RTAX2000S-1CQ352PROTO - Rad-Tolerant FPGA 2M Gates | Microchip
MPN: RTAX2000S-1CQ352PROTO ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
RTAX2000S-1CQ352PROTO Overview
A radiation-tolerant FPGA is a field-programmable gate array engineered to survive and operate reliably in space-flight radiation environments, where total ionizing dose (TID) and single-event effects would degrade or destroy standard commercial silicon. Within the power-management hierarchy of avionics electronics, these devices occupy the top reliability tier above standard and military-grade FPGAs, sitting in the broader taxonomy of programmable logic: FPGA -> radiation-tolerant FPGA -> space-grade programmable logic IC.
Key differentiating features of the RTAX-S family include low-power operation, a true single-chip form factor (no configuration PROM required at startup), and live-at-power-up behavior enabled by antifuse programmability. Unlike SRAM-based FPGAs, the antifuse architecture is one-time programmable, so configuration data is inherently immune to configuration upsets and the device is functional immediately when power is applied - a critical property for spacecraft that cannot tolerate a configuration reload cycle.
Architecturally, the RTAX2000S is fabricated in a CMOS process and organizes its ~2 million gates across logic modules, embedded SRAM blocks, and I/O clusters. Designers implement radiation-hardening-by-design techniques at the system level, typically combining the RTAX-S fabric with external triple-module-redundancy (TMR) schemes supported by Microchip's Libero design suite and Hi-Rel mitigation flows.
Typical applications include satellite payload processing, spacecraft bus control, telemetry and telecommand interfaces, and launch-vehicle avionics - anywhere complex logic must operate for years in orbit. The PROTO suffix denotes engineering/prototype hardware intended for design development and system validation rather than flight lots.
A key design consideration: PROTO devices must not be substituted for qualified flight units in final flight hardware; flight programs should transition to the corresponding V (flight) suffix part. This page consolidates verified specifications, drop-in family alternatives, and procurement guidance beyond what distributor listings typically show.
Drop-in alternatives for RTAX2000S-1CQ352PROTO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with RTAX2000S-1CQ352PROTO (same form factor and footprint) — differing in Package, Configuration, Equivalent System Gates, Logic Cells, Embedded Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
RTAX2000SL-1CQ352PROTO
✅ Drop-In✓ In Stock
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View Datasheet →RTAX2000S-1CQ352V
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View Datasheet →RTAX2000D-1CQ352B
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$3120 / Unit
View Datasheet →RTAX2000D-1CQ352V
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$3950 / Unit
View Datasheet →RTAX4000SL-1CQ352V
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3600 / Unit
View Datasheet →RTAX4000SL-CQ352PROTO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →RTAX2000S-1CQ352PROTO Maximum Ratings & Electrical Characteristics
| Family | RTAX-S Radiation-Tolerant FPGA |
| Series | RTAX2000S |
| Configurable Logic Blocks (CLBs) | 21504 |
| Equivalent System Gates | 2000000 |
| Process Technology | CMOS |
| Programmability Type | Antifuse (one-time programmable) |
| Configuration | Live at power-up, single chip |
| Speed Grade | -1 |
| Device Designation | PROTO (prototyping / engineering) |
| Temperature Grade | C (commercial) |
| Package | CQFP352 (ceramic quad flat pack, 352 leads) |
| Mounting Type | Surface Mount |
| Radiation Tolerance | Radiation-tolerant (space-flight qualified family) |
RTAX2000S-1CQ352PROTO cqfp352 (ceramic quad flat pack, 352 leads) Pin Configuration Guide
Pin configuration for RTAX2000S-1CQ352PROTO (cqfp352 (ceramic quad flat pack, 352 leads) 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 RTAX2000S-1CQ352PROTO.
Refer to the datasheet for full pin configuration.
Typical Applications
RTAX2000S-1CQ352PROTO is suitable for 6 applications: Satellite Payload Processing, Spacecraft Bus Control, Telemetry and Telecommand Interfaces, Launch Vehicle Avionics, Space Instrumentation and Science Payloads, New Space / Small Satellite Development.
Satellite Payload Processing
The RTAX2000S-1CQ352PROTO fits satellite payload processing because its 21,504 CLB / ~2M-gate capacity accommodates payload data formatting, compression preprocessing, and interface bridging, while the antifuse fabric delivers live-at-power-up operation with no configuration memory to upset. In a typical payload chain, the FPGA sits between the payload sensor or transceiver and the onboard computer, implementing LVDS/CMOS interface glue, FIFOs, and protocol framing. Because the device is PROTO-grade hardware, it is ideal for payload engineering models and EM (engineering model) units during integration and test; flight builds should migrate to the V-suffix flight part in the same CQFP352 footprint, preserving the PCB layout and design netlist.
Recommended
Spacecraft Bus Control
Spacecraft bus controllers benefit from the RTAX2000S-1CQ352PROTO's single-chip, live-at-power-up antifuse architecture: attitude control interfaces, power distribution switching logic, and mode-control state machines are active the instant power is applied, with no configuration reload window. The ~2M equivalent gate capacity hosts multiple independent bus functions - e.g., MIL-STD-1553-style interface glue, discrete I/O conditioning, and watchdog functions - in one radiation-tolerant device. Low static power matters on battery-limited launch and eclipse phases, and the ceramic CQFP352 package supports the solder joints and thermal cycling of launch environments. Use the PROTO device for bus avionics engineering models, then transition designs unchanged to the RTAX2000S-1CQ352V flight unit.
