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Home > Control / MCU > Microchip to launch its first arm-based ? kernel microcontroller - SAM

Microchip to launch its first arm-based ? kernel microcontroller - SAMV71Q21RT radiation resistant microcontroller and SAMRH71 MCU against radiation

Published time: 2019-04-30

From NewSpace to critical space missions, space application designers need to reduce design cycles and costs, while adjusting their designs to the radiation requirements of different missions.In response to this trend, Microchip Technology Inc. (Microchip Technology companies in the United States) for aerospace, recently launched the first microcontroller - based on Arm kernel ® SAMV71Q21RT radiation resistant microcontroller and SAMRH71 radiation-hardened single-chip microcomputer, the commercial off-the-shelf (COTS) Technology, low cost and large ecological system advantages and space level combination of radiation protection performance of device can be adjusted.Grade based on auto SAMV71 microcontroller make SAMV71Q21RT radiation resistant microcontroller and SAMRH71 radiation-hardened microcontroller, adopted widely used Arm ® architecture ® - M7 on a chip (SoC), the system helps to improve space system integration, in reducing the cost and improve performance.

SAMV71Q21RT and SAMRH71 allow software developers to start developing using SAMV71 COTS components before migrating to aerospace grade components, thus significantly reducing development time and cost.Both devices can use SAMV71's full software development toolchain because they share the same ecosystem, including software libraries, plate-level support packages (BSP), and first-level ports for operating systems (OS).After the initial development work is completed on the COTS devices, all software developed at this stage can be easily packaged and ported to radiation-resistant or radiation-resistant single-chip microcomputers with highly reliable laminates and astronautic-grade ceramic packages.SAMV71Q21RT radiation-resistant MCU can reuse a full set of COTS mask modules with a certain pin compatibility, so that COTS components can be immediately transplanted to compliant astronautic-class devices.

The radiation resistance of SAMV71Q21RT is the best choice for NewSpace application fields such as low-orbit earth satellite constellation and space robot, while the radiation resistance of SAMRH71 is more suitable for more important subsystems such as gyroscope and astral tracker.SAMV71Q21RT radiation resistant device can withstand the total ionization radiation dose (TID) of up to 30 Krad(Si) accumulated, and has the blocking anti-interference ability, and will not be damaged by heavy ions.For example, when SEL value does not exceed 62 /mg, SAMV71Q21RT and SAMRH71 will not be affected.

SAMRH71 anti-radiation MCU is specially designed for outer space applications, which can meet the radiation resistance requirements of the following targets:

The cumulative total ionizing radiation dose exceeded 100 Krad(Si).

No single particle event flip (SEU), and no LET exceeding /mg, no system remission.

No single particle event interrupt (SEFI) to ensure the integrity of all memory.

SAMV71Q21RT and SAMRH71 are based on the Arm cortex-m7 kernel, featuring high performance and low power consumption, which can extend the running life of space applications.In order to avoid being affected by radiation and to manage the mitigation of the system, the architectures of SAMV71Q21RT and SAMRH71 have added fault management and data integrity functions such as error correction code (ECC) memory, integrity check monitor (ICM), memory protection unit (MPU), etc.They also have CAN FD and Ethernet AVB/TSN capabilities to meet the changing needs of spatial system connectivity.To further support extraterrestrial applications, SAMRH71 is also dedicated to the SpaceWire bus and the l-std-1553 interface for controlling and implementing high-speed data management up to 200 Mbps.

Bob Vampola, vice President of aerospace and defense at Microchip, said:

As the industry's first radiation-resistant, radiation-resistant Arm cortex-m7 single-chip microcomputer, SAMV71Q21RT and SAMRH71 can be used for aerospace applications in the automotive industry to provide a time-tested SoC architecture.With Microchip's "COTS - radiation-resistant and radiation-resistant" technology, these devices can help designers start prototyping immediately at a relatively low cost and then migrate to compliant devices.

The development tools

To simplify the design process and reduce time to market, developers can use the atsamv71-xult evaluation board.The device is supported by the Atmel Studio integrated development environment (IDE) for development, debugging, and providing software libraries.By mid - 2019, two new single chip microcomputer in MPLAB ® Harmony in 3.0.


SAMRH71 with CQFP256 ceramic package has started to provide samples.SAMV71Q21RT is now in mass production with four models:

Samv71q21rt-dhb-e, using prototype grade QFP144 ceramic package.

Samv71q21rt-dhb-mq, using space-grade QFP144 ceramic package (or equivalent QMLQ package).

Samv71q21rt-dhb-sv, using space grade QFP144 ceramic package (or equivalent QMLV package).

Samv71q21rt-dhb-mq, using QFP144 plastic packaging in line with AQEC high reliability requirements.


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