ATSAME70Q21B-CN

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The ATSAME70Q21B-CN, a microcontroller from Microchip, is a low power and high performance ARM Cortex-M7 based MCU, enabling the ultimate development of embedded systems. It is designed with various peripherals and high-speed interfaces to meet the requirements of modern embedded systems. With the possibility of using both flash and SRAM memories and the implementation of the ARM Cortex-M7 core, the ATSAME70Q21B-CN is one of the most powerful microcontrollers available today.

Application field

Due to its advantages, the ATSAME70Q21B-CN is known to be used in a wide range of applications, such as consumer electronics, medical, home automation, industrial automation, and automotive. Specifically, it is often used for embedded systems that require a high-performance processor, such as those that involve digital signal processing, motor control and communication between systems. Due to its extended temperature range and a watchdog timer, it is also suitable for applications that require reliable non-stop operation.

Working Principle

The ATSAME70Q21B-CN microcontroller implements a multi-layer bus matrix for its on-chip communication which is called eXtended External Bus Matrix (XEM). The XEM connects all system components, such as processor core, embedded memories and peripherals. Every component is connected to the bus matrix with a slave interface, allowing multiple peripheral access to the system bus with just one request. This allows multiple independent peripheral access to different system components without blocking each other.

The core itself is the ARM Cortex-M7, a high-performance processor-core which offers three stages of pipelining for maximum throughput, improved performance and worst-case cache misses. The core also supports up to 256 KB of On-Chip flash memory and 256 kB of SRAM memory. It also offers two internal clock domains: system and peripheral.

On top of the high-speed processor core, the ATSAME70Q21B-CN has various peripherals, such as 10/100 Mbps Ethernet MAC, Quad SPI, High Speed USB 2.0 On-The-Go, an Analog to Digital Converter, Direct Memory Access Controller, Capacitive Touch Controller, General Purpose Timers, and a 16-Channel pulse width Modulator. All these components can be used to create a variety of embedded systems.

Lastly, the ATSAME70Q21B-CN comes with safety features for reliable operation, such as a Watchdog Timer, Debug Joystick and Dual Data Transfer Unit. Additionally, the device is ECC-protected, so data can be stored reliable and securely. All these features together make the ATSAME70Q21B-CN one of the most powerful and reliable microcontrollers for embedded systems.

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