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Microchip Technology SAMRH71F20C-7GB-E
- Part No.:
- SAMRH71F20C-7GB-E
- Manufacturer:
- Microchip Technology
- Category:
- Microcontrollers
- Package:
- 625-TBGA
- Datasheet:
-
SAMRH71F20C-7GB-E.pdf
- Description:
- IC MCU 32BIT 128MB FLASH 625TBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SAMRH71F20C-7GB-E from Microchip Technology is a radiation-hardened 32-bit Arm® Cortex®-M7 microcontroller designed for on-board computing in critical aerospace missions. It operates at 100 MHz, integrates 128 KB Flash with ECC, 384 KB TCM RAM and 768 KB multiport SRAM (all with ECC), dual CAN-FD, SpaceWire, MIL-STD-1553B, and 10/100 Ethernet MAC - deployed in TFBGA625 package for high-density avionics systems.
For engineers reviewing the SAMRH71F20C-7GB-E datasheet, SAMRH71F20C-7GB-E pinout, SAMRH71F20C-7GB-E application, or SAMRH71F20C-7GB-E equivalent, key selection criteria include radiation tolerance (78 MeV·cm²/mg SEL immunity @125°C), dual PLL clock architecture, hardened external memory controller (HEMC) supporting SDRAM with ECC, and deterministic real-time peripherals including four 32-bit Timer Counters and two 16-bit PWMs with dead-time control.
Technical Context
The SAMRH71F20C-7GB-E implements the ATMX150RHA process with on-chip transient/permament error detection and correction. Its AMBA system bus supports concurrent DMA operations across six independent chip selects, enabling simultaneous access to up to 2 GB of external memory (PROM, SRAM, SDRAM) with variable data width (8–48 bits).
It features dual PLLs (one for system clock, one for peripherals), hardware scrubbing on memories, and FlexProtect Matrix for privilege-based peripheral access. The device includes dedicated safety mechanisms: Integrity Check Monitoring (ICM) using SHA, reinforced watchdog (RSWDT) on an uninterruptible monolithic clock, and clock/power failure routing to NMI controller.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M7 @ 100 MHz with FPU, MPU (16 zones), ETM trace, and Thumb-2/DSP instruction set |
| Memory | 128 KB Flash (ECC, 2-bit correction), 384 KB TCM RAM (ECC, 1-bit correction), 768 KB multiport SRAM (ECC, 1-bit correction) |
| Radiation Hardness | No SEL below 78 MeV·cm²/mg @125°C; TID immunity to 100 krad(Si) per ESCC-22900 |
| Peripherals | 1× 10/100 Ethernet MAC (IEEE 1588 PTP, AVB), 2× CAN-FD, 2× SpaceWire ports (200 Mbps each), 1× MIL-STD-1553B interface |
| Timing & Safety | Dual PLL clock generation, RTC with Gregorian calendar & calibration, RSWDT on independent clock, CPU frequency monitor |
| Package & Environment | TFBGA625 (625-ball), -55°C to +105°C operating range, VDDIO: 3.0–3.6 V, VDDCORE: 1.65–1.95 V |
Pinout & Package
SamRH71F20C-7GB-E is housed in a 625-ball TFBGA package (1.0 mm pitch, 27 mm × 27 mm body) optimized for high I/O density and thermal performance in space-constrained avionics modules. Pin assignment follows Microchip's standardized signal multiplexing scheme for aerospace-grade routing integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO_0 to VDDIO_15 | IO Power Supply | 16 dedicated 3.0–3.6 V supply pins for I/O banks, enabling independent voltage domain control and noise isolation |
| VDDCORE, VDDPLLA, VDDPLLB | Core & PLL Power | Separate 1.65–1.95 V supplies for core logic, PLLA (system clock), and PLLB (peripheral clock) to minimize coupling noise |
| NRST | Asynchronous Reset | Active-low reset input with internal pull-up; triggers full system reset including debug and clock domains |
| CLKIN, XIN/XOUT | External Clock Inputs | Supports 3–20 MHz crystal/resonator for main oscillator; includes failure detection circuitry for fault-tolerant timing |
| SDRAM_DQ0–DQ31 | SDRAM Data Bus | 32-bit bidirectional data interface to external SDRAM with embedded ECC support via HEMC controller |
| SW0–SW7 | SpaceWire Interface | Dedicated differential pairs for SpaceWire link 0 (SW0+/−) and link 1 (SW1+/−); supports RMAP protocol and embedded router |
Key Features
| Feature | Design Value |
|---|---|
| Hardened External Memory Controller (HEMC) | Enables direct interfacing to SDRAM, PROM, and SRAM with variable data width (8–48 bits) and built-in ECC handling |
