A54SX16-2VQ100 - 24K Gate SX FPGA, 81 I/O, TQFP-100 | Microsemi
MPN： A54SX16-2VQ100 ✗ 停產A54SX16-2VQ100 概覽
A field-programmable gate array (FPGA) is a semiconductor device containing configurable logic blocks and programmable interconnects that the designer wires together after manufacturing. Within the programmable logic hierarchy, the A54SX16 sits in the high-density antifuse FPGA class: FPGA -> programmable logic device -> application-specific integrated circuit (ASIC) alternative. Antifuse technology programs connections permanently at power-up programming, providing nonvolatile, radiation-tolerant configuration without an external boot PROM.
Key features include a sea-of-modules architecture that shortens design cycles, 16K system gates (924 logic cells), dual-voltage operation that separates the 5V-tolerant I/O ring from the 3.3V core, and a -2 speed grade supporting system toggle rates up to 320 MHz. The antifuse fabric consumes very low static power compared with SRAM FPGAs and is immune to configuration bitstream readback, giving inherent design security.
Technically, the SX family uses a 0.35 um CMOS process with Actel's proprietary Act1/Act2-style logic modules and antifuse interconnect. The VQ100 package provides 81 available I/O on a 0.5 mm lead pitch, and the dual-rail scheme allows direct interface to legacy 5V TTL systems while running the core at 3.3V for power savings.
Typical applications include glue logic integration and ASIC prototyping, industrial control and automation interfaces, telecommunications line-card support logic, and legacy avionics and defense system sustainment where the permanent antifuse configuration is preferred.
A key design consideration: this part is obsolete and RoHS non-compliant (tin-lead leads), so new designs should target the RoHS-compliant SX-A (A54SX16A) family, while existing designs should secure lifetime-buy stock.
This page synthesizes distributor stock data, drop-in package-compatible alternatives, and practical design notes not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 A54SX16-2VQ100 — 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： A54SX16-2VQ100 （相同外形與佔位） — 差異在於 System Gates, Family, Package / Case, Operating Temperature, Speed Grade.
A54SX16P-2VQ100
✅ 直接替換📋 參考替代品（不在目錄中）
A54SX16-2VQG100
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-2VQG100I
✅ 直接替換聯絡詢價
查看資料表 →A54SX16P-2VQG100I
✅ 直接替換聯絡詢價
查看資料表 →A54SX16P-2VQG100
✅ 直接替換聯絡詢價
查看資料表 →A54SX16P-1VQG100
✅ 直接替換聯絡詢價
查看資料表 →A54SX16P-VQG100M
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-2VQ100 最大額定值與電氣特性
| Manufacturer | Microsemi (Microchip Technology) |
| Family | SX (54SX) Antifuse FPGA |
| System Gates | 24000 (16K system gates, 924 cells) |
| User I/O | 81 |
| Speed Grade | -2 (up to 320 MHz toggle) |
| Supply Voltage (Core) | 3 V to 3.6 V |
| Supply Voltage (I/O) | 4.75 V to 5.25 V |
| 工作溫度 | 0C to +70C (TA) |
| 封裝 / 外殼 | 100-TQFP (VQFP-100, 14x14 mm) |
| Supplier Device Package | 100-VQFP (14x14) |
| 安裝類型 | Surface Mount |
| Process Technology | 0.35 um CMOS antifuse |
| Programming Technology | Antifuse (one-time programmable, nonvolatile) |
| Packaging | Tray |
| RoHS 狀態 | Non-compliant |
| Product Status | Obsolete |
| Series | SX |
A54SX16-2VQ100 100-vqfp (14x14) 腳位配置指南
A54SX16-2VQ100（100-vqfp (14x14) 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： A54SX16-2VQ100.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX16-2VQ100 適用於 6 應用s: Glue Logic Integration and ASIC Prototyping, Industrial Control and Automation, Telecommunications Line Cards, Legacy Avionics and Defense Sustainment, Test and Measurement Instrumentation, RoHS Remediation of Existing SX-Based Boards.
