RTAX250SL-CG624B - 250K Rad-Tolerant FPGA 624-CCGA | Microchip
MPN: RTAX250SL-CG624B β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4850 | $4,850.00 |
| 10 | $4620 | $46,200.00 |
| 100 | $4380 | $438,000.00 |
| 500 | $4150 | $2,075,000.00 |
| 1,000 | $3950 | $3,950,000.00 |
Drop-in alternatives for RTAX250SL-CG624B β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
RTAX250SL-1CG624B
β Drop-Inπ Reference alternative (not in catalog)
RTAX250SL-CGS624B
β Drop-Inπ Reference alternative (not in catalog)
RTAX250SL-1CGS624B
β Drop-Inπ Reference alternative (not in catalog)
RTAX250S-CG624B
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
RTAX250SL-LG624B
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$2380 / Unit
View Datasheet βRTAX250SL-CG624B Maximum Ratings & Electrical Characteristics
| Family | RTAX-SL (Radiation-Tolerant FPGA) |
| Equivalent System Gates | 250000 gates |
| Logic Cells / CLBs | 2816 cells |
| Maximum Clock Frequency | 649 MHz |
| Combinatorial Delay (CLB) | 0.930 ns max |
| Process Technology | 0.15 um antifuse |
| Core Supply Voltage | 1.5 V |
| Package | 624-ball CCGA (CG624) |
| Mounting Type | Surface Mount |
| Configuration Technology | Antifuse (single-chip, live at power-up) |
| Embedded Memory | Embedded SRAM with FIFO control logic |
| Radiation Tolerance | Radiation-tolerant (space-flight grade) |
| Programmability Type | Field Programmable Gate Array (one-time programmable) |
RTAX250SL-CG624B 624-ball ccga (cg624) Pin Configuration Guide
Complete pinout information for RTAX250SL-CG624B (624-ball ccga (cg624) 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 RTAX250SL-CG624B.
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
RTAX250SL-CG624B is suitable for 6 applications: Satellite On-Board Data Handling, Payload Signal Processing, Command and Telemetry Systems, Radiation-Exposed Avionics, Space Bus Interface and Glue Logic, Earth Observation Instrument Control.
Satellite On-Board Data Handling
The RTAX250SL-CG624B fits spacecraft on-board computer and data-handling units because its antifuse configuration is immune to single-event configuration upsets, eliminating the scrubbing hardware an SRAM FPGA would require. With 250,000 gates and 2816 CLBs organized through chip-wide highway routing, the device implements command decoders, telemetry formatters, and bus interfaces (e.g., MIL-STD-1553, SpaceWire glue logic) in one 1.5 V core device. Live-at-power-up behavior means the OBC logic is functional the instant spacecraft power is applied, supporting autonomous FDIR recovery flows. The embedded SRAM with FIFO control logic buffers housekeeping data streams, while the 649 MHz family timing ceiling leaves ample margin for conventional bus-rate interfaces. Designers should budget the 0.930 ns maximum CLB combinatorial delay when closing timing on high-rate paths and reserve the segmentable clock resources to isolate payload clocking from the data-handling domain.
Recommended
Payload Signal Processing
In instrument and communications payloads, the RTAX250SL-CG624B implements front-end DSP functions such as decimation filters, FFT pre-processing, framing, and packetization. Dedicated carry logic accelerates adder/accumulator chains, and the 0.15 um process timing (0.930 ns CLB combinatorial delay) supports pipelined arithmetic at high throughput, with a family maximum clock of 649 MHz for the fastest paths. The antifuse fabric contributes no configuration-upset failure mode, a significant advantage for payloads that cannot tolerate controller resets during science acquisition. Embedded SRAM blocks with built-in FIFO control serve as ping-pong buffers between acquisition and downlink chains without external memory. Because the device is one-time programmable, freeze the netlist early and use footprint-compatible prototyping per Microchip's RTAX prototyping application note before committing flight devices. Thermally, space-flight conduction-cooled assemblies should verify power against mission worst-case clock activity rather than family headline numbers.
