RTAX4000SL-LG1272V - 4M-Gate Rad-Tolerant FPGA | Microchip
MPN： RTAX4000SL-LG1272V ✓ 啟用中RTAX4000SL-LG1272V 概覽
A radiation-tolerant FPGA is a programmable logic device engineered to survive the ionizing radiation environment of space, including total ionizing dose (TID), single-event latchup (SEL), and single-event upset (SEU) effects. Within the programmable logic hierarchy, the RTAX-S/SL family sits above commercial FPGAs in reliability class, serving as the mission-critical processing, telemetry, and control backbone of satellites and space probes. The RTAX-S/SL and RTAX-DSP family is based upon the commercial Microsemi Axcelerator architecture and reaches densities of up to four million equivalent system gates.
Key features of the RTAX4000SL include true single-chip form factor, live-at-power-up (LAPU) operation, and low power consumption - the SL (low-power) variant further reduces static power versus the standard RTAX4000S. System-level features include embedded SRAM with built-in FIFO control logic, segmentable clocks, chip-wide highway routing, and dedicated carry logic for arithmetic datapaths.
Architecturally, the device uses antifuse one-time-programmable interconnect, which is inherently immune to configuration SEUs - a decisive advantage over SRAM-based FPGAs in orbit, since no scrubbing of the configuration bitstream is required. Metal-to-metal antifuse elements also present low capacitance, supporting the high performance inherited from the Axcelerator family.
Typical applications include satellite payload processing, spacecraft command and data handling (C&DH), bus avionics, and instrument control in low-Earth-orbit and deep-space missions where radiation tolerance and single-chip integration are mandatory.
A key design consideration: because the device is one-time programmable, engineers must prototype on flash-based ProASIC3E devices using the Aldec/Microchip adaptor board methodology and the EDIF netlist and pinout converter documented in Microchip application notes before committing to antifuse programming.
This page synthesizes verified distributor data, family cross-reference options, and practical space-design notes not found in the manufacturer datasheet, giving engineers a single self-contained reference for the RTAX4000SL-LG1272V.
直接替換替代品，適用於 RTAX4000SL-LG1272V — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： RTAX4000SL-LG1272V （相同外形與佔位） — 差異在於 Family, Package, Configuration, Radiation Tolerance, Logic Cells.
RTAX4000SL-1LG1272V
✅ 直接替換聯絡詢價
查看資料表 →RTAX4000SL-1LG1272B
✅ 直接替換聯絡詢價
查看資料表 →RTAX4000S-LG1272V
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →RTAX4000S-1LG1272V
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →RTAX4000SL-LG1272V 最大額定值與電氣特性
| Logic Cells | 60480 |
| CLBs | 40320 |
| Equivalent System Gates | 4000000 |
| Family | RTAX-S/SL and RTAX-DSP |
| Programming Technology | Antifuse (one-time programmable) |
| Radiation Tolerance | Radiation-tolerant, space-flight grade |
| Power-Up Mode | Live at power-up (LAPU) |
| Form Factor | True single-chip |
| Embedded Memory | Embedded SRAM with built-in FIFO control logic |
| Clocking | Segmentable clocks |
| Routing | Chip-wide highway routing, carry logic |
| Base Architecture | Microsemi Axcelerator commercial family |
| 封裝 | 1272-pin ceramic LG (CGA) package |
| 安裝類型 | Surface Mount |
| Application Domain | Space-flight systems |
RTAX4000SL-LG1272V 1272-pin ceramic lg (cga) package 腳位配置指南
RTAX4000SL-LG1272V（1272-pin ceramic lg (cga) package 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： RTAX4000SL-LG1272V.
請參閱 資料表 以查看完整腳位配置。
典型應用
RTAX4000SL-LG1272V 適用於 6 應用s: Satellite Payload Processing, Spacecraft Command and Data Handling (C&DH), Onboard Instrument Control and DAQ, Satellite Bus Avionics, Deep-Space Probe Electronics, RTAX-S Design Prototyping and Emulation.
Satellite Payload Processing
The RTAX4000SL-LG1272V serves as the high-density processing fabric in satellite payloads, where its 60,480 logic cells and 4,000,000 equivalent gates implement DSP datapaths, packet framing, and compression engines. The RTAX-SL low-power variant reduces static dissipation, directly conserving limited spacecraft solar-array and battery power over multi-year missions. Because the antifuse configuration is immune to single-event upsets, the payload logic operates without bitstream scrubbing hardware, saving mass, board area, and a scrubber controller. Designs are prototyped on flash-based ProASIC3E adaptor boards before antifuse programming, and the device's live-at-power-up behavior simplifies payload power-on sequencing in orbit.
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Spacecraft Command and Data Handling (C&DH)
In spacecraft C&DH subsystems the RTAX4000SL-LG1272V implements telemetry formatting, command decoders, memory controllers, and bus interfaces. Embedded SRAM with built-in FIFO control logic buffers data between the onboard computer and downlink chains without external FIFO components, while chip-wide highway routing carries control signals across the 4,000,000-gate fabric with predictable timing. Live-at-power-up operation guarantees the C&DH logic is available the moment spacecraft power is applied after launch-vehicle separation - essential for autonomy during safing events. The single-chip form factor removes the configuration memory that would otherwise add failure modes in the radiation environment.