Recommended
Telemetry and Telecommand Interfaces
Telemetry/telecommand (TM/TC) front ends demand predictable, deterministic logic that survives total ionizing dose and single-event effects - exactly the RTAX-S design point. The RTAX2000S-1CQ352PROTO implements frame synchronizers, encoders/decoders, and housekeeping multiplexers across its 21,504 CLBs, while its antifuse configuration eliminates configuration-upset-driven link drops. The CQFP352 ceramic package provides the lead count needed for redundant TM/TC channel interfaces and cross-strapping. Because the PROTO part matches the flight CQFP352V footprint, ground-station test jigs and EGSE built around the PROTO device transfer directly to flight hardware, shortening verification cycles for telemetry chains and command decoders.
Recommended
Launch Vehicle Avionics
Launch-vehicle avionics require logic that is guaranteed alive at power-up within seconds of battery activation and tolerant of the high-vibration, radiation-rich ascent environment. The RTAX2000S-1CQ352PROTO's antifuse fabric is inherently immune to configuration upsets, and its CMOS construction keeps power budgets compatible with vehicle battery rails. Typical roles include sequencer control, stage-separation interlock logic, and sensor data aggregation feeding flight computers. The ceramic CQFP352 package provides robust leaded attachment for high-shock environments. PROTO-class devices support stage avionics integration benches and hardware-in-the-loop testing; production stages use the identically-footprinted flight-grade RTAX2000S-1CQ352V, reusing both PCB and design assets.
Recommended
Space Instrumentation and Science Payloads
Science instruments - imagers, spectrometers, particle detectors - use the RTAX2000S-1CQ352PROTO as detector readout and data-path conditioning logic. The ~2M-gate fabric accommodates correlated double sampling control, high-speed serial formatting, and instrument sequencing, while the radiation-tolerant CMOS process sustains multi-year missions through belt crossings and solar events. Live-at-power-up behavior simplifies instrument safe-mode design: the FPGA is functional before software boots, enabling autonomous fault response. Engineering-model instruments programmed on the PROTO device validate timing and data integrity; identical designs load into the same-footprint RTAX2000S-1CQ352V flight device, so calibration results from the EM instrument carry over to flight hardware with no board respin.
Recommended
New Space / Small Satellite Development
Small-sat and cubesat programs increasingly adopt RTAX-S FPGAs for missions previously served by commercial parts, and the PROTO designation makes the RTAX2000S-1CQ352PROTO attractive for rapid development cycles. Its 21,504 CLB capacity covers onboard data handling, ADCS interface logic, and payload prototyping within one chip, while antifuse live-at-power-up operation removes bootloader complexity from flight software teams. The -1 speed grade suits the moderate clock rates typical of small-sat data handling, keeping power draw low. Teams can validate boards and FPGA designs on PROTO units, then order the pin-identical RTAX2000S-1CQ352V for flight lots, de-risking schedule without redesigning the CQFP352 PCB footprint.
Recommended
Recommended Products Summary
Engineering reference data for RTAX2000S-1CQ352PROTO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX2000SL-1CQ352PROTO | RTAX2000S-1CQ352V | RTAX2000D-1CQ352B | RTAX4000SL-1CQ352V |
|---|---|---|---|---|---|
| Package | CQFP352 | CQFP352 - same | CQFP352 - same | CQFP352 - same | CQFP352 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Logic Capacity | 21504 CLBs / ~2M gates | RTAX2000-class (~2M gates) | 21504 CLBs / ~2M gates | RTAX2000-class (~2M gates) | RTAX4000-class (higher density) |
| Programmability | Antifuse (OTP), live at power-up | Antifuse (OTP) | Antifuse (OTP) | Flash-based (reprogrammable) | Antifuse (OTP) |
| Device Flow | PROTO (engineering) | PROTO (engineering) | V (flight-grade) | B (flight flow variant) | V (flight-grade) |
| Speed Grade | -1 | -1 | -1 | -1 | -1 |
| Temperature Grade | C (commercial) | C | V flow per Microchip screening | B flow per Microchip screening | V flow per Microchip screening |
| Radiation Tolerance | Radiation-tolerant (RTAX-S family) | Radiation-tolerant (RTAX-SL) | Radiation-tolerant (RTAX-S) | Radiation-tolerant (RTAX-D) | Radiation-tolerant (RTAX-SL) |
Key Differentiators
- True single-chip, live-at-power-up operation (vs RTAX2000D-1CQ352B)
- Direct flight-grade migration path (vs RTAX2000S-1CQ352V)
- Trade-off: one-time programmable (vs RTAX2000D-1CQ352B)
Design Notes
Do not install RTAX2000S-1CQ352PROTO devices in flight hardware. The PROTO designation identifies prototype/engineering flow units for board bring-up, design validation, and EGSE development. Flight builds must use the corresponding flight-flow device (e.g., RTAX2000S-1CQ352V), which shares the same die and CQFP352 footprint so no PCB respin is needed. Mixing PROTO units into flight lots is a common audit finding in hi-rel programs.
Because RTAX-S antifuse FPGAs are one-time programmable, timing closure must be fully verified in simulation and static timing analysis before programming. Use Microchip's Libero SoC design suite timing reports for the -1 speed grade and budget margin for the radiation-tolerant derating factors specified in the RTAX-S/SL datasheet. There is no opportunity to re-fit a design after programming a failed-timing device, so over-constrain critical clock domains during implementation.
The CQFP352 ceramic package has leads on all four sides and is surface mounted; use a footprint matching the JEDEC-style CQFP352 land pattern from the Microchip RTAX-S/SL datasheet package section. For space applications, consider lead-forming and underfill practices appropriate to launch vibration, and route controlled-impedance signals on inner layers with solid reference planes to support the I/O and core supply integrity of the -1 speed grade design.
Compliance Information
Hi-rel space-grade ceramic package devices typically have special compliance declarations; obtain RoHS/exemption status directly from Microchip hi-rel product documentation.
