RTAX4000D-CQ352V - 4M-Gate Rad-Tolerant FPGA | Microchip Technology
MPN: RTAX4000D-CQ352V ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
Drop-in alternatives for RTAX4000D-CQ352V — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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RTAX4000SL-CQ352EV
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View Datasheet →RTAX4000SL-1CQ352E
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View Datasheet →RTAX4000SL-CQ352E
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View Datasheet →RTAX250SL-CQ352V
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View Datasheet →RTAX1000SL-CQ352V
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View Datasheet →RTAX4000D-CQ352V Maximum Ratings & Electrical Characteristics
| Equivalent System Gates | 4,000,000 gates |
| Logic Cells | 55,440 |
| CLB Organization | 36,960 CLBs |
| Number of User I/Os | 166 |
| Technology | Digital, CMOS |
| Programmability Type | Antifuse (OTP), live at power-up |
| Family | RTAX-S/SL and RTAX-DSP radiation-tolerant FPGAs |
| Embedded Memory | Embedded SRAM with built-in FIFO control logic |
| Clocking | Segmentable clocks, chip-wide highway routing |
| Operating Temperature Min | -55 C |
| Operating Temperature Max | +125 C |
| Mounting Type | Surface Mount |
| Package | CQ352 ceramic column grid array |
| Application Domain | Space flight systems (radiation-tolerant) |
RTAX4000D-CQ352V cq352 ceramic column grid array Pin Configuration Guide
Complete pinout information for RTAX4000D-CQ352V (cq352 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 RTAX4000D-CQ352V.
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-CQ352V is suitable for 6 applications: Satellite Payload Data Processing, Spacecraft Command and Data Handling, Earth Observation Sensor Signal Processing, Software-Defined Radio Payloads, Launch Vehicle Avionics, Space Instrument Prototyping and Emulation.
Satellite Payload Data Processing
The RTAX4000D-CQ352V fits satellite payload data-processing chains where 4,000,000 equivalent gates and RTAX-DSP multiply-accumulate resources execute compression, formatting, and filtering of instrument data on orbit. Its antifuse fabric is live at power-up and immune to configuration upset, removing the need for configuration scrubbing that SRAM FPGAs demand in radiation fields. Placed between a sensor front end and a downlink formatter, the 166 user I/Os of the CQ352 package absorb LVDS-style source buses while embedded SRAM with FIFO control buffers burst data between clock domains. The one-time-programmable fabric also reduces static power, an important trade-off against reprogrammability in power-limited spacecraft.
Recommended
Spacecraft Command and Data Handling
In spacecraft command-and-data-handling (CDH) units, the RTAX4000D-CQ352V implements telemetry framing, decoder, bus-bridge, and housekeeping logic with -55C to +125C operation matching avionics qualification envelopes. Live-at-power-up antifuse operation means critical sequencing and safe-mode logic are functional the instant power arrives, a decisive property for launch and power-anomaly recovery. Segmentable clocks and chip-wide highway routing support the many asynchronous domains typical of CDH boards, while 55,440 logic cells provide headroom for design growth. Engineers typically reserve this DSP-class die for CDH boards that also host modest on-board processing, consolidating two FPGA functions into one flight unit.
Recommended
Earth Observation Sensor Signal Processing
Earth-observation instruments such as hyperspectral and synthetic-aperture sensors require on-board matched filtering, FFT, and gain-staging that the RTAX-DSP multiply-accumulate blocks of the RTAX4000D-CQ352V execute efficiently in 4 million equivalent gates. The antifuse fabric tolerates the total ionizing dose accumulated over multi-year low-Earth-orbit missions without configuration errors, while embedded SRAM with FIFO control logic handles line-rate data streams from focal-plane arrays. The 352-pin ceramic CQ352 package with 166 user I/Os supports wide parallel sensor interfaces at full instrument clock rates, and radiation-tolerant qualification plus -55C to +125C ratings align with instrument thermal and environmental requirements.
