RTAX4000S-LG1272V - 4M-Gate Rad-Tolerant FPGA | Microchip
MPN: RTAX4000S-LG1272V ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12500 | $12,500.00 |
| 10 | $11800 | $118,000.00 |
| 100 | $10900 | $1,090,000.00 |
| 500 | $10200 | $5,100,000.00 |
| 1,000 | $9600 | $9,600,000.00 |
Drop-in alternatives for RTAX4000S-LG1272V — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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RTAX4000SL-LG1272V
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View Datasheet →RTAX4000S-1LG1272V
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RTAX4000S-1LG1272PROTO
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View Datasheet →RTAX4000SL-1LG1272PROTO
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View Datasheet →RTAX4000SL-CG1272B
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View Datasheet →RTAX4000SL-1CG1272E
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View Datasheet →RTAX4000S-LG1272V Maximum Ratings & Electrical Characteristics
| Equivalent System Gates | 4,000,000 |
| Logic Cells (D-Modules) | 60480 |
| CLBs (R-Cells) | 40320 |
| Logic Family | CMOS, antifuse, one-time programmable |
| Core Supply Voltage | 1.5 V nominal |
| Operating Temperature | -55C to +125C |
| Package | LG1272 ceramic column grid array, 1272 pins |
| Terminal Pitch | 1.000 mm |
| Mounting Type | Surface Mount |
| SEU Immunity | Immune to single-event upsets up to LETTH MeVcm2/mg |
| SEU Rate | < 10-10 errors per bit-day |
| SEU-Hardened Registers | Yes (eliminates need for TMR) |
| Configuration | Live at power-up, single-chip (no external boot device) |
| Radiation Tolerance | RadTolerant RTAX-S family |
| Application Domain | Space-flight systems |
| Speed Grade | Standard (unmarked in LG1272V suffix) |
RTAX4000S-LG1272V lg1272 ceramic column grid array, 1272 pins Pin Configuration Guide
Complete pinout information for RTAX4000S-LG1272V (lg1272 ceramic column grid array, 1272 pins package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for RTAX4000S-LG1272V.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
RTAX4000S-LG1272V is suitable for 6 applications: Satellite Payload Data Processing, Spacecraft Avionics and Command & Data Handling, Deep-Space Instrument Interfaces, LEO Constellation Spacecraft Buses, Launch Vehicle Electronics, Defense and National Security Space Electronics.
Satellite Payload Data Processing
The RTAX4000S-LG1272V fits satellite payload processing chains that need 4,000,000 gates of reprogrammable logic with inherent SEU immunity. Its 40320 CLBs and 60480 logic cells implement CCSDS encoders, compression engines, and on-board data-formatting pipelines, while SEU-hardened registers with an error rate below 10-10 errors per bit-day remove the TMR overhead that SRAM FPGAs impose, roughly tripling effective usable capacity. The antifuse fabric is live at power-up, so payload logic is available within microseconds of power switch-on, and the single-chip form factor eliminates external configuration memory that adds launch risk. Implemented in a hermetic LG1272 ceramic package rated -55C to +125C at a 1.5V core, the device balances processing throughput against the strict power budget of a typical payload bus, where every watt spent on the processing FPGA must be justified against downlink capacity.
Recommended
Spacecraft Avionics and Command & Data Handling
For spacecraft avionics and C&DH units, the RTAX4000S-LG1272V provides the deterministic, live-at-power-up behavior required for command decoders, telemetry formatters, and fault-management controllers. Because the antifuse configuration cannot be corrupted by radiation, the boot path contains no vulnerable configuration memory, and SEU-hardened flip-flops hold state through single events up to LETTH MeV.cm2/mg. The 4M-gate capacity consolidates multiple MIL-STD-1553, SpaceWire, and UART interfaces into one certified device, reducing board count and mass. Operating from a 1.5V nominal core across -55C to +125C, it survives launch transients and orbital thermal cycling inside the LG1272 ceramic column grid array, whose 1.000 mm pitch and column terminations withstand vibration and shock. Designers typically validate the avionics bitstream on a PROTO-grade unit before programming flight devices, since antifuse programming is permanent.
