RTAX4000SL-1LG1272V - 4M-Gate Rad-Tolerant FPGA | Microchip
MPN: RTAX4000SL-1LG1272V ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for RTAX4000SL-1LG1272V — 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-LG1272V
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View Datasheet →RTAX4000SL-1LG1272PROTO
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View Datasheet →RTAX4000SL-1LG1272V Maximum Ratings & Electrical Characteristics
| Equivalent System Gates | 4,000,000 gates |
| Logic Cells | 60480 |
| CLBs (Combinational Logic Blocks) | 40320 |
| Family | RTAX-S/SL (RTAX4000SL) |
| Technology | 0.15 um CMOS, antifuse |
| Core Supply Voltage | 1.5 V |
| Package | 1272-pin LGA |
| Speed Grade | -1 |
| Programmability Type | Antifuse (one-time programmable) |
| Configuration | Live-at-power-up, single chip |
| Embedded SRAM | Yes (with built-in FIFO control logic) |
| Clocking | Segmentable clock-conditioning circuitry |
| Radiation Tolerance | Radiation-tolerant (space-flight qualified family) |
| Mounting Type | Surface Mount |
RTAX4000SL-1LG1272V 1272-pin lga Pin Configuration Guide
Complete pinout information for RTAX4000SL-1LG1272V (1272-pin lga 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 RTAX4000SL-1LG1272V.
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
RTAX4000SL-1LG1272V is suitable for 6 applications: Satellite Payload Data Processing, Spacecraft On-Board Computer (OBC) Logic, Telemetry and Telecommand Interfaces, Launch Vehicle Avionics, Deep-Space Science Instrument Front Ends, Earth-Obserence Satellite Bus Electronics.
Satellite Payload Data Processing
The RTAX4000SL-1LG1272V's 4,000,000 equivalent gates and 60,480 logic cells provide sufficient fabric for on-board image compression, FFT processing, and high-rate telemetry formatting on Earth-observation and science satellites. Its embedded SRAM blocks with built-in FIFO control logic absorb rate-buffering between high-speed sensor interfaces and downlink chains without external memory. Because the antifuse fabric is configuration-robust and latch-up immune, the device sustains heavy-ion environments in LEO and GEO without the extensive TMR overhead SRAM FPGAs require. Designers typically partition the design so the FPGA handles real-time pipeline stages while a rad-tolerant processor supervises, exploiting the single-chip, live-at-power-up property to eliminate boot devices from the payload power-on sequence.
Recommended
Spacecraft On-Board Computer (OBC) Logic
Spacecraft avionics and on-board computers benefit from the RTAX4000SL-1LG1272V's combination of density and deterministic configuration: 40,320 CLBs implement bus interfaces (MIL-STD-1553, SpaceWire front-end logic), memory controllers, and watchdog/reconfiguration state machines in a single live-at-power-up chip. Single-chip operation reduces board area, connectors, and failure points compared to multi-chip solutions, while the 1.5V core keeps dynamic power low for power-constrained platforms. The segmentable clock-conditioning circuitry supports redundant clock domains required in fault-tolerant OBC architectures. Microchip's migration methodology allows the same HDL netlist to be prototyped on commercial equivalents and converted to the flight RTAX-SL pinout with the EDIF netlist converter, de-risking schedule.
Recommended
Telemetry and Telecommand Interfaces
Flight TT&C (telemetry, tracking, and command) chains need glue-free integration of protocol encoding, frame synchronization, and encryption pre-processing. The RTAX4000SL-1LG1272V fits because its 4M-gate fabric accommodates CCSDS framing, convolutional/LDPC encode assist, and redundant command-decoder logic while consuming low quiescent power between passes - critical for eclipse operations. Live-at-power-up operation ensures the command decoder is active the instant spacecraft power is applied, which is essential after safe-mode resets. The V qualification suffix of this MPN aligns with flight lot acceptance flows. Designers typically pair the FPGA with rad-tolerant memories and use the embedded SRAM FIFOs to decouple the downlink formatter from variable-rate science data streams.
Recommended
Launch Vehicle Avionics
Launch vehicles impose severe vibration, short-duration high-radiation passages, and absolute single-chip reliability requirements. The RTAX4000SL-1LG1272V's antifuse interconnect has no stored configuration to upset, an intrinsic advantage over SRAM FPGAs for ascent-critical sequencing, redundant IMU interface logic, and flight-termination receivers. Its 1272-pin LGA offers dense I/O for sensor buses and discretes while remaining a single surface-mounted component, simplifying conformal coating and inspection. The -1 speed grade supports the tens-of-MHz control-loop rates typical of guidance interfaces with wide timing margin over temperature. Prototyping on the footprint-compatible PROTO device allows avionics teams to complete hardware-in-the-loop testing before committing flight-lot silicon.