| Concurrent AMBA Bus with XDMAC | 64-channel central DMA controller allows zero-CPU-overhead transfers between peripherals, memories, and external interfaces |
| Dual PLL Clock Architecture | Independent PLLA (system clock) and PLLB (peripheral clock) enable precise frequency scaling and jitter isolation for mixed-signal subsystems |
| SpaceWire + MIL-STD-1553B Integration | On-die dual-port SpaceWire (200 Mbps) and redundant 1553B bus controller/terminal eliminate need for external protocol bridges |
| FlexProtect Security Matrix | Hardware-enforced privilege separation for peripheral access, preventing unauthorized register writes or memory-mapped I/O manipulation |
Applications
| Avionics Flight Computer | Satellite Onboard Data Handler |
|---|---|
Use Scenario: Real-time telemetry processing, command execution, and autonomous fault response in LEO satellite platforms. IC Role / Device Role / Timing Role: Primary flight computer MCU executing deterministic control loops, managing SpaceWire sensor networks, and synchronizing time-critical payloads via IEEE 1588 PTP. Use Value: Radiation-hardened memory subsystem (100 krad TID, 78 MeV·cm²/mg SEL) ensures uninterrupted operation in Van Allen belt crossings without reboots or data corruption. |
Use Scenario: Consolidated data acquisition, storage, and downlink coordination across multiple scientific instruments aboard deep-space probes. IC Role / Device Role / Timing Role: Central data handler interfacing with 1553B bus for legacy subsystems, QSPI for boot flash, and multiport SRAM for burst-mode instrument buffering. Use Value: 768 KB ECC-protected multiport SRAM enables simultaneous read/write from Ethernet, SpaceWire, and CAN-FD without arbitration stalls or memory contention. |
| Launch Vehicle Guidance Unit | Aerospace Test Bench Controller |
Use Scenario: Closed-loop guidance, navigation, and control (GNC) during ascent phase where EMI and radiation-induced transients are highest. IC Role / Device Role / Timing Role: Deterministic real-time controller running PID algorithms on four 32-bit Timer Counters with quadrature decoder support for inertial measurement units. Use Value: Dual CAN-FD interfaces provide redundant vehicle bus communication with bit-rate switching (up to 5 Mbps), while hardware dead-time generators ensure safe gate drive for thruster PWM outputs. |
Use Scenario: Hardware-in-the-loop (HIL) simulation of spacecraft subsystems under accelerated radiation and thermal stress conditions. IC Role / Device Role / Timing Role: Reference platform for validating radiation effects on firmware behavior, leveraging embedded ETM trace and RSWDT for failure capture and recovery analysis. Use Value: Built-in Integrity Check Monitoring (ICM) with SHA-256 continuously validates Flash and SRAM contents, enabling automated corruption detection and rollback to known-good firmware images. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rad-hard microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RTAX2000S-1DQG | FPGA-based rad-hard platform (Actel/ Microsemi); no integrated Arm core, requires external processor soft-core or hard IP integration | Targeted at highly configurable logic-intensive tasks (e.g., custom packet filtering, protocol translation), not deterministic real-time control | Choose RTAX2000S-1DQG when programmable logic density and I/O flexibility outweigh need for native Arm software ecosystem and deterministic interrupt latency. |
| LEON5FT-250-RTAX4000D | Rad-hard SPARC V8 processor (Gaisler); 150 MHz max, 256 KB on-chip RAM, no integrated SpaceWire or 1553B PHY | Requires external PHYs and bridge ICs for SpaceWire/1553B, increasing BOM count and board area vs. SAMRH71F20C-7GB-E's integrated interfaces | Choose LEON5FT-250-RTAX4000D only if existing SPARC toolchain and RTEMS OS porting investment justifies added interface complexity and lower memory bandwidth. |
Compared with RTAX2000S-1DQG and LEON5FT-250-RTAX4000D, SAMRH71F20C-7GB-E delivers native Arm Cortex-M7 software compatibility, integrated radiation-hardened SpaceWire/1553B physical layers, and higher memory bandwidth (1.15 MB/s TCM + 768 KB multiport SRAM), reducing system-level design risk and qualification effort for new avionics programs.
