RTAX4000D-1CQ352E - 4M-Gate Rad-Tolerant FPGA | Microchip
MPN: RTAX4000D-1CQ352E ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3800 | $3,800.00 |
| 10 | $3600 | $36,000.00 |
| 100 | $3400 | $340,000.00 |
| 500 | $3200 | $1,600,000.00 |
| 1,000 | $3000 | $3,000,000.00 |
Drop-in alternatives for RTAX4000D-1CQ352E — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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RTAX4000D-CQ352EV
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View Datasheet →RTAX4000DL-1CQ352B
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View Datasheet →RTAX4000S-1CQ352V
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View Datasheet →RTAX4000SL-CQ352E
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$2620 / Unit
View Datasheet →RTAX4000D-CQ352EV
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View Datasheet →RTAX4000D-1CQ352E Maximum Ratings & Electrical Characteristics
| Family | RTAX-DSP Radiation-Tolerant FPGA |
| Equivalent System Gates | 4,000,000 |
| Logic Cells / CLBs | 36,960 |
| Process Technology | 0.15 um CMOS |
| Core Supply Voltage | 1.5 V |
| Speed Grade | -1 |
| Package | 352-pin Ceramic CQFP (CQ352) |
| Configuration Technology | Antifuse (live at power-up) |
| Embedded Memory | Embedded SRAM with FIFO control logic |
| Radiation Tolerance | Radiation-tolerant (space-flight qualified family) |
| Temperature Range | Extended (E) |
| Mounting Type | Surface Mount |
RTAX4000D-1CQ352E 352-pin ceramic cqfp (cq352) Pin Configuration Guide
Complete pinout information for RTAX4000D-1CQ352E (352-pin ceramic cqfp (cq352) 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 RTAX4000D-1CQ352E.
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
RTAX4000D-1CQ352E is suitable for 6 applications: Satellite Payload Data Processing, Launch Vehicle Avionics, Deep-Space Instrument Control, Software-Defined Radio Payloads, Spacecraft On-Board Computing, Prototype and Development Builds.
Satellite Payload Data Processing
The RTAX4000D-1CQ352E fits satellite payload processing because its 4,000,000 equivalent gates and 36,960 CLBs provide enough fabric for on-board image compression, packetization, and encryption, while the RTAX-DSP multiply resources accelerate the filtering and transform stages typical of Earth-observation payloads. Its antifuse configuration is live at power-up and immune to configuration-memory upsets, removing the need for external configuration storage or scrubbing logic that SRAM-based flight FPGAs require. The 1.5 V core keeps dynamic power low on solar- and battery-limited buses, and the ceramic CQFP package withstands the thermal cycling of low-Earth-orbit missions. Place the FPGA at the center of the payload data path with the embedded SRAM FIFOs buffering sensor-to-downlink data flow.
Recommended
Launch Vehicle Avionics
Launch-vehicle flight computers and telemetry encoders benefit from the RTAX4000D-1CQ352E because launch environments impose extreme vibration and radiation exposure during passage through the Van Allen belts, and the ceramic CQFP-352 package plus antifuse fabric are proven in such conditions. The -1 speed grade supports real-time control loop closure, while 36,960 CLBs implement redundant-channel voting, telemetry formatting, and separation-event sequencing in a single chip, reducing board count and single-point failures. Live-at-power-up operation ensures the device is operational the instant battery power is applied, which matters for vehicles that cannot tolerate configuration boot delays. Verify SEE and TID figures against the specific flight profile using Microchip radiation reports before design freeze.
Recommended
Deep-Space Instrument Control
Deep-space probes operate for decades in high-radiation environments where total ionizing dose and single-event effects dominate reliability, making the RTAX4000D-1CQ352E's radiation-tolerant 0.15 um CMOS process appropriate for instrument sequencing and science-data acquisition. Its 4M-gate capacity hosts instrument state machines, FIFO-based data acquisition using the embedded SRAM blocks, and DSP pre-processing of sensor streams before the low-rate downlink. Power is extremely scarce beyond Mars, and the 1.5 V core supply directly reduces switching losses in the limited solar/battery budget. The single-chip, no-boot antifuse design eliminates configuration-storage failure modes over long mission durations, and the -1 timing model supports deterministic, conservative instrument timing closure.
Recommended
Software-Defined Radio Payloads
Space SDR transponders need substantial multiply-accumulate throughput combined with radiation tolerance, and the RTAX4000D variant delivers exactly this combination through its DSP-oriented resources within the 4M-gate fabric. Typical implementations use the 36,960 CLBs for channel filtering, the embedded SRAM FIFOs for symbol buffering, and segmented chip-wide clock routing to isolate the high-speed digital modulator from sensitive analog interface timing. The antifuse configuration guarantees the radio is on-air immediately at power-up with no configuration fetch, important for coherent beacon operation. Compared with reprogrammable SRAM flight FPGAs, the fixed fabric trades post-launch flexibility for upset immunity and lower SEU-mitigation overhead, which often nets higher available throughput per watt on the 1.5 V core.