Recommended
Deep-Space Instrument Interfaces
Deep-space probes and science instruments operate in radiation environments far harsher than low-Earth orbit, which is where the RTAX4000S-LG1272V's sub-10-10 errors-per-bit-day SEU rate becomes decisive. Its 4,000,000 gates implement instrument sequencers, high-resolution ADC/DAC framing logic, and interferometer or spectrometer control datapaths that must hold coherent state for months without reset. The SEU-hardened register fabric eliminates triple-module redundancy, freeing roughly two-thirds of the 60480 logic cells for instrument functionality. The hermetic LG1272 ceramic package and -55C to +125C operating range handle cryogenic-adjacent instrument electronics and deep-space cold cases, while the low-power 1.5V CMOS core respects the extreme energy budgets of outer-planet and heliophysics missions where solar flux is a fraction of Earth orbit levels. One-time programmability also guarantees the instrument configuration is identical at launch and arrival.
Recommended
LEO Constellation Spacecraft Buses
Large low-Earth-orbit constellations demand rad-tolerant logic at the bus level, and the RTAX4000S-LG1272V serves as the main bus FPGA for on-board computers, power distribution controllers, and attitude-determination interfaces. With 40320 CLBs it integrates the bus controller, Watchdog and mode-management state machines, and multiple sensor and actuator interfaces in a single chip, cutting board area on high-volume production spacecraft. The live-at-power-up antifuse fabric and SEU-hardened registers below 10-10 errors per bit-day provide single-string reliability that reduces redundancy overhead per unit - critical when hundreds of satellites ship per year. Its -55C to +125C range and 1.5V core tolerate eclipse thermal swings, and flight heritage of the RTAX-S family across many LEO missions de-risks qualification. Constellation operators typically pair flight devices with PROTO-grade parts in the same LG1272 footprint to reuse one validated board design across both validation and flight lots.
Recommended
Launch Vehicle Electronics
Launch-vehicle avionics - flight computers, separation sequencing, telemetry encoders, and range-safety interface logic - require deterministic operation under extreme vibration and thermal load, which the RTAX4000S-LG1272V's -55C to +125C rating and hermetic LG1272 ceramic package are built to withstand. The antifuse configuration is permanent and live at power-up, so flight-control logic cannot be corrupted between tank pressurization and liftoff, and SEU-hardened registers keep sequencing state machines coherent through the radiation belts traversed during ascent to higher orbits. With 4,000,000 gates and 60480 logic cells, a single device consolidates redundant-channel voting, sensor voting logic, and time-tagged event sequencing that previously required multiple devices, reducing harness complexity and failure points. Designers simulate timing closure in Libero, verify on RTAX4000S PROTO units, then program screened flight devices for the mission lot.
Recommended
Defense and National Security Space Electronics
Defense and national-security space programs specify the RTAX4000S-LG1272V where mission assurance, traceability, and radiation hardness must be demonstrated together. Its SEU rate below 10-10 errors per bit-day, immunity up to LETTH MeVcm2/mg, and hardened register fabric meet the single-event requirements typical of protected military satellite payloads and responsive-space programs. The 4M-gate capacity hosts secure-communication wrappers, anti-tamper interface logic, and mission-cryptographic framing accelerators, while the one-time-programmable antifuse fabric means the deployed configuration is fixed, auditable, and immune to configuration-memory attack or upset. The LG1272 ceramic column grid array provides hermetic sealing and mechanical robustness for booster-phase environments, and the -55C to +125C range covers full military temperature specifications. Procurement flows use screened V-grade units with PROTO parts for development, maintaining a common PCB footprint across the program lifecycle.