Recommended
Deep-Space Science Instrument Front Ends
Instruments on deep-space probes accumulate high total ionizing dose over multi-year missions, which is precisely where the SL enhancement of the RTAX4000SL earns its selection over the non-SL RTAX4000S. The 60,480 logic cells implement sensor digitization pipelines, on-chip gain calibration logic, and autonomous health-monitoring counters for instruments such as spectrometers and imagers. Embedded SRAM with FIFO control buffers science bursts, while low core power (1.5V, 0.15 um CMOS) fits the strict energy budgets of radioisotope-powered spacecraft. Because deep-space missions cannot be serviced, the configuration-immune antifuse fabric removes a whole class of single-event-upset failure modes from the instrument reliability analysis.
Recommended
Earth-Obserence Satellite Bus Electronics
Platform subsystems - power distribution control, attitude-determination interfaces, and battery-management supervisory logic - need moderate density, deterministic startup, and years of radiation endurance. The RTAX4000SL-1LG1272V, or its lower-TID sibling RTAX4000S-LG1272V for LEO budgets, implements these functions with live-at-power-up readiness so the bus is manageable from the first power application. Segmentable clocks allow redundant oscillator supervision, and the 1272-pin LGA I/O budget connects sun sensors, reaction-wheel encoders, and housekeeping ADCs directly. Using one family across payload and bus electronics shares qualification data, tools, and flight heritage, and Microchip's EDIF-based migration flow lets a single netlist move between prototyping and flight packages.
Recommended
Recommended Products Summary
Engineering reference data for RTAX4000SL-1LG1272V — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX4000SL-LG1272V | RTAX4000S-LG1272V | RTAX4000SL-1LG1272PROTO |
|---|---|---|---|---|
| Package | 1272-pin LGA | 1272-pin LGA - same | 1272-pin LGA - same | 1272-pin LGA - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology |
| Equivalent Gates | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 |
| Logic Cells | 60480 | 60480 | 60480 | 60480 |
| Speed Grade | -1 | [DATA_NEEDED] | [DATA_NEEDED] | -1 |
| Radiation Performance | SL enhanced TID | SL enhanced TID | RTAX-S standard TID | SL enhanced TID (non-flight lot) |
| Intended Use | Flight units (V flow) | Flight units | Flight units (LEO budgets) | Prototyping only |
| Core Supply Voltage | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
Key Differentiators
- Highest RTAX-S/SL density with enhanced TID (vs RTAX4000S-LG1272V)
- Flight qualification flow (V suffix) (vs RTAX4000SL-1LG1272PROTO)
- Live-at-power-up single-chip operation (vs SRAM-based space FPGAs)
Design Notes
Antifuse FPGAs are one-time programmable: there is no reconfiguration after bonding or after a design bug is discovered on assembled hardware. Full-chip timing closure and simulation sign-off must be completed in Libero SoC before submitting the netlist to programming. Use Microchip's documented migration methodology - the footprint-compatible adaptor board plus EDIF netlist/pinout converter - to validate the design on prototyping hardware (e.g., RTAX4000SL-1LG1272PROTO or commercial equivalents) before committing flight-lot devices.
The RTAX-SL fabric runs from a 1.5V core with separate I/O supplies; sequence supplies per the datasheet power-up specification to ensure the live-at-power-up antifuse fabric initializes correctly. Budget power using Libero SmartPower with worst-case space temperature profiles - dynamic power dominates in high-activity pipelines, and the absence of configuration current (no boot device) simplifies the power-on transient analysis required by spacecraft power system reviews.
The 1272-pin LGA requires a precision land pattern with a defined solder volume; follow the mechanical drawing in the Microchip RTAX-S/SL datasheet and verify reflow profiles with coupon builds, since LGA joints are invisible to standard post-reflow AOI. Decouple all VCC/VCCA banks with local ceramic capacitors and follow the datasheet's recommended stack-up for controlled-impedance high-speed I/O banks used by SpaceWire and parallel payload interfaces.
Compliance Information
Space-flight device; qualification is governed by Microchip's space flow (V suffix) rather than AEC-Q100. RoHS/REACH status not stated in provided data.
