RTAX250S-CQ352V - 250K-Gate Rad-Tolerant FPGA CQFP-352 | Microchip
N.º de pieza: RTAX250S-CQ352V ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
RTAX250S-CQ352V Descripción general
A radiation-tolerant FPGA is a programmable logic device qualified to survive the total ionizing dose (TID) and single-event effects encountered in orbital and deep-space environments. Within the power-management-free space-flight signal chain, the FPGA sits above board-level housekeeping ICs and provides the primary digital processing, telemetry formatting, and control-sequencing capability of a spacecraft payload or platform.
Key differentiating features include true single-chip form factor (no external configuration device required), live-at-power-up operation enabled by the antifuse architecture, and low static power consumption, which combine to make RTAX-S the FPGA of choice for space designers according to Microchip product literature.
Technically, the RTAX-S uses a 0.15 um antifuse-based CMOS process with a sea-of-modules fabric; once programmed, connections are permanent and immune to configuration upsets, an architectural advantage over SRAM FPGAs in orbit where configuration memory is vulnerable to single-event upsets (SEU).
Typical applications include satellite avionics and payload data processing, radiation-tolerant telemetry and telecommand interfaces, and instrument control on low-Earth-orbit and deep-space missions where TID tolerance and single-chip implementation are mandatory.
Design consideration: because the antifuse fabric is one-time programmable, full functional verification must be completed in prototyping (for example with the commercial Axcelerator flow and PROTO devices described in the Microchip AC170 application note) before flight programming.
This page synthesizes verified distributor data, drop-in alternatives within the same CQ352 footprint, and space-design guidance not found on a single manufacturer page.
Alternativas directas para RTAX250S-CQ352V — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con RTAX250S-CQ352V (mismo factor de forma y huella) — difiere en Package, Family, Logic Cells, Equivalent System Gates, Radiation Tolerance.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
RTAX250S-1CQ352V
✅ Sustitución directa✓ En stock
$1395 / unidad
Ver hoja de datos →RTAX250SL-CQ352V
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →RTAX250SL-1CQ352V
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →RTAX1000SL-CQ352V
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →RTAX250S-CQ352V Valores máximos y características eléctricas
| Family | RTAX-S (Radiation-Tolerant FPGA) |
| Equivalent System Gates | 250000 gates |
| Logic Cells | 4224 |
| CLBs | 2816 |
| Process Technology | 0.15 um CMOS |
| Core Supply Voltage | 1.5 V nominal (1.425 V to 1.575 V) |
| Maximum Frequency | 649 MHz |
| Encapsulado | 352-Pin CQFP (Ceramic Quad Flat Pack) |
| Tipo de montaje | Surface Mount |
| Programming Technology | Antifuse (one-time programmable) |
| Speed Grade | Standard (blank suffix) |
| Radiation Tolerance | Radiation-tolerant (space-flight qualified) |
| Configuration | Single-chip, live at power-up |
Guía de configuración de pines de RTAX250S-CQ352V 352-pin cqfp (ceramic quad flat pack)
Configuración de pines para RTAX250S-CQ352V (encapsulado 352-pin cqfp (ceramic quad flat pack)). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para RTAX250S-CQ352V.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
RTAX250S-CQ352V es adecuado para 6 aplicacións: Satellite Avionics and Platform Control, Payload Data Processing, Telemetry and Telecommand Interfaces, Instrument Control and Sequencing, Space Flight Reprogrammable Prototyping Flow, Deep-Space and High-Radiation Missions.
Satellite Avionics and Platform Control
The RTAX250S-CQ352V fits spacecraft avionics because it combines 250,000 usable system gates with live-at-power-up antifuse configuration, eliminating the boot failure modes associated with SRAM FPGAs and external configuration memories. In a platform computer, it typically implements the housekeeping state machine, mode transitions, redundant two-out-of-three voting logic, and MIL-STD-style serial telecommand/telemetry interfaces at modest clock rates well within its 649 MHz fabric capability. The hermetic 352-pin CQFP withstands launch vibration and thermal vacuum cycling better than plastic packaging. Because it draws low static power on a 1.5 V nominal core (1.425 V to 1.575 V), it suits solar- and battery-powered buses with tight power budgets. Designers verify the logic in the Axcelerator prototyping flow (application note AC170) before programming the OTP flight unit.
