RTAX4000SL-LG1272E - 4M-Gate Rad-Tolerant FPGA LGA-1272 | Microchip
MPN: RTAX4000SL-LG1272E ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for RTAX4000SL-LG1272E — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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RTAX4000SL-1LG1272E
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View Datasheet →RTAX4000SL-1LG1272V
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View Datasheet →RTAX4000SL-LG1272V
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View Datasheet →RTAX4000SL-1LG1272PROTO
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View Datasheet →RTAX4000SL-LG1272E Maximum Ratings & Electrical Characteristics
| Family | RTAX-SL Radiation-Tolerant FPGA |
| Equivalent Gates | 4,000,000 |
| CLBs (Logic Modules) | 40,320 |
| Logic Cells | 60,480 |
| Process Technology | 0.15 um CMOS |
| Core Supply Voltage | 1.5 V (1.425 V to 1.575 V) |
| Package | 1272-Pin LGA (Ceramic Column) |
| Mounting Type | Surface Mount |
| Programmable Technology | Antifuse |
| Configuration | Live at power-up, single-chip |
| Radiation Tolerance | Radiation-tolerant (spaceflight class) |
| Application Domain | Space-flight systems |
| Packaging | Box |
RTAX4000SL-LG1272E 1272-pin lga (ceramic column) Pin Configuration Guide
Complete pinout information for RTAX4000SL-LG1272E (1272-pin lga (ceramic column) 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-LG1272E.
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-LG1272E is suitable for 6 applications: Satellite Payload Data Processing, Spacecraft Bus Control and Telemetry, Planetary Instrument and Sensor Interface, Deep-Space Communication Baseband, Launch Vehicle Avionics, FPGA Prototyping and Flight Design Migration.
Satellite Payload Data Processing
The RTAX4000SL-LG1272E fits payload data processing chains where high logic density and SEU resilience are non-negotiable. Its 4,000,000 equivalent gates and 60,480 logic cells accommodate framer, formatter, and compression pipelines, while the antifuse fabric eliminates configuration-upset failure modes that SRAM FPGAs must mitigate with TMR and scrubbing. The 1.5V (1.425V-1.575V) core keeps static power low for power-limited spacecraft. Deployed between sensor front ends and downlink modems, it processes data deterministically at power-up with no boot PROM, and the 1272-pin LGA-1272 package supplies the I/O count for wide parallel data buses. Trade-off: one-time programming locks the payload function before launch, so extensive flight-software validation in Libero SoC is mandatory.
Recommended
Spacecraft Bus Control and Telemetry
For spacecraft bus controllers and telemetry digitizers, the RTAX4000SL-LG1272E provides live-at-power-up operation, ensuring the platform is controllable the instant power is applied during launch, separation, and safe-mode events. The 40,320 CLBs implement housekeeping UART/MIL-STD-1553 style interfaces, watchdog logic, mode state machines, and telemetry framers, while the antifuse configuration cannot corrupt under heavy-ion exposure. Core operation at 1.5V within a 1.425V-1.575V window simplifies point-of-load regulation from spacecraft buses. The 1272-column LGA package offers abundant I/O banks for discrete monitoring, heater control, and redundant bus interfaces. Design consideration: the one-time-programmable fabric means bus logic must be finalized and timing-closed in Libero SoC before flight-lot programming.
Recommended
Planetary Instrument and Sensor Interface
Science instruments on planetary probes demand deterministic, radiation-tolerant logic that survives multi-year cruises; the RTAX4000SL-LG1272E delivers 4M gates of antifuse fabric with inherently upset-immune configuration for ADC control, sequencer timing, and histogramming pipelines. The 60,480 logic cells and embedded memory handle sensor calibration math, while the 1272-pin LGA-1272 package connects high-channel-count detector arrays. Its 0.15um CMOS process and 1.5V core minimize dissipation inside thermally constrained instrument enclosures, and single-chip operation removes configuration-storage parts from the reliability budget. Instruments benefit because the FPGA is functional at first power-on after the years-long cruise, with no loader needed. Trade-off: fixed function after programming, so instrument modes must be fully defined pre-flight.
Recommended
Deep-Space Communication Baseband
Deep-space transponders and baseband modulators rely on the RTAX4000SL-LG1272E's 4,000,000-gate fabric to implement convolutional/LDPC-style encoding blocks, symbol mappers, and CCSDS framing within a single radiation-tolerant device. Antifuse configuration withstands the heavy-ion flux encountered beyond Earth's magnetosphere without scrubbing traffic, and 1.5V core operation (1.425V-1.575V) meets spacecraft power budgets. The 1272 LGA columns support wide parallel sample paths between ADC/DAC converters and the digital modem. Live-at-power-up startup matters for autonomous deep-space operation where no operator can reload configuration. Engineering note: use the -1 speed grade (RTAX4000SL-1LG1272E, 0.99 ns CLB delay) if symbol rates push timing closure in the base grade.
