RTAX250S-1LG624B - Rad-Tolerant FPGA 250K Gates | Microchip
MPN: RTAX250S-1LG624B ✓ Hoạt độngRTAX250S-1LG624B Tóm tắt
A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation environment of space: high total ionizing dose (TID), heavy-ion single-event effects (SEE), and proton exposure. Within the semiconductor hierarchy, the RTAX250S-1LG624B belongs to the RTAX-S family -> radiation-tolerant FPGA -> FPGA -> programmable logic IC, and is the space-flight counterpart of the commercial Axcelerator family from Microsemi.
Key features include single-chip, anti-fuse-based, live-at-power-up operation (no external configuration PROM needed, no configuration bitstream to upset), embedded SRAM blocks with built-in FIFO control logic, segmentable clock conditioning, and chip-wide highway routing. The -1 speed grade supports internal performance up to 649 MHz, and the CMOS 0.15um process with 1.5V core delivers low static power consumption, which is critical for solar- and battery-powered spacecraft.
Architecturally, the RTAX-S fabric combines patented antifuse interconnect with 3-input D-flip-flop-based logic modules, providing 100% routability and immunity to configuration memory upsets that plague SRAM-based FPGAs in orbit. The embedded FIFO control and chip-wide highway routing resources let designers implement high-throughput payload data paths with predictable timing.
Typical applications include satellite telemetry/command interfaces, payload data processing, orbital platform bus controllers, and launch-vehicle avionics, where the LG624 ceramic package provides hermetic, high-reliability mechanical and thermal integration.
Design tip: use the footprint-compatible Axcelerator prototyping flow (adaptor board plus EDIF netlist/pinout converter) to validate designs on commercial parts before committing to flight units.
This page synthesizes distributor inventory signals, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho RTAX250S-1LG624B — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với RTAX250S-1LG624B (cùng hình factor và footprint) — khác nhau ở Package, Configuration, Radiation Tolerance, Family, Equivalent System Gates.
RTAX250SL-LG624B
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →RTAX250SL-CG624B
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →RTAX250S-1LG624V
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →RTAX250S-LG624V
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →RTAX250S-1LG624PROTO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
RTAX250S-1LG624B Tỷ lệ tối đa & tính chất điện
| Family | RTAX-S Radiation-Tolerant FPGA |
| Equivalent System Gates | 250000 gates |
| Logic Cells (Modules) | 2816 cells |
| Registers / Logic Cells Total | 4224 logic cells |
| User I/O | 248 I/O |
| Core Supply Voltage | 1.5 V |
| Maximum System Frequency | 649 MHz |
| Process Technology | 0.15 um CMOS |
| Speed Grade | -1 |
| Hộp | 624-Pin LGA (LG624), ceramic |
| Nhiệt độ hoạt động | -55C to +125C |
| Configuration | Anti-fuse, live at power-up (single chip) |
| Embedded Memory | Embedded SRAM with built-in FIFO control logic |
| Radiation Tolerance | Radiation-tolerant (RTAX-S class, per Microchip RTAX-S datasheet) |
| Kiểu lắp đặt | Surface Mount |
| Program Numbering | B = Military program-level screening |
Hướng dẫn cấu hình chân RTAX250S-1LG624B 624-pin lga (lg624), ceramic
Cấu hình chân cho RTAX250S-1LG624B (624-pin lga (lg624), ceramic gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho RTAX250S-1LG624B.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
RTAX250S-1LG624B phù hợp cho 6 Áp dụngs: Satellite Telemetry and Command (TM/TC) Interface, Payload Data Processing and Formatting, Onboard Bus Controller and Platform Avionics, Launch Vehicle Electronics, Radiation-Hardened Glue Logic Replacement, Space Instrumentation and Sensor Front-End Control.
Satellite Telemetry and Command (TM/TC) Interface
The RTAX250S-1LG624B fits TM/TC controller roles because its anti-fuse configuration is live at power-up and immune to configuration-memory upsets, so the command chain is functional immediately after separation events without relying on an external PROM that could be corrupted in orbit. With 2816 logic cells and 248 user I/O, it implements CCSDS-style frame formatting, command decoders, and redundant UART/MIL-STD-1553-style interfaces simultaneously on one chip. The 1.5V core on a 0.15um process keeps static power low, easing power-budget constraints on eclipse-mode operation. Ceramic LG624 hermetic packaging rated -55C to +125C supports spacecraft thermal-vacuum environments.
Được đề xuất
Payload Data Processing and Formatting
For payload data path control, the RTAX250S-1LG624B provides embedded SRAM with built-in FIFO control logic, letting designers implement elastic buffers between high-rate payload sensors and downlink formatters without external FIFO chips. Segmentable clocks and chip-wide highway routing support parallel data streams with predictable timing at speed grade -1 (up to 649 MHz internal performance class). The single-chip anti-fuse architecture eliminates configuration time after power-up, which matters for imaging payloads with short acquisition windows. Its 624-pin ceramic LGA supplies sufficient I/O (248 user pins) for wide data buses while maintaining hermeticity in vacuum.
Được đề xuất
Onboard Bus Controller and Platform Avionics
Spacecraft platform avionics need logic that works the moment the bus comes alive. The RTAX250S-1LG624B is live at power-up and requires no configuration sequence, making it ideal for bus arbiters, housekeeping controllers, and watchdog logic that must survive brownout and single-event upsets of other components. Its 250K-gate fabric is large enough to integrate a soft control core plus redundant interface state machines, while 1.5V core operation minimizes quiescent power in cruise mode. Military program-level screening (B suffix) and -55C to +125C ceramic LG624 construction align with platform avionics qualification flows.