Recommended
Recommended Products Summary
Engineering reference data for RTAX4000S-LG1272V — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX4000SL-LG1272V | RTAX4000S-1LG1272V | RTAX4000S-1LG1272PROTO | RTAX4000SL-CG1272B |
|---|---|---|---|---|---|
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | LG1272 ceramic column grid array | LG1272 ceramic - same | LG1272 ceramic - same | LG1272 ceramic - same | CG1272-style ceramic, 1272 pins |
| Equivalent System Gates | 4,000,000 | 4,000,000 class (SL) | 4,000,000 | 4,000,000 | 4,000,000 class (SL) |
| Logic Cells | 60480 | 60480 class | 60480 | 60480 | 60480 class |
| Core Supply Voltage | 1.5 V nominal | 1.5 V nominal | 1.5 V nominal | 1.5 V nominal | 1.5 V nominal |
| Operating Temperature | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C (per family datasheet) | -55C to +125C |
| Speed Grade | Standard | Standard (SL subfamily) | -1 (faster) | -1 (faster), prototype flow | Standard (SL subfamily) |
| Intended Use / Flow | Flight (V-grade flow) | Flight (SL subfamily) | Flight, faster timing | Prototype / development | Flight (B-grade flow) |
| SEU Hardening | SEU-hardened registers, rate < 10-10 errors/bit-day | Same family SEU hardening | Same | Same silicon, reduced screening | Same family SEU hardening |
| Unit Price (1 pc, as of 2026-09-02) | Quote-based (estimate $12,500) | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Native SEU-hardened registers eliminate TMR overhead (vs RTAX4000S-1LG1272V)
- Same-footprint subfamily upgrade path (vs RTAX4000SL-LG1272V)
- Prototype flow reduces program risk (vs RTAX4000S-1LG1272PROTO)
- True single-chip, live-at-power-up operation (vs RTAX4000SL-CG1272B)
Design Notes
The RTAX4000S is one-time programmable: once programmed, the antifuse configuration is permanent and the device cannot be reworked. Complete functional simulation, static timing analysis, and hardware verification on a PROTO-grade unit (e.g., RTAX4000S-1LG1272PROTO or RTAX4000SL-1LG1272PROTO, which share the same LG1272 footprint) before submitting flight devices to programming. Ordering flight parts before the bitstream is frozen risks scrapping thousands of dollars of screened silicon.
Estimated: dynamic power in the 1.5V CMOS core scales with toggle rate and utilization; a heavily used 40320-CLB design at moderate toggle rates can dissipate several watts. The ceramic LG1272 column grid array relies on board-level thermal paths (column solder joints and underlying copper planes) rather than a direct die-attach heatsink path. Provide solid internal ground/power planes under the package and verify junction temperature stays within the -55C to +125C envelope including eclipse transients, using SmartPower estimates for your actual design.
The LG1272 package uses a 1.000 mm terminal pitch with ceramic column terminations, requiring controlled reflow profiles and support during second-side reflow due to package mass. Note that Microchip confirms the CG1272/LG1272 body size on RTAX-DSP devices is slightly larger than the CG/LG1272 used on RTAX4000S/SL devices - do not interchange footprints with RTAX-DSP land patterns. Route the 1.5V core supply with a low-impedance plane and decouple per the RTAX-S/SL datasheet power distribution guidance to minimize core rail droop during simultaneous switching.
Power sequencing and I/O bank voltage assignment must follow the RTAX-S/SL datasheet; core (1.5V nominal) and I/O rails should reach stable levels per the family power-up requirements. Because the fabric is live at power-up, output pins may drive immediately once configured - account for this in systems where downstream circuitry powers up later. Use Libero/SmartPower with realistic toggle rates for power budgets, not worst-case data-sheet numbers, to avoid oversizing the spacecraft power allocation.
Compliance Information
Hermetic ceramic column grid array package intended for space flight; screening flow and compliance declarations (RoHS/REACH exemptions typically apply to hermetic ceramic aerospace packaging) are documented per lot in Microchip mission-assurance paperwork, not in public distributor data.
