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Product Detailed Parameters
- Description：IC MCU 32BIT 128MB FLASH 256QFP
- Series：SAMRH71
- Mfr：Microchip Technology
- Package：Bulk
- Core Processor：ARM® Cortex®-M7
- Core Size：32-Bit
- Speed：100MHz
- Connectivity：CANbus, Ethernet, FIFO, I2C, QSPI, SPI, UART/USART
- Peripherals：DMA, LCD, POR, PWM, WDT
- Number of I/O：194
- Program Memory Size：128KB (128K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：1.125M x 8
- Voltage - Supply (Vcc/Vdd)：3V ~ 3.6V
- Data Converters：-
- Oscillator Type：External, Internal
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：256-CQFP (36x36)
- Package / Case：256-QFP
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Overview
The Microchip SAMRH71 is a radiation-hardened Arm Cortex-M7 microcontroller designed for space applications. It operates at 100 MHz, delivering over 200 DMIPS. The device features 128 KB embedded Flash and 1.152 MB SRAM with ECC. It includes SpaceWire, MIL-STD-1553B, CAN FD, and Ethernet GMAC interfaces. Qualified to QML-V and ESCC standards, it withstands 15 krad TID and SEL > 62 MeV.cm2.mg-1.
Feature Summary
- Radiation-hardened design for high reliability in extreme environments
- Integrated SpaceWire and MIL-STD-1553B communication interfaces
- High-performance Arm Cortex-M7 core with DSP and FPU capabilities
- Comprehensive memory protection using Error Code Correction (ECC)
Applications
- Spacecraft onboard computers
- Satellite payload processing
- Avionics systems requiring MIL-STD-1553B connectivity
Procurement Notes
Verify the specific ordering suffix against the Product Selection Guide to confirm qualification level. Suffixes such as -MQ, -SV, or -SR indicate QML-Q or QML-V equivalents. Confirm package type availability, as CQFP256 is standard. Ensure compliance with required environmental testing specifications before procurement.
Selection Notes
Select based on required interface count and memory capacity. Verify that the chosen qualification level meets mission requirements. Consider software ecosystem compatibility with FreeRTOS or RTEMS. Evaluate thermal management needs for the specified operating temperature range.
Part Context
The SAMRH71 expands Microchip's portfolio of radiation-hardened Arm-based processors. It builds upon the commercial SAMV71 architecture but incorporates hardened features for space use. This allows developers to leverage existing Arm Cortex-M7 tools and libraries while meeting strict aerospace reliability standards.
Replacement Considerations
Direct replacements include other parts within the SAMRH71 family with different qualification suffixes. Cross-referencing with similar radiation-hardened MCUs requires verifying interface compatibility and pinout alignment.