Glue Logic Integration and ASIC Prototyping
The A54SX16-2VQ100 consolidates address decoders, bus transceivers, state machines, and interface adapters that would otherwise occupy dozens of 74-series devices. Its 24,000 antifuse gates and 81 user I/O provide enough capacity to absorb surrounding SSI/MSI glue logic in a single 14x14 mm TQFP, cutting board area and assembly cost. The 5V-tolerant I/O ring interfaces directly with legacy TTL buses, while the 3.3V core keeps static power low. Because the antifuse fabric is programmed once and never loses configuration, a prototype compiled in the same flow as production silicon behaves identically at power-up, making the SX family a low-risk ASIC prototyping vehicle.
推薦
Industrial Control and Automation
In PLC I/O cards, motor-control interface panels, and sensor aggregation boards, the A54SX16-2VQ100 provides deterministic, instantly-available logic with no configuration boot delay - critical for systems that must be active within microseconds of power application. The 81 user I/O handle parallel encoder inputs, limit switches, and relay drive interfaces at 5V logic levels, while the -2 speed grade's 320 MHz toggle capability far exceeds industrial timing needs, giving generous timing margin over the 0C to +70C range. The permanent antifuse configuration also eliminates configuration-corruption field failures caused by radiation or power glitching, a common reliability concern with SRAM FPGAs on electrically noisy factory floors.
推薦
Telecommunications Line Cards
Telecom line-card support logic - framing interface glue, backplane handshaking, and LED/alarm control - benefits from the A54SX16-2VQ100's combination of fast deterministic interconnect and 5V-tolerant I/O that talks directly to legacy backplane signalling. The sea-of-modules architecture delivers predictable pin-to-pin delays, simplifying timing closure across the 81 user I/O. Low static power from the antifuse fabric reduces card-level thermal budget pressure in high-density shelves. For sustainment of NEBS-era equipment still specifying the original SX family, the 100-TQFP VQ100 package fits the existing footprint, and recompiled green variants (VQG100) drop onto the same land pattern when RoHS rework is required.
推薦
Legacy Avionics and Defense Sustainment
Although the commercial A54SX16-2VQ100 is rated 0C to +70C, the SX antifuse architecture persists in defense and avionics sustainment programs because its configuration cannot be upset by radiation-induced bit flips - there are no configuration bits to corrupt. Design security is inherent: the programmed netlist cannot be read back, protecting proprietary algorithms in deployed hardware. For extended-temperature programs, the A54SX16-2VQG100I provides -40C to +85C operation in the identical 100-TQFP footprint, requiring only recompilation. Lifetime-buy strategies typically pair the commercial part with its industrial I-grade sibling to cover all deployed environmental envelopes from one design database.
推薦
Test and Measurement Instrumentation
Bench instruments, interface adapters, and production test fixtures use the A54SX16-2VQ100 as a fast, reprogrammable-at-design-time (one-time programmable per unit) controller of timing generators, comparators, and pattern muxes. The -2 speed grade supports toggle rates up to 320 MHz, adequate for high-speed clock division and edge-aligned pattern generation, while deterministic antifuse interconnect guarantees repeatable skew performance unit-to-unit - important for calibrated measurements. Dual 3.3V/5V rails let the FPGA bridge between a 5V TTL test fixture world and a 3.3V digital control section without level shifters across its 81 I/O.
