A54SX16-1TQG176 - SX FPGA 24K Gates 147 I/O TQFP-176 | Microchip
MPN： A54SX16-1TQG176 ✓ 啟用中A54SX16-1TQG176 概覽
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing a fabric of configurable logic blocks and programmable interconnects that the designer wires together after manufacturing. Within the programmable-logic hierarchy, the device sits under FPGA -> programmable logic IC -> application-specific digital IC. The SX family uses antifuse programmability, meaning connections are permanently set at programming time - configuration is stored in the silicon itself, starts up instantly with no external boot memory, and is inherently resistant to configuration readback.
Key features of the A54SX16-1TQG176 include its sea-of-modules architecture for high logic utilization, the -1 speed grade suited to standard-performance timing requirements, and 5V-tolerant I/O operation enabled by the 5V supply option. The antifuse fabric delivers low interconnect delay and low static power consumption compared with SRAM-based alternatives of the same era, making it attractive for glue logic consolidation, bus bridging, and control-path integration.
Architecturally, the SX family is built on a 0.35 um-class process (per family data) with a module-based fabric that simplifies timing closure and design migration. Because the routing is deterministic and the device is one-time programmable, designers often use it in cost-sensitive systems where a modern SRAM FPGA would be over-specified and higher cost.
Typical applications include industrial control logic, communication interface bridging, legacy design continuation, and single-chip integration of multiple 74-series-style functions. The 147 I/O count supports wide parallel buses common in these systems.
Design consideration: the device is one-time programmable, so any logic change requires a new physical part - verify the bitstream thoroughly before committing to programming and assembly. Also observe the two-rail power sequencing guidance in the manufacturer datasheet.
This page synthesizes distributor availability, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 A54SX16-1TQG176 — 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： A54SX16-1TQG176 （相同外形與佔位） — 差異在於 System Gates, Package, Family, Operating Temperature, Logic Cells.
A54SX16-2TQG176
✅ 直接替換聯絡詢價
查看資料表 →A54SX16P-1TQG176
✅ 直接替換聯絡詢價
查看資料表 →A54SX16P-TQG176
✅ 直接替換聯絡詢價
查看資料表 →A54SX16-1TQG176 最大額定值與電氣特性
| Series | SX |
| Number of System Gates | 24000 |
| Number of I/O | 147 |
| Speed Grade | -1 |
| Supply Voltage (Core) | 3 V to 3.6 V |
| Supply Voltage (I/O) | 4.75 V to 5.25 V |
| 工作電源電壓 | 3.3 V, 5 V |
| 工作溫度 | 0C to +70C (TA) |
| 封裝 / 外殼 | 176-LQFP |
| Supplier Device Package | 176-TQFP (24x24 mm) |
| 安裝類型 | Surface Mount |
| Packaging | Tray |
| Programmability Type | Antifuse (one-time programmable) |
| RoHS 狀態 | ROHS3 Compliant |
| Lead Free | Yes |
| Product Status | Active |
| Manufacturer Lead Time | 10 weeks |
A54SX16-1TQG176 176-tqfp (24x24 mm) 腳位配置指南
A54SX16-1TQG176（176-tqfp (24x24 mm) 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： A54SX16-1TQG176.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX16-1TQG176 適用於 6 應用s: Industrial Control Logic Integration, Legacy Design Continuation, Communication Interface Bridging, Configuration-Secure Systems, Test and Measurement Equipment, Single-Chip Function Consolidation.
Industrial Control Logic Integration
The A54SX16-1TQG176 consolidates glue logic, address decoders, state machines, and bus controllers that would otherwise occupy dozens of 74-series devices. Its 24,000 gates and 147 user I/O provide ample capacity for wide parallel control buses, while the 5V-compatible I/O rail (4.75V to 5.25V) lets it drive legacy TTL-level PLC and motor-control signals directly without level shifters. Because the antifuse fabric is one-time programmable, the configured logic is immune to configuration upsets from industrial noise and powers up instantly with the system - no boot delay. The commercial 0C to +70C range suits enclosed factory-floor controllers; for extended-temperature environments verify the appropriate industrial suffix variant.
推薦
Legacy Design Continuation
For systems originally designed around SX-family or discrete TTL logic, the A54SX16-1TQG176 keeps existing PCB layouts valid: the TQFP-176 footprint and pinout remain unchanged across speed grades, so a -1 to -2 swap requires no board respin. The antifuse architecture reproduces the deterministic timing behavior legacy designs were characterized against, and the 3.3V core / 5V I/O dual-rail scheme matches the power tree of 1990s-era boards. Designers should hold verified programming bitstreams in controlled inventory since each physical part is programmed once. This makes the part a low-risk continuation path for medical, telecom, and test equipment still in production.