Availability
SAMRH71F20C-7GB-E is available at Aetrix Electronics and suitable for aerospace flight computers, satellite onboard data handlers, and launch vehicle guidance units requiring stable component supply, long-term obsolescence management, and full ESCC/QML-V traceability.
Supply support for SAMRH71F20C-7GB-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and FPGA solutions for aerospace, defense, automotive, and industrial markets.
The SAMRH71 product line was developed specifically for radiation-tolerant, mission-critical on-board computing - integrating hardened memories, deterministic peripherals, and aerospace-specific protocols (SpaceWire, 1553B, CAN-FD) into a single Arm Cortex-M7 SoC.
FAQ
What is the radiation hardness specification for SAMRH71F20C-7GB-E?
The SAMRH71F20C-7GB-E is qualified to ESCC-22900 standards with total ionizing dose (TID) immunity up to 100 krad(Si) and no single-event latch-up (SEL) below a linear energy transfer (LET) of 78 MeV·cm²/mg at 125°C. These values are verified for Revision E silicon, which SAMRH71F20C-7GB-E implements. SEU mitigation is provided via ECC on all embedded memories (Flash, TCM, multiport SRAM).
Does SAMRH71F20C-7GB-E support IEEE 1588 Precision Time Protocol?
Yes, SAMRH71F20C-7GB-E includes hardware-accelerated IEEE 1588 Precision Time Protocol (PTP) support within its 10/100 Ethernet MAC (GMAC). The implementation provides timestamping at the physical layer with sub-microsecond accuracy, enabling synchronization across distributed avionics nodes without external timestamping ICs.
What external memory types does the Hardened External Memory Controller (HEMC) support?
The HEMC in SAMRH71F20C-7GB-E supports PROM, SRAM, and SDRAM with variable data bus widths (8, 16, 32, or 48 bits). It includes built-in ECC generation and correction logic compatible with standard SDRAM chips, and supports up to 2 GB of addressable external memory space across six independent chip selects.
Is SAMRH71F20C-7GB-E pin-compatible with other SAMRH71 variants?
No - SAMRH71F20C-7GB-E uses the TFBGA625 package, while CQFP256 variants (e.g., SAMRH71F20C-7GC-E) have entirely different pin counts, layouts, and signal assignments. There is no pin-to-pin compatibility between TFBGA625 and CQFP256 packages; PCB redesign is required when switching between them.
What debug and trace capabilities are integrated into SAMRH71F20C-7GB-E?
SAMRH71F20C-7GB-E integrates an Embedded Trace Macrocell (ETM) with instruction trace stream and Trace Port Interface Unit (TPIU), enabling real-time non-intrusive code execution monitoring. It also supports SWD/JTAG debugging, reinforced safety watchdog (RSWDT), and hardware breakpoints - all accessible via dedicated debug pins compliant with ARM CoreSight standards.
SAMRH71F20C-7GB-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 625-TBGA
- Series:
- SAMRH71
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- -
- 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:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
SAMRH71F20C-7GB-E FAQ
1.How can I place an order for SAMRH71F20C-7GB-E through Aetrix?
Please submit a Request for Quotation (RFQ) for SAMRH71F20C-7GB-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SAMRH71F20C-7GB-E reliable?
The price and inventory of SAMRH71F20C-7GB-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAMRH71F20C-7GB-E is usually 5 days.
3.What payment methods are accepted for SAMRH71F20C-7GB-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAMRH71F20C-7GB-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAMRH71F20C-7GB-E?
SAMRH71F20C-7GB-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAMRH71F20C-7GB-E order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SAMRH71F20C-7GB-E?
For technical support, including SAMRH71F20C-7GB-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAMRH71F20C-7GB-E requirements.
6.How does Aetrix verify that SAMRH71F20C-7GB-E is sourced from the original manufacturer or authorized distributors?
All SAMRH71F20C-7GB-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SAMRH71F20C-7GB-E meets industry standards.
7.What is the process for return or replacement of SAMRH71F20C-7GB-E?
All SAMRH71F20C-7GB-E units undergo pre-shipment inspection (PSI). If there is an issue with SAMRH71F20C-7GB-E, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SAMRH71F20C-7GB-E part is unused and in its original packaging.
Return procedure for SAMRH71F20C-7GB-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SAMRH71F20C-7GB-E Tags
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