Recomendado
Payload Data Processing
For imaging, spectroscopy, and scientific payloads, the RTAX250S-CQ352V provides glueless framing, buffering, and front-end formatting logic between sensors and downlink chains. Its 4,224 logic cells (2,816 CLBs) absorb functions such as CRC generation, packetization, and interface bridging, while the standard speed grade covers the tens-of-MHz to low-hundreds-of-MHz clock domains typical of payload processing. Because the antifuse fabric configuration is immune to single-event configuration upsets, only user registers need SEU mitigation such as triple-module redundancy, simplifying the reliability analysis. The 1.5 V core supply (1.425 V to 1.575 V) supports low-power continuous operation in orbit. The CQFP-352 hermetic ceramic package with surface mounting provides the trackability and screening heritage required by space payload integrators for flight-lot acceptance.
Recomendado
Telemetry and Telecommand Interfaces
The RTAX250S-CQ352V is well matched to TM/TC subsystems because these functions demand modest logic capacity but very high configuration reliability. The device implements telemetry formatters, command decoders, and time-tagging counters at the protocol clock rates involved, comfortably within the 649 MHz fabric ceiling. Live-at-power-up behavior matters here: telemetry and safety channels are available immediately when the spacecraft powers on, without any configuration load time or boot sequencing, a property Microchip explicitly cites for the RTAX-S family. The 352-pin CQFP offers enough I/O to bond out redundant command cross-straps, multiple serial interfaces, and dedicated test pins required by failure-tolerant TM/TC architectures. Designers typically pair the FPGA with rad-tolerant power and supervisor components on the same flight board.
Recomendado
Instrument Control and Sequencing
Science instruments on LEO and deep-space missions use the RTAX250S-CQ352V as the sequencing and control controller: driving detector clocks, coordinating analog-front-end sampling, and enforcing interlock logic. The antifuse, one-time-programmable nature of the fabric means once sequencer logic is verified it cannot be corrupted in flight, which is critical for instruments with high-voltage or cryogenic subsystems where erroneous clocks cause damage. The 1.5 V nominal supply with 1.425 V to 1.575 V tolerance simplifies clean power-tree design for noise-sensitive analog sections. Its 250K-gate capacity is sufficient for most instrument sequencers, while the CQFP-352 package provides the hermeticity and pin count for redundant control lines. Sequencer designs are prototyped on commercial Axcelerator parts per Microchip AC170 before flight programming.
Recomendado
Space Flight Reprogrammable Prototyping Flow
Although the RTAX250S-CQ352V itself is OTP, it anchors a documented prototyping ecosystem. Microchip application note AC170 and the RTAX-S/SL datasheet describe a flow that targets the RTAX-S design to the equivalent commercial Axcelerator device, using Extender circuit boards that map the commercial package footprint to the RTAX-S CQ352 package. Aldec, in partnership with Microchip, additionally offers flash-based ProASIC3E adaptor solutions (such as the ACT-H3Ki-CQ352, footprint-compatible with CQ352 RTAX parts) enabling iterative, reprogrammable verification. Teams therefore develop, simulate, and iterate on reprogrammable silicon, then commit the verified netlist once to the RTAX250S-CQ352V flight device, minimizing the risk inherent in one-time programming of expensive space-grade parts.