推薦
Communication Interface Bridging
With 147 user I/O and the -1 speed grade, the device implements protocol bridges between parallel backplane interfaces, synchronous serial ports, and processor buses. The sea-of-modules fabric yields predictable interconnect delay, simplifying timing closure for multi-source-synchronous interfaces that modern coarse-grained FPGAs handle less transparently. The 5V I/O rail accepts and drives 5V TTL signals common on legacy telecom line cards, eliminating translator ICs. Because configuration is stored in antifuse silicon, the bridge is active within microseconds of power application - critical in systems where the data path must be up before a host CPU finishes booting.
推薦
Configuration-Secure Systems
Antifuse FPGAs are inherently resistant to bitstream extraction: there is no external configuration flash to read and no readback path in the silicon, so design IP is physically protected. The A54SX16-1TQG176 suits applications where the logic function itself is proprietary - encryption key handling, licensing logic, or anti-counterfeiting checks at board level. Instant-on behavior removes the configuration window that SRAM FPGAs expose, and the 24K-gate capacity supports moderate security functions while the 3.3V core keeps power low. For defense-adjacent commercial work, note that Microchip's RTAX radiation-tolerant line shares this antifuse heritage.
推薦
Test and Measurement Equipment
Bench instruments, ATE fixtures, and interface adapters benefit from the device's instant-start deterministic fabric and wide 147-pin I/O field for driving stimulus and capture across many channels simultaneously. The TQFP-176 24x24 mm package reflows on standard SMT lines, and the 5V-tolerant I/O connects directly to older instrument backplanes and TTL-level pod interfaces without translator networks. Because the antifuse configuration cannot be disturbed by electrostatic events or brownouts during testing, fixture logic remains stable across long automated runs. Reserve faster -2 grade parts for fixtures needing sub-10 ns critical paths.
推薦
Single-Chip Function Consolidation
A core SX family use case is replacing multiple small PLDs, PALs, and SSI/MSI logic packages with one A54SX16-1TQG176, cutting BOM count, board area, and assembly cost. The 24,000-gate capacity absorbs dozens of combinational and sequential functions, and the 0.35 um-class antifuse process keeps static power low versus SRAM fabrics of similar capability. Inventory simplification is significant: one programmed SKU replaces many discrete line items. Because parts are one-time programmable, maintain a programming-house flow with revision-controlled bitstreams. The tray packaging suits both in-house programming and contract assembler feeders.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX16-1TQG176 — 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 | A54SX16-2TQG176 | A54SX16P-1TQG176 | A54SX16P-TQG176 |
|---|---|---|---|---|
| Package | TQFP-176 (24x24 mm) | TQFP-176 - same | 176-LQFP - same | TQFP-176 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 24000 | 24000 | 24000 (16K-gate class per family listing) | 24000 (16K-gate class per family listing) |
| User I/O | 147 | 147 | 147 | 147 |
| Speed Grade | -1 | -2 (faster) | -1 (P-variant) | standard (P-variant) |
主要差異化特點
- Lowest-cost speed grade in the SX16 TQFP-176 family (對比A54SX16-2TQG176)
- 5V-tolerant I/O on the standard SX die (對比A54SX16P-1TQG176)
- Configuration security via antifuse storage (對比SRAM-based FPGAs (cross-package, for reference only))
設計說明
The A54SX16-1TQG176 requires two supply rails: 3.3V nominal core (3V-3.6V) and 5V nominal I/O (4.75V-5.25V). Verify rail sequencing and ramp-rate requirements in the SX family datasheet before finalizing the power tree, and decouple each rail with local ceramic capacitors at the corner power/ground pin pairs. Because antifuse fabric draws very low static current, regulation accuracy - not thermal budget - is the dominant power-design concern on this device.
This is a one-time-programmable antifuse device: a logic bug found after programming cannot be patched, and a programmed device cannot be reused. Establish a revision-controlled bitstream repository, program a verification sample from each programming lot, and hold spare programmed devices in inventory given the 10-week manufacturer lead time. Never mix -1 and -2 speed grade parts in one assembly without re-running timing analysis, since worst-case timing differs between grades.
The 176-TQFP 24x24 mm land pattern follows the standard 0.5 mm-pitch QFP layout; use the CAD model referenced by Microchip USA for exact pad geometry. Keep unused I/O configured per the datasheet recommendation to avoid floating-node noise, route 5V-tolerant I/O banks away from sensitive analog traces, and provide solid ground return paths under high-switching I/O groups. TQFP leads are delicate - specify gentle-form handling at the contract assembler.
合規資訊
ROHS3 Compliant and lead free per Microchip USA and Kynix distributor listings. REACH, halogen-free, and conflict-minerals status not stated in provided data.
