RTAX4000DL-CQ352E - 4M-Gate Rad-Tolerant FPGA | Microchip
MPN: RTAX4000DL-CQ352E ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for RTAX4000DL-CQ352E — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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RTAX4000DL-1CQ352E
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View Datasheet →RTAX4000DL-CQ352V
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View Datasheet →RTAX4000DL-1CQ352V
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View Datasheet →RTAX4000D-CQ352V
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View Datasheet →RTAX4000SL-1CQ352E
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View Datasheet →RTAX4000DL-CQ352E Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology (Actel/Microsemi) |
| Family | RTAX-S/SL and RTAX-DSP Radiation-Tolerant FPGAs |
| Equivalent System Gates | 4,000,000 gates |
| Logic Cells | 55,440 |
| CLBs | 36,960 |
| Process Technology | CMOS |
| Programmability | Antifuse (live-at-power-up) |
| Embedded Memory | Embedded SRAM with built-in FIFO control logic |
| DSP Resources | Dedicated multiply-accumulate blocks (RTAX-DSP variant) |
| Clocking | Segmentable clocks, chip-wide highway routing |
| Arithmetic Support | Carry logic |
| Package | CQ352 ceramic column package, 352 pins |
| Mounting Type | Surface Mount |
| Application Domain | Space-flight systems |
| Radiation Tolerance | Radiation-tolerant (TID and SEE qualified per family datasheet) |
| Configuration | True single-chip form factor |
RTAX4000DL-CQ352E cq352 ceramic column package, 352 pins Pin Configuration Guide
Complete pinout information for RTAX4000DL-CQ352E (cq352 ceramic column package, 352 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 RTAX4000DL-CQ352E.
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
RTAX4000DL-CQ352E is suitable for 6 applications: Satellite Payload Data Processing, On-Board Radar and Image Signal Processing, Spaceflight Instrument Control and Sequencing, Telemetry, Tracking and Command (TT&C) Subsystems, Launch Vehicle and Avionics Interface Electronics, Deep-Space and CubeSat Compute Modules.
Satellite Payload Data Processing
The RTAX4000DL-CQ352E fits satellite payload processing chains where 4,000,000 gates of reconfigurable fabric must survive years of orbital radiation. Its RTAX-DSP multiply-accumulate blocks accelerate compression, FFT, and channelization pipelines at payload data rates, while the antifuse CMOS fabric is immune to configuration upsets, eliminating external configuration memory as a failure point. Deployed between the payload ADC and downlink formatter, it performs real-time signal conditioning with live-at-power-up startup - critical when there is no boot sequence after orbital reset. Low static CMOS power preserves the limited solar-array budget, and the ceramic CQ352 package withstands launch vibration and vacuum outgassing constraints typical of payload electronics bays.
Recommended
On-Board Radar and Image Signal Processing
Synthetic aperture radar and high-resolution Earth-observation imagers demand massive multiply-accumulate throughput; the RTAX4000DL-CQ352E addresses this with dedicated DSP blocks embedded in the 36,960-CLB fabric. Per the Microchip RTAX-DSP datasheet, the DL variant adds these MAC resources to the Axcelerator-derived architecture, letting engineers implement matched filters, corner-turn buffers, and FIR chains entirely on-chip using embedded SRAM with built-in FIFO control. Radiation tolerance is non-negotiable at orbital altitudes, and live-at-power-up antifuse configuration guarantees the processor is operational immediately after switch-on or latchup recovery. The 55,440 logic cells provide headroom for both the DSP datapath and the surrounding control, framing, and telemetry logic in a single ceramic CQ352 device.
Recommended
Spaceflight Instrument Control and Sequencing
Science instruments on planetary probes and orbital telescopes use the RTAX4000DL-CQ352E as the single-chip controller for detector timing, actuator sequencing, and housekeeping telemetry. The segmentable clock structure allows independent clock domains for detector readout and spacecraft interface logic, while chip-wide highway routing distributes control signals with predictable timing. Because antifuse configuration is permanent and live-at-power-up, the FPGA begins valid operation without any configuration device - a decisive reliability advantage during autonomous operations far from Earth. The 4-million-gate capacity consolidates what would otherwise need multiple rad-hard ASICs, shortening qualification cycles. Designers verify timing with the Microchip Libero SoC RTAX models and prototype on Aldec ACT-H3Ki-CQ352 adaptors before committing to flight lots.
Recommended
Telemetry, Tracking and Command (TT&C) Subsystems
TT&C units require deterministic, always-on logic that tolerates the single-event environment of low-Earth and geostationary orbits, making the RTAX4000DL-CQ352E a natural fit. Its 55,440 logic cells implement CCSDS framing, convolutional or Reed-Solomon coding assists, and command decoders, while embedded SRAM FIFOs buffer burst telemetry between the spacecraft bus and downlink modulator. CMOS antifuse fabric never loses its configuration, so the TT&C chain resumes instantly after a power toggle - essential for spacecraft safe-mode recovery. Low quiescent power supports operation through eclipse periods on battery. The CQ352 ceramic column package provides the hermeticity and screening heritage expected in command-critical chains, and pin-compatible speed-grade siblings (RTAX4000DL-1CQ352E) allow timing upgrades without PCB redesign.