Recommended
Command and Telemetry Systems
Spacecraft command and telemetry units benefit from the RTAX250SL-CG624B's deterministic, fixed netlist: once programmed, routing and timing are identical on every flight unit, simplifying verification for mission assurance. The 250K-gate capacity covers frame synchronizers, CRC/hash engines, decoders for uplink command formats, and time-tag distribution logic, while segmentable clocks let designers quarantine the time-critical timing chain from noisier data paths. The 1.5 V core and 0.15 um antifuse process keep static power low - important for telemetry units that remain powered through eclipse and safe-mode. Live-at-power-up operation guarantees the telemetry path is observable during the first milliseconds after switch-on, aiding launch and early-orbit operations. Implement input protection and voting (TMR at the RTL level) for single-event-effect-sensitive registers per the Microchip RTAX-S/SL design guidance, since antifuse immunity covers configuration, not user flip-flops.
Recommended
Radiation-Exposed Avionics
Launch vehicles, reentry systems, and high-altitude platforms encounter radiation environments where commercial FPGAs upset frequently. The RTAX250SL-CG624B addresses these avionics needs with a radiation-tolerant 0.15 um antifuse fabric that cannot lose its configuration, plus 2816 CLBs of user logic for flight-control glue, sensor interface conditioning, and redundancy management. The 624-ball CCGA package's solder columns provide mechanical compliance for vibration and thermal-cycling environments typical of flight hardware, and ceramic packaging supports the outgassing and workmanship expectations of space avionics programs. Because the device is live at power-up, flight-critical safety functions are available immediately without configuration load delay - a requirement in many ascent-phase architectures. Designers should pair the FPGA with watchdog supervision at system level and apply Microchip's SEE mitigation application notes for user-logic hardening, as antifuse protection applies to the configuration layer only.
Recommended
Space Bus Interface and Glue Logic
Modern spacecraft integrate mixed-vintage subsystems; the RTAX250SL-CG624B serves as the protocol-bridging fabric between legacy MIL-STD-1553, CAN, UART, and custom serial links and newer payload digital interfaces. With 250,000 gates and chip-wide highway routing, multiple independent bridges fit in a single device, reducing part count on radiation-exposed boards - each removed commercial component is one less SEE risk. The 649 MHz family clock ceiling and 0.930 ns CLB delay easily cover all conventional spacecraft bus rates, so timing closure is dominated by I/O constraints rather than internal logic depth. Embedded SRAM/FIFO blocks provide rate-buffering between asynchronous clock domains without external memories. The 624-ball CCGA footprint provides generous I/O for multi-bus systems. Fix the netlist under formal configuration control so each bridge's timing remains constant across flight lots, and validate I/O standards and drive strength in Microchip Libero constraints before board release.
Recommended
Earth Observation Instrument Control
Cameras, spectrometers, and scatterometers on Earth-observation satellites need deterministic sequencing, detector-clock generation, and high-rate data formatting - workloads well matched to the RTAX250SL-CG624B's 250K gates, 2816 CLBs, and embedded SRAM FIFOs. The antifuse fabric guarantees the instrument control sequence cannot be corrupted in orbit, protecting irreplaceable acquisition opportunities during imaging passes. The 1.5 V core reduces the FPGA's share of instrument power budgets, and live-at-power-up operation simplifies the instrument's turn-on sequencing. Segmentable clocks let detector clocking, control, and downlink domains run from isolated timing trees. Implement detector bias sequencing and safety interlocks in the FPGA with TMR on safety-critical flags, per Microchip RTAX-S/SL reliability guidance, since user registers - not the antifuse configuration - are the SEE-sensitive elements. Plan the CCGA624 land pattern and X-ray inspection criteria early, as ceramic column arrays dominate the assembly cost of the controller board.
