RTAX250S-CQ208V - 250K Gate Rad-Tolerant FPGA CQFP-208 | Microchip
MPN: RTAX250S-CQ208V ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for RTAX250S-CQ208V — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
RTAX250SL-CQ208V
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
RTAX250S-1CQ208V
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1320 / Unit
View Datasheet →RTAX250S-CQ208PROTO
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View Datasheet →RTAX250SL-1CQ208PROTO
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View Datasheet →RTAX250S-CQ208PROTO
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View Datasheet →RTAX250S-CQ208V Maximum Ratings & Electrical Characteristics
| Family | RTAX-S Radiation-Tolerant FPGA |
| System Gates | 250,000 |
| ASIC Gate Equivalent | 30,000 |
| Logic Cells | 2,816 |
| Maximum Frequency | 649 MHz |
| Process Technology | 0.15 um CMOS |
| Core Supply Voltage | 1.5 V |
| Package | 208-Pin CQFP (Ceramic Quad Flat Pack) |
| Package Qualification Suffix | V (space-level screening) |
| Configuration Technology | Anti-fuse OTP |
| Live at Power-Up | Yes |
| Radiation Tolerance | Radiation-tolerant (space-flight qualified family) |
| Mounting Type | Surface Mount |
| RoHS Status | unknown |
RTAX250S-CQ208V v (space-level screening) Pin Configuration Guide
Complete pinout information for RTAX250S-CQ208V (v (space-level screening) 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 RTAX250S-CQ208V.
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
RTAX250S-CQ208V is suitable for 6 applications: Satellite Payload Data Processing, Spacecraft Command and Data Handling (C&DH), Instrument Control and Glue Logic on Orbital Platforms, Telemetry Encoding and Downlink Formatting, GNSS / Radio Front-End Logic for Spacecraft, Deep-Space Probe FPGA Reuse and Upgrade Path.
Satellite Payload Data Processing
The RTAX250S-CQ208V fits satellite payload data processing because its 250,000 gates, 2,816 logic cells, and 649 MHz maximum toggle rate support the pipelined DSP paths used for image compression, filtering, and on-board encryption, while the anti-fuse fabric keeps the configuration immune to single-event upsets. In a typical payload chain the FPGA sits between the sensor or ADC front end and the downlink formatter, implemented as registered vsModule pipelines with banked SRAM/FIFO blocks for buffering. Unlike an SRAM FPGA, it needs no radiation-exposed configuration memory and is live at power-up, simplifying the spacecraft power-on sequence. The trade-off is OTP configuration: use the AC170 prototyping flow on AX250S fabric to fully verify the design before flight-lot programming.
Recommended
Spacecraft Command and Data Handling (C&DH)
For command and data handling, the RTAX250S-CQ208V is attractive because live-at-power-up operation means the spacecraft bus logic is functional the instant power is applied, with no boot delay or external boot device that could be damaged by radiation. Its 250K gates accommodate CCSDS telemetry/telecommand framing, watchdog and housekeeping logic, and memory-controller glue logic around rad-tolerant SRAM. The 1.5V core keeps static power low for eclipse-period energy budgets. Designers typically implement the C&DH state machines in the anti-fuse fabric for SEU-immune sequencing and add TMR/scrubbing in RTL for critical registers. The V-screened CQFP-208 package supports the hermetic, flight-qualified assembly flows required by C&DH boards.
Recommended
Instrument Control and Glue Logic on Orbital Platforms
Spaceborne science instruments need deterministic control logic that survives total ionizing dose over mission life, and the RTAX250S-CQ208V provides this with its rad-tolerant 0.15um CMOS fabric in a hermetic ceramic CQFP-208 package. Typical roles include instrument sequencer, ADC/DAC interface timing, motor/filter-wheel control, and bus bridging to a MIL-STD-1553 or SpaceWire companion device. The anti-fuse interconnect introduces deterministic timing with no configuration-upset downtime, important for instruments that cannot tolerate reconfiguration pauses during observations. With 250K gates there is headroom to integrate both control and pre-processing, reducing part count. Prototype the interface logic on the pin-compatible AX250S-CQ208 before committing the one-time-programmable flight device.
Recommended
Telemetry Encoding and Downlink Formatting
The 649 MHz internal performance of the RTAX250S-CQ208V makes it well suited to telemetry encoding and downlink formatting, where convolutional/LDPC-style encoding stages and parallel framing logic must sustain high serial throughputs from a 1.5V, low-static-power fabric. In the transmission chain the FPGA typically receives parallel science data from the payload, applies channel encoding, CCSDS framing, and pseudo-randomization, then drives the modulator interface. Anti-fuse configuration keeps the encoder behavior fixed and upset-immune during ground-contact passes where link interruption recovery matters. Banked SRAM blocks implement FIFO elasticity between the payload clock domain and the downlink clock domain, and the AC170 prototyping flow on AX fabric de-risks the timing closure before OTP programming.
