ATSAMD21E18A-MU

Program Memory Type:	FLASH
Base Part Number:	ATSAMD21E18
Supplier Device Package:	32-QFN (5x5)
Package / Case:	32-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 85°C (TA)
Oscillator Type:	Internal
Data Converters:	A/D 10x12b, D/A 1x10b
Voltage - Supply (Vcc/Vdd):	1.62 V ~ 3.6 V
RAM Size:	32K x 8
EEPROM Size:	--
Series:	SAM D21E
Program Memory Size:	256KB (256K x 8)
Number of I/O:	26
Peripherals:	Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Connectivity:	I²C, LINbus, SPI, UART/USART, USB
Speed:	48MHz
Core Size:	32-Bit
Core Processor:	ARM® Cortex®-M0+
Part Status:	Active
Packaging:	Tray

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Introduction

Microcontrollers are integrated circuits that provide multiple functions in a single package. ATSAMD21E18A-MU is a low power, low cost microcontroller from Microchip that combines a high-speed ARM Cortex-M0+ processor with excellent performance and integration capabilities. It is an ideal choice for embedded applications that require low power, low cost, advanced features and high performance.

Functionality

The ATSAMD21E18A-MU microcontroller is designed for products requiring a maximum of 32KB of program memory and an operating frequency of up to 64 MHz. It also features an integrated 1x1 matrix keypad and a low power 10-bit 1 Msps ADC. In addition, the microcontroller has a low power ARM Cortex-M0+ processor and up to 32KB of flash program memory and up to 10-bit 1Msps conversion accuracy. It also includes 8KB of SRAM and 4KB of EEPROM.

Performance

The ATSAMD21E18A-MU microcontroller has a high-speed 32 bit ARM Cortex-M0+ processor core running at up to 64 MHz, which is an ideal high performance and low power processor for embedded applications. This processor combined with the integrated 1x1 matrix keypad and 10-bit 1 Msps ADC requirements are much higher than that of an 8 bit microcontroller; hence, it provides with better overall performance. With support for USB 2.0 and Low Power modes, it is ideal for applications including portable USB devices and smart appliances.

ATSAMD21E18A-MU Application Fields and Working Principle

The ATSAMD21E18A-MU microcontroller is used extensively in consumer electronics and embedded systems applications. It has a wide range of use in consumer goods such as LED lighting, LED signage, light indicators, smart speakers, digital clocks and other consumer goods. It also finds use in industrial automation and control systems including temperature, voltage, and acceleration sensors; motor control; and industrial control systems.The ATSAMD21E18A-MU microcontroller is an 8-bit device that uses a Harvard architecture, meaning it has separate memory regions for program instructions and data. The ARM Cortex-M0+ processor core is responsible for executing the user-designed programs from the flash memory. The microcontroller features an integrated matrix keypad, which allows the user to input data directly into the processor. Additionally, the integrated 10-bit 1 Msps ADC enables the processor to sample analog signals for input. The integrated 1x1 matrix keypad and 10-bit 1 Msps ADC provide the processor with an input to measure parameters such as temperature and acceleration. The processor then processes the data provided to the appropriate result. The ATSAMD21E18A-MU microcontroller also has numerous peripheral devices, such as SPI, I2C, USB, UART, I/O ports, compared mode timers/counters, cache/DMA controllers, etc. These peripheral devices are used to communicate with other microcontrollers, external RAM, and peripheral controllers. The microcontroller also supports a wide range of power modes, allowing for ultra low power peripheral devices and lower power consumption for many embedded applications. Depending on the nature of the application, the ATSAMD21E18A-MU can be used in either low-power sleep mode (OSC1), ultra low power sleep mode (OSC2), or deep sleep mode (OSC3).

Conclusion

The ATSAMD21E18A-MU microcontroller is a low power, low cost ARM Cortex-M0+ processor core. It has great features suitable for embedded applications, such as an integrated 1x1 matrix keypad and a 10-bit 1 Msps ADC. The microcontroller also supports low power modes and multiple peripheral devices, making it an ideal choice for embedded applications.

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