

Sensor Hub and Data Logging: Its multiple analog channels and communication interfaces allow it to act as a central node for collecting data from various sensors (e.g., thermistors, accelerometers, humidity sensors) and transmitting it to a host processor or over a network.

Consumer Electronics: Ideal for touch interface control (using its capacitive touch sensing capabilities), remote controls, LED dimming, and smart home devices due to its small size and low-power modes.

Industrial Control: The robust timers, communication modules, and analog features make it suitable for motor control, power supply management, and industrial automation systems.

Battery-Powered Devices: With its wide operating voltage and multiple sleep modes (Idle, ADC Noise Reduction, Standby, and Power-Down), it is perfect for portable, battery-operated products like wearables or environmental monitors that require long battery life.

ICGOODFIND Summary

The Microchip ATTINY841-SSUR is a highly capable and versatile microcontroller that punches well above its weight. Its powerful integration of analog and digital peripherals, including the unique differential amplifier and DAC, sets it apart from many competitors in the 8-bit space. For engineers designing compact, efficient, and cost-sensitive systems that require robust analog interfacing and communication, the ATTINY841-SSUR presents an exceptional balance of performance, features, and power economy, making it a top contender in its category.

Keywords: ATTINY841-SSUR, Low-Power Microcontroller, Analog-to-Digital Converter (ADC), Sensor Hub, Embedded Systems