RTAX4000SL-CG1272B - 4M-Gate Rad-Tolerant FPGA CCGA1272 | Microchip
MPN: RTAX4000SL-CG1272B β Active| Qty | Unit Price | Extended |
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Drop-in alternatives for RTAX4000SL-CG1272B β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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RTAX4000SL-1CG1272B
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View Datasheet βRTAX4000SL-CGS1272B
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RTAX4000SL-1CGS1272B
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RTAX4000S-CG1272B
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RTAX4000SL-LG1272V
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View Datasheet βRTAX4000SL-CG1272B Maximum Ratings & Electrical Characteristics
| Family | RTAX-SL |
| Equivalent System Gates | 4,000,000 |
| Logic Cells (CLBs) | 40320 |
| Process Technology | 0.15 um |
| Core Supply Voltage | 1.5 V |
| Package | 1272-pin CCGA (Ceramic Column Grid Array) |
| Programming Type | One-Time Programmable (antifuse) |
| Radiation Tolerance | Radiation-tolerant (space-flight qualified family) |
| Configuration | Single-chip, live-at-power-up |
| Mounting Type | Surface Mount |
| Speed Grade | Standard (non -1 grade) |
RTAX4000SL-CG1272B 1272-pin ccga (ceramic column grid array) Pin Configuration Guide
Complete pinout information for RTAX4000SL-CG1272B (1272-pin ccga (ceramic column grid array) 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-CG1272B.
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-CG1272B is suitable for 6 applications: Satellite Payload Data Processing, Spacecraft Bus Control and Telemetry, Instrument Front-End Signal Processing, Launch Vehicle Avionics, Reconfigurable Computing Modules for Space, Deep Space and Science Mission Logic.
Satellite Payload Data Processing
The RTAX4000SL-CG1272B is a natural fit for payload data-processing chains on Earth-observation and science satellites. Its 4,000,000 equivalent gates and 40320 logic cells provide headroom for framing, lossless compression, CRC/LDPC error correction, and payload-controller logic in a single device, eliminating the multi-chip glue logic that adds mass and failure modes. Because the antifuse fabric is one-time-programmable, its configuration cannot be corrupted by single-event upsets, so no scrubber or external configuration PROM is needed - a direct mass and reliability saving on the payload board. At a 1.5V core on 0.15 um process, static power is low, preserving payload power budget. The 1272-pin CCGA gives generous I/O for high-width data buses between ADCs, mass memory, and downlink modems. Designers should budget timing closure in Libero SoC and order flight die early given long lead times.
Recommended
Spacecraft Bus Control and Telemetry
Spacecraft on-board computers, telemetry/telecommand (TM/TC) interfaces, and platform controllers benefit from the RTAX4000SL-CG1272B's live-at-power-up behavior: the FPGA is functional within microseconds of power application, with no configuration latency window during which the spacecraft would be unresponsive. This is a decisive advantage over SRAM FPGAs for critical bus functions such as power-switch sequencing, watchdog logic, and CCSDS TM/TC frame handling. The 4M-gate fabric accommodates MIL-STD-1553 or SpaceWire bridge cores alongside the platform controller, and the 1272-pin CCGA exposes enough I/O for redundant bus interfaces. Its radiation-tolerant antifuse architecture means the configuration path has no SEU exposure, simplifying the FDIR argument for the bus controller. Designers typically pair it with space-grade voltage supervisors and rad-tolerant memories; timing analysis in Libero SoC at the selected speed grade closes well below 100 MHz for bus-rate logic.
Recommended
Instrument Front-End Signal Processing
Science instruments - spectrometers, star trackers, radiation monitors, and imaging chains - need deterministic, low-latency pre-processing close to the sensor. The RTAX4000SL-CG1272B's 40320 logic cells implement correlators, FIR filters, decimation chains, and sensor-timing generators with predictable timing because the antifuse fabric has no configuration-dependent routing variability. The large 1272-pin CCGA supports wide parallel sensor interfaces, minimizing serialization latency and simplifying EMI design versus high-speed serial links. Low static power from the 1.5V core helps cryogenic and battery-limited instrument platforms. Because the device is immune to configuration upsets, instrument logic that must run unattended for years in orbit does not require a scrubbing subsystem. System architects should characterize SEU behavior of user flip-flops per Microchip radiation reports and apply TMR selectively on state machines, keeping the mitigation overhead within the 4M-gate budget.
Recommended
Launch Vehicle Avionics
Launch vehicle flight computers, stage-separation sequencers, and telemetry encoders demand logic that is operational at power-up and immune to the vibration and radiation environment of ascent. The ceramic column grid array package of the RTAX4000SL-CG1272B is specifically engineered for the mechanical stress of launch: solder columns accommodate CTE mismatch between the ceramic package and organic PCB through thermal cycling and shock. Its antifuse configuration cannot be disturbed by heavy-ion events during high-altitude flight segments. With 4M gates, a single device can host the sequencer, redundant-voting logic, and encoder functions that would otherwise span multiple devices, reducing board count. Avionics designers value the deterministic timing and single-chip form factor for certification; they should fix the speed grade early (standard or -1) and run Libero timing analysis against worst-case temperature corners specified in the RTAX-S/SL datasheet.
