ATSAMD20E15B-MU

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Introduction

The ATSAMD20E15B-MU is a low power, high-performance ARM Cortex-M0+ microcontroller for embedded applications. Its voltage range is from 2.7 to 5.5 volts, power supply current is 2mA, RAM size is 8-Kbyte, flash memory size is 32-Kbyte and EEPROM is 2-Kbyte. The ATSAMD20E15B-MU offers a wide range of integration, multiple peripherals and useful features for embedded developers.

Application Field

ATSAMD20E15B-MU are widely used in embedded, industrial and consumer applications such as Internet of Things (IOT), home security systems, smart lighting, wearables, medical devices, automotive and industrial control, portable consumer appliances and so on.

For example, ATSAMD20E15B-MU can be used in smart parking system application. This application requires multiple analog inputs and high performance 32-bit microcontrollers to accurately detect free and occupied parking bays, process the sensor data and control power sources such as LEDs for signaling purposes. The ATSAMD20E15B-MU is an ideal choice for this type of application.

The ATSAMD20E15B-MU also has its uses in commercial, industrial, and consumer applications such as RFID reader, light controllers, environmental monitoring, and home automation.

Working Principle

The ATSAMD20E15B-MU is based on an ARM Cortex-M0+ core which is designed to achieve exceptional efficiency and low power consumption with small memory requirements and real-time execution. In addition, it features built-in system circuitry such as power-on reset, watch-dog timer, clock generator and programmable input/output resources. The microcontroller also includes a range of on-chip peripherals such as Timers, UART, SPI, I2C, PWM, ADC and so on.

The core of ATSAMD20E15B-MU features the low-power ARM Cortex-M0+ processor that provides efficient and deterministic real-time response. It operates at up to 48MHz with a 10-bit ADC. It also deals with power management, providing sufficient flexibility for a wide range of battery powered designs.

The high performance analog functions are based on proven peripheral controllers from the SAM family. These include a 10-bit ADC, configurable high-accuracy analog comparators, high speed DACs and configurable I/O from GPIO and PWM.

The device supports up to eight serial peripheral interfaces (SPIs) for communication between two or more devices. The SPI allows for high-speed data exchange between SAMD20 and other devices, such as flash memory, LCD displays, real time clock and UART. The SPI is configured to have a data interface width of up to 8-bits, enabling it to process data significantly faster than other serial protocols.

The device supports up to three I2C interfaces (I2C) which offer the ability to interface to over 120 external peripheral devices with a single bus line. The I2C can be used to send and receive data on up to three data channels. The I2C interface is ideal for fast read and write operations with devices, such as EEPROMs, MP3 players and SD cards, as well as communicating with IO expanders, temperature sensors, LCDs, and analog-to-digital converters.

The Universal Serial Bus (USB) offers full duplex communications with up to 200 Mbps data rates. This allows for high speed data transfer for operations such as device configuration, data archiving, file storage, music streaming and data retrieval.

The device offers up to 128KB of flash memory, allowing for large binaries and applications to be stored on the device. The flash memory is divided into four equal banks, which can be used as independent flash-programmed code images, thus enabling code to be updated with minimal effort and cost.

The ATSAMD20E15B-MU is shipped with an on-chip debug controller and provides full debug features, such as breakpoint and watchpoint capabilities. It is a significant tool for helping debugging embedded systems as it provides detailed information about what is happening in the system during execution.

The ATSAMD20E15B-MU is an efficient and low-power microcontroller for embedded applications. It offers a wide range of useful features, peripherals and integration which enables developers to create highly efficient and powerful applications in a cost effective manner.

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