Recommended
Recommended Products Summary
Engineering reference data for RTAX250SL-CG624B β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX250SL-1CG624B | RTAX250SL-CGS624B | RTAX250SL-1CGS624B | RTAX250S-CG624B | RTAX250SL-LG624B |
|---|---|---|---|---|---|---|
| Package | CCGA-624 (CG624) | CCGA-624 - same | CCGA-624 - same | CCGA-624 - same | CCGA-624 - same | 624-position ceramic - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microsemi (Microchip) | Microsemi (Microchip) | Microchip Technology | Microchip Technology |
| Equivalent System Gates | 250,000 | 250,000 | 250,000 | 250,000 | 250,000 | 250,000 |
| Logic Cells / CLBs | 2816 | 2816 | 2816 | 2816 | 2816 | 2816 |
| Maximum Clock Frequency | 649 MHz (family) | 649 MHz (family) | 649 MHz (family) | 649 MHz (family) | 649 MHz (family) | 649 MHz (family) |
| Speed Grade | Standard | -1 (faster) | Standard | -1 (faster) | Standard | Standard |
| Assembly / Termination Flow | Standard ceramic column | Standard ceramic column | S-suffix lead-free flow | S-suffix lead-free flow | Standard ceramic column | [DATA_NEEDED] |
| Core Supply Voltage | 1.5 V | 1.5 V | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
| Configuration Technology | Antifuse (single-chip, live at power-up) | Antifuse | Antifuse | Antifuse | Antifuse | Antifuse |
Key Differentiators
- Configuration-upset immunity from antifuse fabric (vs RTAX250S-CG624B)
- Higher performance without redesign (vs RTAX250SL-CGS624B)
- Lead-free assembly option on the same footprint (vs RTAX250SL-CG624B (non-S))
- Trade-off: one-time programmability (vs RTAX250SL-1CG624B)
Design Notes
The CCGA624 package uses solder columns, not solder spheres. Land patterns must be designed for high-lead column reflow per the Microchip RTAX-S/SL datasheet package section and IPC-class space workmanship requirements of your program. Provide X-ray inspection access beneath the device, since column solder joints cannot be visually verified. Use symmetric thermal relief on column lands to prevent tombstoning during reflow, and qualify a rework procedure before flight build - CCGA rework requires specialized nozzles and column re-attachment tooling.
Antifuse devices are one-time programmable: the configured netlist routing and timing are frozen and identical on every unit, which aids verification, but a design change requires new programmed parts with associated programming lead time. Freeze the RTL, run Microchip Libero place-and-route, and lock the netlist under configuration control well before the flight-lot programming date. Also remember that radiation tolerance covers the configuration layer; user flip-flops remain SEE-sensitive and require TMR or EDAC per Microchip's RTAX reliability application notes.
The RTAX250SL uses a 1.5 V core with a 0.15 um antifuse process that draws low static power, but dynamic power scales with clock activity and toggle rate. Estimated: for flight power budgets, calculate dynamic power from your post-place-and-route simulation activity files using Microchip's power estimator rather than family headline figures. Sequence the 1.5 V core and I/O rails per the datasheet power-up specification and verify inrush into the CCGA624's decoupling network with measured ESR values on flight-lot capacitors.
With 624 columns and high user-I/O density, manage return paths by assigning solid ground reference planes under every I/O bank and keeping spaceflight bus interfaces (1553, SpaceWire-class links) on length-matched, impedance-controlled routing. Estimated: maintain your program's specified differential impedance (commonly 100 ohm) on paired I/O and reserve the FPGA's segmentable clock resources to isolate detector or bus clocking from switching noise on adjacent banks, per the clocking chapter of the RTAX-S/SL datasheet.
Compliance Information
Space-grade ceramic CCGA package; standard CG624B termination and S-suffix lead-free variants exist (RTAX250SL-CGS624B). AEC-Q100 is not applicable to this space-flight product. Extract formal RoHS/REACH declarations from Microchip product pages before contract.