Recommended
Launch Vehicle Avionics
Launch-vehicle flight computers and sequencing units use the RTAX4000SL-LG1272E because flight-critical logic must be correct at first power application with zero probability of configuration corruption during the vibrational and radiational ascent environment. The device's 40,320 CLBs implement redundant flight-event sequencers, majority-voted discrete interfaces, and telemetry encoders, while antifuse single-chip construction removes configuration PROM vibration and SEU concerns. The 1.5V core's low static draw suits battery-powered avionics bays. The LGA-1272 ceramic column package withstands launch mechanical stress when mounted per Microchip's surface-mount column-grid guidelines. Pitfall to avoid: protoflight screening units (e.g., PROTO suffix parts) should validate design only; flight lots require the appropriate screening suffix.
Recommended
FPGA Prototyping and Flight Design Migration
Microchip's documented prototyping methodology pairs RTAX4000SL flight devices with footprint-compatible adapter boards so teams validate RTAX-SL designs before committing one-time-programmable flight units. The RTAX4000SL-LG1272E serves as the migration target: the same 4M-gate fabric, 60,480 logic cells, and LGA-1272 pinout are shared with PROTO-suffix parts (RTAX4000SL-1LG1272PROTO) used during verification. An EDIF netlist and pinout converter carries the design from the prototype device to the flight device, minimizing rework. Because antifuse parts cannot be reprogrammed, teams complete timing closure at 1.5V in Libero SoC and exhaustively simulate before programming. This adapter-based flow, described in the RTAX-S/SL datasheet, is the industry-standard de-risking path for LGA-1272 flight designs.
Recommended
Recommended Products Summary
Engineering reference data for RTAX4000SL-LG1272E — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX4000SL-1LG1272E | RTAX4000SL-1LG1272V | RTAX4000SL-LG1272V | RTAX4000SL-1LG1272PROTO | RTAX4000S-1LG1272PROTO |
|---|---|---|---|---|---|---|
| Package | LGA-1272 | LGA-1272 - same | LGA-1272 - same | LGA-1272 - same | LGA-1272 - same | LGA-1272 - same |
| Brand | Microchip Technology (Actel) | Microchip Technology (Actel) | Microchip Technology (Actel) | Microchip Technology (Actel) | Microchip Technology (Actel) | Microchip Technology (Actel) |
| Equivalent Gates | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 |
| Logic Cells | 60,480 | 60,480 | 60,480 | 60,480 | 60,480 | 60,480 |
| CLBs | 40,320 | 40,320 | 40,320 | 40,320 | 40,320 | 40,320 |
| Speed Grade | Standard | -1 (0.99 ns CLB delay) | -1 | Standard | -1 | -1 |
| Screening / Temperature Suffix | E | E | V | V | PROTO | PROTO |
| Core Supply Voltage | 1.5 V (1.425-1.575 V) | 1.5 V (1.425-1.575 V) | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
Key Differentiators
- Single-chip, live-at-power-up operation (vs SRAM-based space FPGAs)
- Base speed grade at lower cost (vs RTAX4000SL-1LG1272E)
- E vs V screening selection (vs RTAX4000SL-LG1272V)
Design Notes
The LGA-1272 ceramic column package uses solder columns (not balls), requiring a dedicated land pattern with column-grid pitch per the RTAX-S/SL datasheet package drawing. Solder-joint inspection needs X-ray or angled microscopes since columns sit under the body. Use CTE-matched board materials or under-stiffened layouts to limit thermal-cycling strain on outer columns. Per Microchip's prototyping application note, validate assembly with the footprint-compatible adapter board before committing flight hardware.
Power the 1.5V core within the 1.425V-1.575V window using a tight-tolerance point-of-load regulator; antifuse fabric draws low static current but dynamic power scales with clock rate and switching activity, so run Microchip's power estimator with your Libero netlist before finalizing the rail design. Sequence I/O banks before or with the core per datasheet guidance and decouple all core/I/O rails with low-ESR ceramics placed at the LGA land pattern.
RTAX-SL parts are one-time programmable: an antifuse programmed incorrectly consumes the device. Complete timing closure at the correct speed grade (base vs -1, 0.99 ns CLB delay), pass all DRCs, and lock pin assignments in Libero SoC before submitting to programming. Do not substitute PROTO-suffix parts for flight units, and verify the screening suffix (E vs V) against the mission environmental specification before ordering.
Compliance Information
No RoHS/REACH declaration found in verified web data for this space-grade ceramic package as of 2026-09-02; request Microchip material declaration directly.
