ATSAMD21E15L-AF

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ATSAMD21E15L-AF Application Field and Working Principle

The Atmel SAM D21E15L-AF is a low power, cost-effective microcontroller family that provides various features and functionalities to meet the needs of various applications. The Atmel SAM D21E15L-AF is designed to be used in an embedded environment in application fields such as medical, industrial control, automotive, and home & building automation.

The SAM D21E15L-AF features an ARM Cortex-M0+ processor core and has on-chip features such as a 280KB of non-volatile Flash memory, 32KB of SRAM in dual-bank mode, up to 4KB of integrated EEPROM, and peripherals such as a 12-bit analog-to-digital (ADC) converter, four timer/counters, two 32-bit wide Timer/Counters for control, a real-time clock (RTC) peripheral with integrated counter and calendar functions, a 10-bit high-speed Pulse Width Modulator (PWM), an LCD controller, and AES encryption.

Core

The SAM D21E15L-AF is based on the ARM Cortex-M0+ processor core. The ARM Cortex-M0+ is a 32-bit processor that is designed for low power applications, including microcontrollers and digital signal controllers. The ARM Cortex-M0+ core is capable of executing up to 1.25 DMIPS/MHz, and operates on a single-cycle core at a maximum frequency of 32 MHz. The core also features an integrated Memory Protection Unit (MPU) to ensure secure operation and memory protection.

Peripherals

The Atmel SAM D21E15L-AF features a variety of peripherals to cater to a variety of applications. These include a 12-bit A/D converter, four timer/counters, a 32-bit wide Timer/Counters for control, a real-time clock (RTC) peripheral with integrated counter and calendar functions, a 10-bit high-speed Pulse Width Modulator (PWM), and an LCD controller.

The 12-bit A/D converter is capable of converting up to 16 analog-to-digital (AD) inputs with a sampling rate of up to 500 kHz. The four timer/counters include three 8-bit general purpose Counter/Timers and one 16-bit Counter/Timer with a PWM output. The 32-bit Timer/Counter features up to four channels. The real-time clock (RTC) peripheral provides accurate timekeeping, and also supports an internal calendar with multiple alarms and interrupts, Automatic Periodic Update and Automatic TimeSync. The LCD controller can be used to display text, numbers, and graphical images. Finally, the 10-bit PWM can be used to provide variable duty cycle pulses and is used in a wide range of applications, including LED dimming and motor control.

Flash Memory

The Atmel SAM D21E15L-AF features a large amount of Flash Memory with a size of up to 280KB. The Flash Memory is used for storing code and data that can be executed by the core. In addition, the Flash Memory also supports In-System Programming (ISP) and In-Application Programming (IAP) functions.

Connectivity

The Atmel SAM D21E15L-AF features several connectivity options, including a 10/100 Ethernet MAC, a USB 2.0 Device controller, an asynchronous serial controller (UART) with hardware flow control, and an I2C interface. The Ethernet MAC provides a 10/100Mbit/s connection and supports Wake-on-LAN (WoL) and Power-over-Ethernet (PoE) functions. The USB 2.0 Device controller supports up to four endpoints and peripheral speed control, and is capable of supporting a wide range of devices, including keyboards, mice, and joysticks. The UART can be used for applications such as RS-232 and ISO-7816 protocol communication, as well as for purposes such as debugging, debugging, and communication with a modem. Finally, the I2C interface is used to support communication between multiple chips and sensors.

Security

The Atmel SAM D21E15L-AF provides a secure execution environment through its ARM® Cortex-M0+ processor core and its advanced peripheral set. The core features an integrated Memory Protection Unit (MPU) to ensure secure execution and memory protection. Additionally, the SAM D21E15L-AF provides multi-level code and data read/write protection against malicious code. Furthermore, the SAM D21E15L-AF provides an AES encryption unit for secure wireless communication, such as Bluetooth and Zigbee.

Conclusion

The Atmel SAM D21E15L-AF is a low-power microcontroller family that provides a variety of features and functionalities to meet the needs of embedded applications. It is based on the ARM Cortex-M0+ processor core, and provides a variety of peripherals, including a 12-bit A/D converter, four timer/counters, three 8-bit General Purpose Counter/Timers, one 16-bit Counter/Timer with a PWM output, a real-time clock (RTC) peripheral with integrated counter and calendar functions, a 10-bit PWM, and an LCD controller. It also features up to 280KB of non-volatile Flash memory, 32KB of SRAM in dual-bank mode, and up to 4KB of Flash. The SAM D21E15L-AF also supports In-System Programming (ISP) and In-Application Programming (IAP). Connectivity options include a 10/100 Ethernet MAC, a USB 2.0 Device controller, an asynchronous serial controller (UART), and an I2C interface. Finally, the SAM D21E15L-AF also provides an AES encryption unit for secure wireless communication.

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