Recommended
Launch Vehicle and Avionics Interface Electronics
Avionics interface controllers in launch vehicles and reentry systems use the RTAX4000DL-CQ352E to bridge rad-tolerant sensor buses, redundancy-management voting logic, and flight-computer interfaces. The 36,960 CLBs implement triplex voters, discrete I/O conditioning, and Mil-Std-style bus interface state machines with carry logic accelerating arithmetic comparisons in fault-detection paths. Live-at-power-up operation matters during flight-critical timelines where there is no opportunity to reload a configuration device. The CMOS process keeps static power low in battery-fed avionics bays, and the hermetic ceramic CQ352 package meets outgassing and vibration requirements of launch environments. Same-package family variants (V and E screenings, -1 speed grade) let integrators match program screening specifications without altering the board layout.
Recommended
Deep-Space and CubeSat Compute Modules
Even smallsat and CubeSat compute modules adopt RTAX4000DL-family fabric when mission orbits expose electronics to high TID or heavy-ion flux. The single-chip antifuse architecture removes configuration-memory upsets from the FMEA entirely, while 55,440 logic cells fit payload acceleration, EPS supervision, and ADCS math in one device - valuable where board area is scarce. The CQ352 footprint suits 6U/12U-class carrier boards, and DSP MAC blocks accelerate on-board machine-learning inference filters emerging in deep-space autonomy. Because the family spans RTAX250S through RTAX4000D densities in shared architectures, designs can scale density across missions with common IP. Compared with commercial FPGAs, the trade-off is lower raw clock speed, mitigated by parallel DSP datapaths the large fabric enables.
Recommended
Recommended Products Summary
Engineering reference data for RTAX4000DL-CQ352E — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX4000DL-1CQ352E | RTAX4000DL-CQ352V | RTAX4000DL-1CQ352V | RTAX4000D-CQ352V | RTAX4000SL-1CQ352E |
|---|---|---|---|---|---|---|
| Package | CQ352 (352-pin ceramic) | CQ352 - same | CQ352 - same | CQ352 - same | CQ352 - same | CQ352 - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Equivalent System Gates | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 |
| Logic Cells | 55,440 | 55,440 | 55,440 | 55,440 | 55,440 | 55,440 |
| CLBs | 36,960 | 36,960 | 36,960 | 36,960 | 36,960 | 36,960 |
| Speed Grade | Standard | -1 (faster) | Standard | -1 (faster) | Standard | -1 (faster) |
| DSP MAC Blocks | Yes (RTAX-DSP DL variant) | Yes | Yes | Yes | No (RTAX-D logic die) | No (RTAX-SL logic die) |
| Screening Grade Suffix | E (extended flight) | E | V | V | V | E |
| Embedded SRAM / FIFO | Yes | Yes | Yes | Yes | Yes | Yes |
| Configuration | Antifuse, live-at-power-up | Antifuse, live-at-power-up | Antifuse, live-at-power-up | Antifuse, live-at-power-up | Antifuse, live-at-power-up | Antifuse, live-at-power-up |
Key Differentiators
- Dedicated DSP multiply-accumulate blocks (vs RTAX4000D-CQ352V)
- Faster -1 speed grade option in identical footprint (vs RTAX4000DL-CQ352V)
- Extended flight screening suffix (vs RTAX4000DL-1CQ352V)
Design Notes
Do not interchange screening suffixes without program-office approval: the E and V suffixes of the RTAX4000DL CQ352 device denote different screening/qualification flows, and flight-lot traceability documentation differs. While all variants are pin-to-pin identical on the same board, substitution after PDR/CDR typically triggers delta-qualification review. Freeze the exact MPN (including speed grade and screening letter) in the drawing before lot procurement, and verify date codes against your program's shelf-life and anti-counterfeit requirements when buying from brokers.
The CQ352 ceramic column package requires land-pattern and column-grid attachment attention: follow the Microchip RTAX-S/SL and RTAX-DSP datasheet package drawing for pad geometry, and support the package with adequate via stitching under the die area for mechanical robustness during launch vibration. Prototype with the Aldec ACT-H3Ki-CQ352 adaptor, which matches the CQ352 footprint and allows JTAG programming and alternate power feed, before committing flight hardware. Antifuse devices are programmed once - verify all I/O assignments and unused-pin terminations in Libero before programming flight units.
Estimated: static CMOS power of the RTAX4000DL is low per the Microchip product page (low-power consumption is a stated family advantage), but dynamic power scales with clock frequency and toggling CLB count across the 36,960 CLBs - run Libero SmartPower estimates with your actual design rather than assuming worst-case values. Provide independent, well-decoupled core and I/O rails, and account for inrush at power-up; live-at-power-up operation means the device begins functioning as soon as rails are valid, so ensure supply sequencing is consistent with your reset architecture.
Compliance Information
Hermetic ceramic CQ352 package for spaceflight; specific RoHS/REACH status not stated in verified data - spaceflight ceramic packages are often exempt from RoHS. Verify with Microchip product compliance documentation.