Recomendado
Deep-Space and High-Radiation Missions
For missions beyond low-Earth orbit, where TID accumulation and single-event fluxes are severe, the RTAX250S-CQ352V offers an architecture-level advantage: permanent antifuse interconnect cannot suffer configuration memory upsets, the dominant failure mechanism of SRAM FPGAs in deep space. Microchip markets RTAX-S as the FPGA of choice for space-flight systems, citing low power, single-chip form factor, and live-at-power-up operation. The 250K-gate density suits autonomy logic, fault-management computers, and interface bridges in cruise-stage and probe electronics. The 0.15 um CMOS process and 1.5 V core operation keep dynamic power low over multi-year missions. Program offices should obtain the family TID and SEE test data package from Microchip space products to close radiation design margins for the specific trajectory.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para RTAX250S-CQ352V — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | RTAX250S-1CQ352V | RTAX250SL-CQ352V | RTAX250SL-1CQ352V | RTAX1000SL-CQ352V |
|---|---|---|---|---|---|
| Package | CQFP-352 | CQFP-352 - same | CQFP-352 - same | CQFP-352 - same | CQFP-352 - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Equivalent System Gates | 250000 | 250000 | 250000 | 250000 | 1000000 |
| Speed Grade | Standard (blank) | 1 (~15% faster) | Standard (blank) | 1 (~15% faster) | Standard (blank) |
| Family / Process | RTAX-S, 0.15 um CMOS | RTAX-S, 0.15 um CMOS | RTAX-SL, 0.15 um CMOS | RTAX-SL, 0.15 um CMOS | RTAX-SL, 0.15 um CMOS |
| Core Supply Voltage | 1.5 V (1.425 V - 1.575 V) | 1.5 V (1.425 V - 1.575 V) | 1.5 V (1.425 V - 1.575 V) | 1.5 V (1.425 V - 1.575 V) | 1.5 V (1.425 V - 1.575 V) |
| Radiation Tolerance | Radiation-tolerant (RTAX-S) | Radiation-tolerant | Radiation-tolerant (SL) | Radiation-tolerant (SL) | Radiation-tolerant (SL) |
| Availability on XAIPART | Product page available | Product page available | Product page available | Product page available | Product page available |
Diferenciadores clave
- Identical die, faster timing without board change (frente a RTAX250S-1CQ352V)
- SL low-power process option on same footprint (frente a RTAX250SL-CQ352V)
- Fourfold capacity headroom without PCB respin (frente a RTAX1000SL-CQ352V)
Notas de diseño
The RTAX250S-CQ352V is one-time programmable (OTP antifuse). Never program a flight unit without completing full functional verification, timing closure, and simulation sign-off. Microchip application note AC170 documents the recommended flow: target the design to the equivalent commercial Axcelerator device (e.g., AX250) with Extender boards mapping the commercial package to the RTAX-S CQ352 footprint, or use the non-hermetic RTAX250S-1CQ352PROTO device that carries the same functional characteristics as the flight unit. Budget schedule time for this verification cycle; OTP errors require a new flight part.
Design the core rail for 1.5 V nominal with 1.425 V to 1.575 V tolerance per the RTAX-S datasheet. Actual current depends on the placed design, so run Microchip Libero power estimation on the final netlist rather than assuming worst-case die current - this avoids over-sizing the space-qualified point-of-load converter. Add bulk and 0.1 uF decoupling at each CQFP power pin pair with short, wide traces, and verify rail sequencing and inrush behavior of upstream rad-tolerant regulators under cold-start at minimum input voltage.
The 352-pin CQFP has relatively long, inductive leads compared to area-array packages; keep I/O edge rates and trace stubs controlled for interfaces above roughly 100 MHz, and series-terminate lines routed to off-board loads. Assign JTAG and dedicated configuration/programming pins early in schematic capture so boundary-scan access is preserved on the assembled board. Follow Microchip RTAX-S design and layout guidance for I/O bank assignment, and account for the hermetic ceramic package's mechanical bonding requirements (lead-forming and solder profile) during board assembly planning.
Información de cumplimiento
Space-grade hermetic ceramic-packaged FPGA; compliance declarations for RoHS/REACH/lead content are not stated in the provided web data and must be requested from Microchip space products documentation.