Recommended
GNSS / Radio Front-End Logic for Spacecraft
Radiation-tolerant GNSS receivers and radio front ends need glue logic that digitizes correlator outputs, timestamps pulses, and interfaces to the spacecraft time base, all in a SEU-robust fabric. The RTAX250S-CQ208V serves this role with 2,816 logic cells and 649 MHz capability, implementing correlator accumulators, pulse-per-second conditioning, and microsecond-accurate time-tag registers on the anti-fuse fabric whose routing cannot be corrupted by upsets. Its single-chip form factor eliminates the configuration-memory component that would otherwise sit adjacent to the sensitive RF/digital boundary. The 1.5V core supports power-limited LEO platforms, and the hermetic CQFP-208 suits the thermal-vacuum and vibration environments of launch. Verify clock-domain logic on the AX250S-CQ208 prototype first.
Recommended
Deep-Space Probe FPGA Reuse and Upgrade Path
Deep-space programs value a family roadmap: designs captured for RTAX250S-CQ208V can migrate upward within RTAX-S to higher-density packages such as RTAX4000S or RTAX4000SL parts when payload requirements grow, preserving the proven anti-fuse design methodology, Libero toolchain, and qualification data packages. The RTAX250S capacity of 250K gates covers seed-money demos, engineering models, and lower-complexity probes, while the same RTL scales into 4000S-class devices for flagship missions. The OTP anti-fuse fabric is particularly valued for multi-year cruise phases where configuration memory upset recovery is unacceptable. Using the AC170 AX250S prototyping approach plus Aldec ACT-H600-CQ208 hardware, teams validate designs against CQFP-208 timing before committing flight parts.
Recommended
Recommended Products Summary
Engineering reference data for RTAX250S-CQ208V — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX250SL-CQ208V | RTAX250S-1CQ208V | RTAX250S-CQ208PROTO | RTAX250SL-1CQ208PROTO | AX250S-CQ208 |
|---|---|---|---|---|---|---|
| Package | CQFP-208 (ceramic, V screening) | CQFP-208 - same | CQFP-208 - same | CQFP-208 - same | CQFP-208 - same | CQFP-208 - same |
| Brand | Actel / Microsemi (Microchip Technology) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology (Actel Axcelerator) |
| System Gates | 250,000 | 250,000 | 250,000 | 250,000 | 250,000 | 250,000 |
| Logic Cells | 2,816 | 2,816 | 2,816 | 2,816 | 2,816 | 2,816 |
| Radiation Tolerance | Yes (RTAX-S rad-tolerant, V screening) | Yes | Yes | Yes (prototyping packaging) | Yes (prototyping packaging) | No (commercial Axcelerator) |
| Static Power | Standard S line | Lower (SL low-power family) | Standard S line | Standard S line | Lower (SL family) | [DATA_NEEDED] |
| Speed Grade | Standard | Standard | -1 (faster) | Standard | -1 (faster) | Standard (commercial) |
| Intended Use | Flight (space) | Flight (space, low power) | Flight (space, high speed) | Prototyping / EM builds | Prototyping / EM builds | Design validation only (AC170 flow) |
Key Differentiators
- Lowest static power in the same CQFP-208 footprint (vs RTAX250S-CQ208V (S line baseline))
- Higher timing margin with -1 speed grade (vs RTAX250S-CQ208V (standard speed))
- Radiation tolerance absent in the prototype device (vs AX250S-CQ208)
Design Notes
RTAX-S anti-fuse configuration is one-time-programmable: a logic error on a programmed flight device is unrecoverable. The industry-standard mitigation is Microchip application note AC170 (Prototyping RTAX-S Using Axcelerator Devices), which targets the same RTL at the commercial AX250S-CQ208 device and uses extender boards mapping the commercial package to the RTAX-S CQFP-208 footprint (Aldec ACT-H600-CQ208 supports RTAX250S-CQ208). Complete timing closure, simulation, and hardware validation on the reprogrammable AX device before burning the flight part.
The 1.5V core supply of RTAX250S-CQ208V delivers the family's low static power, but I/O banking voltage and I/O current must be budgeted separately per the RTAX-S/SL datasheet (rtaxs_ds2169_v18.pdf). If power is the binding constraint, the RTAX250SL-CQ208V drop-in in the same CQFP-208 footprint lowers static consumption further; evaluate SL early in design because RTL migration between S and SL is straightforward while board rework after layout is costly. Estimated: for space designs, derate supply rails per the power budget analysis in the datasheet rather than typical commercial margins.
The CQFP-208 ceramic package has peripheral leads and relatively high loop inductance compared with ball-grid alternatives; for the 649 MHz-class internal pipelines, keep high-fanout clock domains on dedicated clock resources and use registered outputs with series termination on fast I/O. Assign spare ground pins adjacent to switching I/O banks in the pin planner, since anti-fuse devices are programmed once and I/O assignments cannot be changed later. Cross-check final I/O timing with Libero back-annotation before flight-lot programming.
Compliance Information
Space-grade ceramic CQFP device; hermetic military/space qualification flows may include leaded finishes or exemptions. Compliance not stated in verified data - confirm via Microchip product page or flight documentation package.