Recommended
Software-Defined Radio Payloads
Space software-defined-radio payloads benefit from the RTAX4000D-CQ352V combination of DSP multiply-accumulate resources and 55,440 logic cells, which implement digital down-conversion, channel filtering, and FEC encoding in a single radiation-tolerant device. Its true single-chip form factor and live-at-power-up behavior simplify transceiver startup sequencing, while low antifuse static power reduces the payload power budget on orbit. The chip-wide highway routing network maintains timing integrity across the wide datapaths typical of SDR channelizers. Designers prototype identical RTL on RTAX ProtoDev units, which share flight timing attributes, before committing scarce flight units to the one-time-programmable fabric.
Recommended
Launch Vehicle Avionics
Launch-vehicle flight computers and stage controllers use the RTAX4000D-CQ352V because the -55C to +125C operating range and radiation-tolerant antifuse fabric withstand the brief but severe thermal and radiation environment of ascent through the Van Allen belts. Live-at-power-up logic guarantees that safe-mode and abort-detection functions operate from the first millisecond of battery activation with no configuration load time. The 4-million-gate capacity consolidates guidance interface, redundancy voting, and telemetry logic into a single CQ352 ceramic package, improving board reliability. The 166 user I/Os accommodate triply-redundant sensor and actuator interface sets common in fault-tolerant launch avionics architectures.
Recommended
Space Instrument Prototyping and Emulation
Because RTAX flight units are one-time-programmable and expensive, design teams validate RTL on Microchip ProtoDev prototype units, which carry the same timing attributes as RTAX-S/SL and RTAX-DSP flight parts in non-hermetic ceramic packages. The Aldec ACT-H3Ki-CQ352 adaptor provides a power- and footprint-compatible carrier for CQ352 devices, supporting JTAG programming and external power connector options for laboratory bring-up. Prototyping on the RTAX4000D-CQ352V footprint verifies I/O assignments, timing closure, and floorplanning before flight-lot programming, reducing the risk of scrapping irreplaceable flight units on logic errors discovered late in the integration flow.
Recommended
Recommended Products Summary
Engineering reference data for RTAX4000D-CQ352V — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX4000SL-CQ352EV | RTAX4000SL-1CQ352E | RTAX250SL-CQ352V | RTAX1000SL-CQ352V |
|---|---|---|---|---|---|
| Package | CQ352 ceramic column grid array | CQ352 - same | CQ352 - same | CQ352 - same | CQ352 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Equivalent Gates | 4,000,000 | 4,000,000 | 4,000,000 | RTAX250 class (~250,000) | 1,000,000 |
| DSP MAC Blocks | Yes (RTAX-DSP die) | No (SL logic die) | No (SL logic die) | No | No |
| User I/Os | 166 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Operating Temperature | -55C to +125C | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Programming Technology | Antifuse OTP, live at power-up | Antifuse OTP, live at power-up | Antifuse OTP, live at power-up | Antifuse OTP, live at power-up | Antifuse OTP, live at power-up |
| Application Segment | Space flight signal processing | Space flight logic | Space flight logic | Space flight logic (low density) | Space flight logic (mid density) |
Key Differentiators
- RTAX-DSP multiply-accumulate resources for on-board processing (vs RTAX4000SL-CQ352EV)
- 4,000,000-gate density headroom (vs RTAX1000SL-CQ352V)
- Live-at-power-up antifuse fabric (vs SRAM-based space FPGAs)
Design Notes
RTAX devices are antifuse, one-time-programmable: a single programming error permanently consumes a flight unit. Always verify RTL on RTAX ProtoDev prototype units, which per the Microchip datasheet share the same timing attributes as flight parts but ship in non-hermetic ceramic packages. Program flight units only after timing closure sign-off and I/O ring review in Libero SoC.
The antifuse fabric has very low static power compared with SRAM FPGAs, but dynamic power scales with clock frequency and toggle rate in the 4M-gate fabric. Estimate core and I/O current per the RTAX-S/SL and RTAX-DSP datasheet power equations during design, and budget for the CQ352 ceramic package thermal path (no exposed pad) when placing high-activity DSP blocks.
The CQ352 ceramic column grid array requires a dedicated 352-pad land pattern with controlled aspect-ratio fillets for solder-column attachment. Confirm column pitch and pad geometry against the Microchip package drawing before layout release, and plan rework strategy early - ceramic-column flight parts are effectively non-reworkable, so first-pass assembly yield is essential.
Compliance Information
Space-flight-grade hermetic ceramic part; RoHS/REACH status not stated in verified data. Consult Microchip material declarations for this MPN.