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Onboard Instrument Control and DAQ
Science instruments on LEO and deep-space platforms use the RTAX4000SL-LG1272V as the interface between detectors and the spacecraft data system. Dedicated carry logic accelerates the arithmetic in detector correlation and accumulation stages, and segmentable clocks allow different clock domains for high-rate acquisition front ends and low-rate housekeeping logic within one device. The SL grade's reduced static power matters because instrument electronics are often power-capped by thermal design limits in vacuum. Radiation-tolerant processing (V suffix flow) ensures the acquisition chain meets TID and latchup requirements without costly redundancy, and the hermetic ceramic LG1272 package suits thermal-vacuum qualification flows.
推薦
Satellite Bus Avionics
Bus avionics - power distribution control, attitude determination interfaces, and platform health monitoring - rely on the RTAX4000SL-LG1272V where moderate-to-high gate counts meet extreme reliability demands. The antifuse fabric cannot lose its configuration to single-event upsets, so bus control logic remains valid through solar particle events without watchdog reconfiguration. Low power consumption reduces the thermal load on spacecraft radiators, and the true single-chip form factor simplifies parts-count and reliability predictions for mission assurance reviews. Designers typically migrate proven Axcelerator RTL unchanged to the RTAX-S/SL family because the architecture derives directly from Microsemi's commercial Axcelerator line.
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Deep-Space Probe Electronics
Deep-space missions face harsher TID and single-event environments than LEO missions, and the RTAX4000SL-LG1272V addresses this with its radiation-tolerant antifuse platform. At 4,000,000 gates it integrates telecom baseband functions, fault-management state machines, and science data formatting that would otherwise require multiple rad-hard ASSPs with long procurement lead times. Live-at-power-up behavior supports the autonomous recovery sequences deep-space probes must execute without ground intervention. The one-time-programmable nature also prevents configuration corruption during the multi-year cruise phase, and low static power preserves the extremely tight power budgets of missions beyond Mars where solar flux is a fraction of Earth orbit.
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RTAX-S Design Prototyping and Emulation
Because the RTAX4000SL is one-time programmable, every space design passes through a reprogrammable prototyping phase. The documented Microchip methodology pairs a footprint-compatible adaptor board with an EDIF netlist and pinout converter, allowing the netlist targeted at the RTAX-S device to run on flash-based ProASIC3E silicon - such as the A3PE3000 family - so engineers iterate timing, pin assignments, and functional bugs before committing to antifuse programming. Aldec and Microchip jointly offer RTAX/RTSX prototyping adaptors for exactly this purpose. This workflow materially reduces mission risk: the final antifuse device is programmed only after the identical netlist has been validated on reprogrammable hardware.
推薦
推薦產品摘要
工程參考資料，適用於 RTAX4000SL-LG1272V — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | RTAX4000SL-1LG1272V | RTAX4000SL-1LG1272B | RTAX4000S-LG1272V | RTAX4000S-1LG1272V |
|---|---|---|---|---|---|
| Package | LG1272 ceramic CGA | LG1272 ceramic CGA - same | LG1272 ceramic CGA - same | LG1272 ceramic CGA - same | LG1272 ceramic CGA - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Logic Cells | 60480 | 60480 | 60480 | 60480 | 60480 |
| Equivalent Gates | 4000000 | 4000000 | 4000000 | 4000000 | 4000000 |
| CLBs | 40320 | 40320 | 40320 | 40320 | 40320 |
| Speed Grade | L (standard) | -1 (faster) | -1 (faster) | L (standard) | -1 (faster) |
| Power Variant | SL (low power) | SL (low power) | SL (low power) | S (standard power) | S (standard power) |
| Programming Technology | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
| Space Qualification Suffix | V (space flight grade) | V | B | V | V |
主要差異化特點
- Largest density in the RTAX-SL family (對比RTAX2000SL-1LG1152V)
- Lower static power than the standard S variant (對比RTAX4000S-LG1272V)
- SEU-immune configuration vs SRAM FPGAs (對比A3PE3000-1FGG896I)
設計說明
The RTAX4000SL-LG1272V is one-time programmable - a programming error strands the device. Never commit to antifuse programming until the identical EDIF netlist has been validated on a reprogrammable ProASIC3E prototyping adaptor per the Microchip application note Prototyping for RTAX-S and RTAX-SL Devices, using the EDIF netlist and pinout converter to preserve pinout fidelity. Also verify the V (space flight) processing flow is specified at ordering; standard commercial flow parts are not interchangeable in mission documentation.
Choose the SL (low power) variant deliberately: the RTAX4000SL draws lower static power than the RTAX4000S at identical 4,000,000-gate density, which matters when spacecraft thermal design caps dissipation. Budget static, dynamic, and I/O power separately in Microchip Libero power analysis before flight design freeze, because antifuse devices cannot be reconfigured later to trade speed for power. Confirm actual current figures against the manufacturer datasheet rather than relying on family-level typical values.
The LG1272 ceramic column grid array requires careful pad geometry: follow the Microchip land-pattern recommendation for CGA columns, and support the columns with compliant thermal design to tolerate CTE mismatch between ceramic package and PCB across thermal-vacuum cycles. Prototype on a footprint-compatible adaptor board so the flight PCB layout is fixed early - any later footprint change forces board rework on hardware already qualified for space.
合規資訊
Space-flight ceramic-packaged device; compliance declarations (RoHS/REACH) are not published in the provided data and typically follow per-order documentation from Microchip. Verify with the manufacturer certificate of conformance for your lot.
