Radiation-hardened microcontroller processes up to 200 DMIPS


Microchip’s radiation-hardened SAMRH71 microprocessor and SAMRH707 microcontroller pack an Arm Cortex-M7 core and space connectivity interfaces. Running at up to 100 MHz, the SAMRH71 processes more than 200 Dhrystone MIPS (DMIPS), while the SAMRH707 operates at up to 50 MHz and 100 DMIPS. The SAMRH707 microcontroller also furnishes embedded analog functions.

illustration of three chips, showing the Microchip SAMRH71 microprocessor and SAMRH707 microcontroller

A rad-hard variant of Microchip’s COTS automotive SoC, the SAMRH71 microprocessor provides a combination of high-bandwidth communication interfaces and high processing power. Its SpaceWire interface has two SpaceWire ports with integrated RMAP support and embedded SpaceWire router. Other interfaces include MIL-STD-1553, CAN FD, and Ethernet with IEEE 1588 gPTP and time-sensitive networking (TSN) capabilities. The device is fully ESCC qualified with support from CNES and compliant with MIL Class V and Q high-reliability grades.

The SAMRH707 rad-hard microcontroller offers a 16-channel, 12-bit ADC and 2-channel, 12-bit DAC, along with SRAM and flash memory. Like the SAMRH71, the SAMRH707 is designed for high-level radiation performance, extreme temperatures, and high reliability. Both devices withstand a total ionizing dose of 100 krad(Si) with no single-event latch-up below an LET threshold of 62.5 MeV.cm2/mg at 125°C.

The SAMRH71 and SAMRH707 devices were developed with the support of the European Space Agency and the French space agency Centre National D’Etudes Spatiales. Housed in a 256-lead CQFP, the SAMRH71 microprocessor is available in volume production quantities with QMLQ and QMLV equivalent qualification levels. The SAMRH707 microcontroller is currently sampling in a 164-lead CQFP.

SAMRH71 product page

SAMRH707 product page

Microchip Technology

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