Được đề xuất
Launch Vehicle Electronics
Launch-environment electronics demand extreme vibration tolerance and deterministic behavior within seconds of ignition. The RTAX250S-1LG624B contributes a hermetic 624-pin ceramic LGA that withstands mechanical stress better than organic-substrate packages, and its anti-fuse interconnect is static - no reconfiguration, scrubbing, or boot latency that could delay readiness. The 649 MHz-class fabric speed and -1 grade handle flight-sequence state machines, safing logic, and instrumentation interfaces. Operation from -55C to +125C covers booster thermal transients. Because it is single-chip, board area and mass are saved versus FPGA-plus-PROM solutions, an advantage on mass-critical stages.
Được đề xuất
Radiation-Hardened Glue Logic Replacement
Many space boards replace dozens of rad-hard ASSP glue functions (decoders, buffers, registers) with one RTAX250S-1LG624B. With 2816 logic cells and 248 user I/O, the device integrates address decoding, bus formatting, and sequencing logic while cutting component count, solder joints, and board mass. Anti-fuse configuration means the glue logic is correct at power-up and cannot be corrupted by SEUs in configuration memory - a decisive advantage over SRAM FPGAs in this role. The 1.5V, 0.15um CMOS fabric draws low static current. The LG624 footprint leaves I/O headroom for board-to-board interfaces and future netlist growth.
Được đề xuất
Space Instrumentation and Sensor Front-End Control
Scientific instruments - star trackers, spectrometers, particle detectors - need deterministic timing and clean clock segmentation close to the sensor. The RTAX250S-1LG624B provides segmentable clock conditioning and chip-wide highway routing to distribute sampling clocks with skew control, while embedded SRAM FIFOs absorb burst sensor data. Its 649 MHz-class internal fabric speed supports time-to-digital counting and coincidence logic implemented directly in fabric. The hermetic ceramic LG624 package with -55C to +125C rating suits instrument thermal cycles, and low 1.5V-core power reduces self-heating that would add sensor noise on thermally constrained optical benches.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho RTAX250S-1LG624B — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | RTAX250SL-LG624B | RTAX250SL-CG624B | RTAX250S-1LG624V | RTAX250S-LG624V | RTAX250S-1LG624PROTO |
|---|---|---|---|---|---|---|
| Package | 624-Pin ceramic LGA (LG624) | 624-Pin ceramic LGA (LG624) - same | 624-Pin ceramic LGA (LG624) - same | 624-Pin ceramic LGA (LG624) - same | 624-Pin ceramic LGA (LG624) - same | 624-Pin ceramic LGA (LG624) - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Equivalent System Gates | 250000 gates | 250000 gates | 250000 gates | 250000 gates | 250000 gates | 250000 gates |
| Logic Cells | 2816 cells | 2816 cells | 2816 cells | 2816 cells | 2816 cells | 2816 cells |
| User I/O | 248 I/O | 248 I/O (enhanced I/O features) | 248 I/O (enhanced I/O features) | 248 I/O | 248 I/O | 248 I/O |
| Core Supply Voltage | 1.5 V | 1.5 V | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
| Screening Flow | B (military program-level) | B (military program-level) | C (program screening) | V | V | PROTO (engineering only, not flight) |
| Operating Temperature | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C |
Bảo phân biệt quan trọng
- Single-chip live-at-power-up anti-fuse architecture (vsRTAX250SL-LG624B)
- Military program-level B screening (vsRTAX250S-1LG624V)
- Flight-qualified silicon (vsRTAX250S-1LG624PROTO)
Ghi chú thiết kế
The LG624 ceramic LGA requires a carefully specified land pattern and flatness-controlled PCB because ceramic LGA warpage over temperature can stress solder joints. Follow the RTAX-S/SL datasheet (ds2169) land-pattern recommendations for the LG624 footprint, and support inspection via X-ray under the full-array footprint since perimeter optical inspection cannot verify inner-row joints. Plan test access: with 248 user I/O on 624 pads, reserve boundary-scan (JTAG) chains as the primary electrical test strategy, since bed-of-nails probing under an LGA is impractical.
Power the 1.5V core, 2.5V and 3.3V I/O banks with sequenced, low-noise rails and decouple each supply with bulk plus high-frequency ceramic capacitance at the package corners, per the RTAX-S/SL datasheet power guidelines. Although RTAX-S is live at power-up, supply ramp monotonicity still matters for I/O precharge behavior. Estimated: because the antifuse fabric has low static power, most consumption in a 250K-gate design is dynamic and I/O-driven - budget based on your actual toggle rates rather than worst-case gate count.
Use the official footprint-compatible prototyping methodology: prototype on commercial Axcelerator (AX250) silicon via an adaptor board and convert the EDIF netlist and pinout for the RTAX250S target, per the application note 'Prototyping for RTAX-S and RTAX-SL Devices'. Do not assume the PROTO-suffix part (RTAX250S-1LG624PROTO) is flight-eligible - it is an engineering flow device. When substituting SL parts for S parts, re-verify I/O DC/AC parameters and screening documentation against your program's DLA/drawing requirements before release.
Thông tin tuân thủ
Space-grade hermetic ceramic LGA part; RoHS/REACH status not stated in provided data - hermetic aerospace parts are typically covered by aerospace/defense exemptions. Request Microchip compliance certificate with order.
