951200601R

Overview

The Microchip SAMRH71 (951200601R) is a radiation-hardened Arm Cortex-M7 microcontroller designed for space applications. It operates at 100 MHz, delivering over 200 DMIPS performance within a CQFP256 hermetic ceramic package. The device features 128 KB embedded Flash and 1.152 MB SRAM, all with built-in Error Correction Code (ECC). Key interfaces include SpaceWire with RMAP, MIL-STD-1553B, Dual CAN FD, and Ethernet with TSN. It supports Total Ionizing Dose up to 15 krad and meets ESCC QPL requirements.

Feature Summary

• Radiation-hardened design ensuring high reliability in extreme space environments
• Integrated SpaceWire interface with RMAP support and embedded router
• High-performance Arm Cortex-M7 core with hardware floating-point unit
• Comprehensive memory protection with ECC across all embedded storage

Applications

• Spacecraft onboard computers
• Satellite payload processing systems
• Deep space mission control units
• Harsh environment industrial controllers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm qualification level. The 'R' suffix indicates Radiation Hardened Assurance status. Ensure compatibility with existing ESCC QPL requirements for your project. Confirm package availability and engineering sample status if applicable. Cross-reference part numbers with official Microchip documentation before procurement.

Selection Notes

Select this component for missions requiring deterministic execution and high radiation tolerance. The CQFP256 package provides necessary thermal and mechanical robustness. Consider the integrated SpaceWire and MIL-STD-1553B interfaces for legacy and modern space bus connectivity. Evaluate the 15 krad TID limit against mission duration and orbital constraints.

Part Context

This MCU belongs to the SAMRH71 family of radiation-hardened processors. It extends the standard SAMV7 ecosystem with enhanced reliability features. The device leverages established Arm Cortex-M7 architecture while adding space-grade interfaces and memory integrity mechanisms. It serves as a bridge between commercial off-the-shelf efficiency and aerospace durability standards.

Replacement Considerations

Direct substitutes include other SAMRH71 variants such as 951200601 or SAMRH71F20C-7GB-SV. Verify equivalent radiation hardness levels and interface compatibility. Check for identical package dimensions and pinout configurations to ensure board-level interchangeability without redesign.