Recommended
Reconfigurable Computing Modules for Space
On-board computing modules that host algorithm acceleration - image processing, encryption, or AI inference kernels - use the RTAX4000SL-CG1272B where mission lifetime and radiation hardness outweigh the flexibility of SRAM FPGAs. While the fabric itself is one-time-programmable, parameterization and mode registers implemented in logic allow in-flight reconfiguration of algorithm behavior without reprogramming the device, a common space-systems pattern. The 4M-gate capacity hosts multiple accelerator engines plus memory controllers for external rad-tolerant SRAM/SDRAM. The 1272-pin CCGA supports wide memory buses and multiple redundant SpaceWire/1553 links. Compared to SRAM alternatives, the design trades in-orbit full-fabric reconfiguration for structural SEU immunity at the configuration level - usually the right trade for multi-year missions. Estimated: with a 1.5V core and moderate clock rates near 50-100 MHz, dynamic power scales linearly with utilization, so budget gate usage against the module's power allocation.
Recommended
Deep Space and Science Mission Logic
Deep-space missions encounter harsher TID and heavy-ion environments than low-Earth-orbit missions, making configuration-immune logic especially valuable. The RTAX4000SL-CG1272B's antifuse fabric cannot experience configuration upsets regardless of particle flux, so missions to Jupiter or beyond avoid the scrubbing-bandwidth and EDAC-overhead penalties that SRAM FPGA designs accumulate. The 4M-gate capacity supports autonomous fault-management logic, science data packetization, and instrument control suitable for long cruise phases with minimal supervision. The hermetic CCGA package suits the thermal cycling of deep-space payloads. Mission teams should obtain the family radiation report from Microchip for TID and SEE figures applicable to their orbit, and apply SEU-tolerant coding to user registers per the datasheet guidance. Long procurement lead times for flight die make early ordering essential; the RTAX prototyping methodology (footprint-compatible adaptor board plus EDIF netlist conversion) allows firmware development in parallel with silicon procurement.
Recommended
Recommended Products Summary
Engineering reference data for RTAX4000SL-CG1272B β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX4000SL-1CG1272B | RTAX4000SL-CGS1272B | RTAX4000S-CG1272B |
|---|---|---|---|---|
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology (Actel) |
| Package | 1272-pin CCGA | 1272-pin CCGA - same | 1272-pin CCGA (S-lid variant) - same footprint | 1272-pin CCGA - same |
| Equivalent Gates | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 |
| Logic Cells | 40320 | 40320 | 40320 | 40320 |
| Family Generation | RTAX-SL | RTAX-SL | RTAX-SL | RTAX-S (previous generation) |
| Speed Grade | Standard | -1 (faster) | Standard | Standard (SL fabric is faster than S) |
| Core Voltage | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
| Configuration Immunity | OTP antifuse, immune to configuration upsets | OTP antifuse - same | OTP antifuse - same | OTP antifuse - same |
| Relative Power | Low (SL generation) | Low (SL generation) | Low (SL generation) | Higher (older S generation) |
Key Differentiators
- Improved SL generation fabric (vs RTAX4000S-CG1272B)
- Faster timing margin available in same footprint (vs RTAX4000SL-1CG1272B)
- Structural configuration upset immunity (vs RTAX4000SL-CGS1272B and all SRAM FPGAs)
Design Notes
Fix the speed grade decision (standard vs -1) before PCB layout is frozen. The RTAX4000SL-CG1272B standard grade and the RTAX4000SL-1CG1272B share the identical 1272-pin CCGA footprint, but timing closure at your target clock frequency may require the -1 grade. Run Libero SoC timing analysis on the full design against worst-case temperature corners from the RTAX-S/SL datasheet before committing to the purchase order, because space-grade silicon lead times make late upgrades costly.
The RTAX-SL fabric operates from a 1.5V core; provide clean core and I/O rails with the decoupling network recommended in the RTAX-S/SL datasheet power section. Static power is low due to the antifuse architecture, but dynamic power scales with clock frequency and toggling rate - high-utilization designs above roughly 50 MHz should use Microchip's SmartPower analyzer in Libero SoC to estimate rail currents and size the point-of-load converters with margin for worst-case vector sequences.
The 1272-pin CCGA uses solder columns specifically to accommodate CTE mismatch between the ceramic package and the organic PCB. Follow Microchip's CCGA assembly and land-pattern application notes: use the column land pattern without via-in-pad where possible, control board warpage during reflow, and define an inspection strategy (X-ray or vision) for the full column array. Avoid reworking individual columns; replacement typically requires a profile-controlled full reflow.
With 1272 pins available, group high-speed buses on contiguous banks and reference them to solid ground planes directly beneath. Because the device is intended for radiation environments, use series termination on long single-ended nets and follow the I/O bank current limits in the datasheet. For SpaceWire or other serial links, implement the PHY externally or use supported cores and verify jitter against the LVDS/CMOS I/O AC specifications in the RTAX-S/SL datasheet.
Compliance Information
Space-grade hermetic ceramic CCGA package; AEC-Q100 is an automotive standard and not applicable. RoHS/REACH status for space-grade ceramic packaging not stated in provided data - obtain from Microchip flight-qualification documentation.
