MCUs Increase Sensor-Node Functionality

To create highly responsive sensor nodes for cost effectiveness and ease of implementation, Microchip Technology expands its tinyAVR microcontroller MCU series to include two devices with advanced analog features and the largest memory variant in the family. Designed for reliable operation in harsh environments, the devices come with built-in safety functions.

 

Suitable for sensor applications including capacitive touch interfaces, the ATtiny3217 and ATtiny3216 integrate ADCs that enable systems to implement touch control simultaneously with other analog measurements. One ADC can be used with the Peripheral Touch Controller (PTC) for touch signal acquisition, while the second one monitors other inputs such as thermistors and pressure sensors, or both ADCs can be used for faster sampling of different types of sensors.

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Other features of the ATtiny3217 and ATtiny3216 MCUs include:

  • Improved real-time performance and accuracy: The dual ADC can be used for synchronous sampling of analog signals, such as voltage and current, thus improving the overall system real-time performance and accuracy. Additionally, the devices feature a hardware-based Event System that enables inter-peripheral communication without CPU involvement, reducing latency and ensuring faster system response. 
  • Robust and reliable performance: Both devices come with built-in safety functions to help designers detect and respond to voltage supply variations or drops, including the Power On Reset (POR), programmable Brownout Detect (BOD), Voltage Level Monitor (VLM) and Windowed Watchdog Timer (WWDT).
  • Improved noise immunity and functionality in extreme environments: The devices operate at up to 5V and come available in 125°C variants.
  • Increased functionality with more room for application code: With 32 KB of flash, designers have plenty of room for their application code while retaining a small physical footprint on the PCB.

 

The ATtiny3217 and ATtiny3216 are the latest devices in Microchip's tinyAVR family of MCUs, including the ATtiny1617 and the ATtiny817, which are optimized for performance, power efficiency and ease of use in small packages. All tinyAVR MCU series devices are supported by the Atmel Studio 7 integrated development environment (IDE) and the Atmel START code configurator. For evaluation purposes, the ATtiny3217 Xplained Pro evaluation kit is also available. For more details, visit Microchip Technology.

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