推薦
RoHS Remediation of Existing SX-Based Boards
Boards designed around the original tin-lead A54SX16-2VQ100 face component obsolescence under RoHS directives. Because the Pb-free (A54SX16P-2VQ100) and green (A54SX16-2VQG100) variants share the exact same die, pinout, and 100-TQFP footprint, remediation requires no PCB respin: swap the MPN, recompile the same design source, program the new antifuse device, and the board is RoHS-compliant. The only verification needed is solder-profile compatibility with the lead-free finish and a timing recheck if stepping from -2 to -1 speed grade. This makes the SX family one of the cleanest FPGA migration cases available for legacy-product compliance programs.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX16-2VQ100 — 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 | A54SX16P-2VQ100 | A54SX16-2VQG100 | A54SX16-2VQG100I | A54SX16P-1VQG100 |
|---|---|---|---|---|---|
| Package | 100-TQFP (VQ100, 14x14 mm) | 100-TQFP - same | 100-TQFP - same | 100-TQFP - same | 100-TQFP - same |
| Brand | Microsemi (Microchip Technology) | Microchip Technology | Microsemi | Microsemi | Microchip Technology |
| System Gates | 24000 | 24000 | 24000 | 24000 | 24000 |
| User I/O | 81 | 81 | 81 | 81 | 81 |
| Speed Grade | -2 (up to 320 MHz) | -2 | -2 | -2 | -1 (slower) |
| Supply Voltage | 3V-3.6V core, 4.75V-5.25V I/O | 3V-3.6V, 4.75V-5.25V | 3V-3.6V, 4.75V-5.25V | 3V-3.6V, 4.75V-5.25V | 3V-3.6V, 4.75V-5.25V |
| RoHS / Lead Finish | Non-compliant (tin-lead) | Pb-free | Green / RoHS | Green / RoHS | Pb-free green |
主要差異化特點
- Instant-on nonvolatile configuration (對比A54SX16P-2VQ100 (and any SRAM FPGA))
- 5V-tolerant dual-rail I/O (對比A54SX16P-1VQG100)
- Inherent design security (對比A54SX16-2VQG100)
- Trade-off: commercial temperature only (對比A54SX16-2VQG100I)
設計說明
Provide separate decoupling for the two supply rails: 0.1 uF ceramic per 3-4 VCC/VD pins plus at least 10 uF bulk on both the 3.3V core rail and the 5V I/O rail. Because this is an antifuse device, static current is very low, but dynamic I/O switching current on the 5V ring with 81 outputs can be significant - estimate ring current from your I/O macro count and load capacitance before sizing the 5V regulator. Estimated: 40 simultaneously switching outputs at 20 pF load, 10 MHz average toggle, draws roughly 40 x 20pF x 5V x 10MHz = 40 mA of dynamic current on VCI.
Antifuse devices are one-time programmable: a design error discovered after programming scraps the device. Always complete full simulation and static timing analysis at the -2 speed grade in Microsemi Designer before programming. Never substitute a -1 speed grade part without re-running timing closure, as -1 delays are slower and a -2-closed design can fail at -1. Also note the 0C to +70C commercial range - deploying this exact MPN in an unheated outdoor enclosure violates the datasheet limits; select the VQG100I industrial variant instead.
The 100-TQFP uses a 0.5 mm lead pitch; specify a solder-mask-defined land pattern per the Microchip/Microsemi package drawing and allow 1-2 extra mils of stencil reduction to prevent bridging. Use the exposed pin-1 dot for orientation and keep high-speed clock traces short with series termination near the driver. If migrating to the Pb-free A54SX16P-2VQ100 for RoHS, the land pattern is unchanged - only the assembly solder profile (SAC305, peak ~245-250C) needs updating.
The 5V I/O ring can source substantial edge rates; for long backplane or cable runs, enable the slew-limited output option in the I/O macro attributes, or add 22-33 ohm series resistors on outputs driving unterminated lines. Ground bounce across 81 outputs is best controlled by assigning switching banks evenly across the four sides of the TQFP and preserving the datasheet's dedicated ground pin frame - do not reassign power/ground pins in the constraint file.
合規資訊
RoHS non-compliant per Microchip USA product data (tin-lead lead finish). Pb-free green variants (VQG100 / PQG suffixes) exist in the same family for compliant builds.