Recommended
Spacecraft On-Board Computing
As a general on-board computing element, the RTAX4000D-1CQ352E implements memory controllers, bus interfaces, and housekeeping telemetry in one chip: embedded SRAM with built-in FIFO control handles buffering, chip-wide highway routing distributes clocks across the die, and 4M gates provide headroom for interface consolidation as subsystems merge. Segmentable clocks let designers partition time-critical control sections from slower telemetry logic, easing timing closure at the -1 speed grade. Live-at-power-up antifuse behavior suits watchdog and reset supervision roles where the device must gate other rails from the first millisecond. The 352-pin CQFP offers a manageable pin count for medium-complexity boards and a ceramic body compatible with conventional space-qualified assembly flows.
Recommended
Prototype and Development Builds
Although RTAX4000D-1CQ352E is a flight-grade part, Microchip's prototype flow for the RTAX-S/SL and RTAX-DSP families offers units in non-hermetic ceramic packages with the same timing attributes as flight units, letting teams close timing and validate RTL against flight-representative models before committing to expensive ceramic CQFP hardware. Designs target the same 36,960-CLB architecture and -1 speed grade in Microchip Libero SoC, so the netlist migrates directly to RTAX4000D-1CQ352E for flight. This two-step approach de-risks program schedules: logic and I/O assignments verified on prototype units carry over pin-for-pin to the CQ352 flight package, while radiation screening and lot qualification are applied only to the final flight build.
Recommended
Recommended Products Summary
Engineering reference data for RTAX4000D-1CQ352E — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX4000D-CQ352E | RTAX4000DL-1CQ352B | RTAX4000S-1CQ352V | RTAX4000SL-CQ352E |
|---|---|---|---|---|---|
| Package | 352-pin CQFP (CQ352) | 352-pin CQFP - same | 352-pin CQFP - same | 352-pin CQFP - same | 352-pin CQFP - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Equivalent Gates | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 | 4,000,000 |
| CLBs | 36,960 | 36,960 | 36,960 | 36,960 | 36,960 |
| Family / DSP Resources | RTAX-DSP (with DSP resources) | RTAX-DSP - same | RTAX-DSP - same | RTAX-S - no DSP resources | RTAX-SL - no DSP, SEU-hardened FFs |
| Speed Grade | -1 | [DATA_NEEDED] | -1 | -1 | [DATA_NEEDED] |
| Temperature Grade | Extended (E) | Standard | [DATA_NEEDED] | [DATA_NEEDED] | Extended (E) |
| 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 |
| Core Voltage | 1.5 V | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
Key Differentiators
- DSP-oriented multiply resources in rad-tolerant fabric (vs RTAX4000S-1CQ352V)
- Extended temperature grade for flight environments (vs RTAX4000D-CQ352E)
- Honest trade-off: no post-launch reprogramming (vs RTAX4000DL-1CQ352B)
Design Notes
Core rails at 1.5 V dominate dynamic power in the RTAX4000D; estimate total power in Microchip Libero SmartPower with your actual toggle rates before sizing the spacecraft DC-DC converter. Decouple every VCC and VCCA pin with 0.1 uF ceramics placed within 2 mm of the pin, plus bulk 10 uF per rail. Estimated: a 4M-gate fabric at moderate utilization can draw on the order of watts, so plan thermal paths through the ceramic CQFP body and board copper accordingly.
The 352-pin CQFP requires careful land-pattern design: follow the mechanical drawing in the RTAX-S/SL and RTAX-DSP datasheet (rtaxs_ds2169) exactly, and verify the corner lead orientation of the CQ352 package against your footprint before fabrication. Use equal-length tuned routing for clock and high-speed I/O, and do not route signals under the package body without ground stitching. Note that the 1272-pin CG/LG package bodies of RTAX4000D/DL are larger (42.5 mm) than RTAX4000S/SL equivalents - relevant if your design may migrate packages later.
Antifuse FPGAs are one-time programmable: a design error in the programming file destroys the unit, so exhaustively verify the netlist in simulation and on prototype units before programming flight hardware. Programmed RTAX4000D parts cannot be reworked. Additionally, confirm that temperature grade suffix (E vs standard) matches your mission thermal analysis, and request Microchip radiation test reports (TID/SEE) for the specific lot when qualifying for flight.
Compliance Information
Ceramic CQFP hermetic package typical of space-grade products; specific RoHS/REACH status not stated in retrieved data - consult Microchip product compliance documentation.
