A54SX16-2TQG176I - 16K Gate FPGA TQFP-176 | Microchip
MPN： A54SX16-2TQG176I ✓ 啟用中A54SX16-2TQG176I 概覽
An FPGA (field-programmable gate array) is a semiconductor device that implements digital logic through programmable interconnects and configurable logic blocks rather than fixed silicon masks. The SX family sits within the broader FPGA hierarchy alongside CPLDs and structured ASICs, and the A54SX16 is the 16K-gate member of the family built on a 0.35 um CMOS process.
Key features include a sea-of-modules architecture that simplifies design timing closure, dual 3.3V and 5V supply operation for legacy bus compatibility, and the -2 speed grade delivering 320 MHz toggle performance. Antifuse programmability provides non-volatile, single-programmable configuration with no configuration PROM required at power-up.
Technically, the device provides 1452 CLBs of combinatorial and sequential logic capacity in CMOS technology. The 3.3V/5V dual-supply I/O structure allows direct interfacing with 5V TTL systems while core power operates at reduced voltage, reducing dynamic power consumption in performance-intensive designs.
Typical applications include industrial control and automation logic, glueless bridge and interface logic for legacy 5V backplane systems, defense and aerospace sub-systems requiring one-time-programmable reliability, and communications equipment needing fast 320 MHz-class logic integration.
A key design consideration: as an antifuse, one-time-programmable FPGA, the A54SX16 cannot be reprogrammed in-circuit - designers must reserve sufficient logic margin and validate the bitstream thoroughly before programming. Do not apply 5V to VCC pins unless the board is designed for dual-supply operation.
This page synthesizes distributor stock and pricing, drop-in family alternatives, and practical antifuse-FPGA design notes not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 A54SX16-2TQG176I — 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： A54SX16-2TQG176I （相同外形與佔位） — 差異在於 System Gates, Package, RoHS Status, Series, Operating Temperature.
A54SX16-1TQG176I
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查看資料表 →A54SX16P-TQG176
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查看資料表 →A54SX16-2TQG176I 最大額定值與電氣特性
| Series | SX Family (A54SX16) |
| System Gates | 16000 gates |
| Logic Cells | 924 cells |
| CLBs | 1452 |
| Maximum Toggle Frequency | 320 MHz |
| User I/O | 147 |
| Process Technology | 0.35 um CMOS |
| 供應電壓 | 3V to 3.6V, 4.75V to 5.25V (3.3V/5V) |
| Programmability | Antifuse, one-time programmable |
| Speed Grade | -2 |
| 封裝 | TQFP-176 (TQG176), 24x24 mm |
| Package Height | 1.4 mm |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (industrial) |
| RoHS 狀態 | Compliant, lead free |
| Architecture | Sea-of-modules |
| Manufacturer Brand Origin | Microsemi / Microchip Technology |
A54SX16-2TQG176I 1.4 mm 腳位配置指南
A54SX16-2TQG176I（1.4 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： A54SX16-2TQG176I.
請參閱 資料表 以查看完整腳位配置。
典型應用
A54SX16-2TQG176I 適用於 6 應用s: Industrial Control and Automation, Legacy 5V System Interface and Glue Logic, Defense and Aerospace Sub-Systems, Communications Equipment, Test and Measurement Instrumentation, Battery-Powered and Low-Power Embedded Systems.
Industrial Control and Automation
The A54SX16-2TQG176I fits industrial PLC and automation control boards where deterministic, instant-on logic is mandatory: its 16K gates and 1452 CLBs integrate sequencers, state machines, and counters that previously required multiple 74-series devices, while the antifuse configuration eliminates configuration-boot delay at power-up - a hard requirement for safety interlock logic. The industrial -40C to +85C rating covers factory-floor temperature swings, and 147 user I/Os at 3.3V/5V connect directly to legacy sensor and relay-driver electronics. Performance consideration: the 320 MHz toggle ceiling provides ample margin for sub-50 MHz control loops, but the one-time-programmable nature means logic updates require physically replacing the device, so keep spare sockets or plan firmware changes via an adjacent microcontroller.
推薦
Legacy 5V System Interface and Glue Logic
Because the A54SX16 supports dual 3.3V/5V supplies, it is a natural integration point for legacy 5V TTL backplanes, VME-style boards, and retrofit electronics where modern SRAM FPGAs cannot tolerate 5V signaling directly. The 147 user I/Os absorb address decoding, bus arbitration, and protocol adaptation functions, consolidating dozens of glue-logic ICs into one antifuse FPGA. The 320 MHz toggle performance comfortably exceeds the 8-33 MHz bus speeds of legacy systems. Design consideration: operate VCC at 5V only on boards designed for it; mixed-supply designs must respect the datasheet voltage ranges (3V-3.6V and 4.75V-5.25V) and provide adequate decoupling, as antifuse FPGA I/O structures do not tolerate out-of-range supplies.
推薦
Defense and Aerospace Sub-Systems
Antifuse FPGAs are favored in defense and aerospace electronics because their single-programmable, non-volatile configuration is immune to configuration-bit-flip from radiation and cannot be read back or altered in the field - a security and reliability advantage for one-time-programmed flight hardware. The A54SX16-2TQG176I provides 16K gates for telemetry framing, motor control sequencing, and interface bridging, with the industrial temperature range covering many avionics compartments. For higher-assurance programs, Microchip RTAX-SL radiation-hardened devices (e.g., RTAX1000SL, RTAX250SL) share the same antifuse design philosophy and can serve as architecture-matched migration targets. Trade-off: commercial SX parts require qualification data from the program office; plan programming-verification procedures early since there is no in-circuit rework.
推薦
Communications Equipment
In line cards, protocol converters, and telecom backplane adapters, the A54SX16-2TQG176I handles framing, multiplexing, and bus-bridging logic at 320 MHz-class internal toggle rates. The sea-of-modules architecture simplifies timing closure for fixed-frequency designs, an important advantage over SRAM FPGA routing delays when deterministic latency is required. The 147 I/Os support wide parallel data buses and multiple serial channels, while 3.3V/5V operation bridges older 5V line-card electronics with newer 3.3V silicon. Power consideration: the 0.35 um CMOS process consumes low static power, but dynamic power scales with frequency and switching activity, so constrain clock trees in the Designer software and budget thermal margins at the TQFP-176 1.4 mm height package.
推薦
Test and Measurement Instrumentation
Bench instruments, fixture controllers, and automated test equipment use the A54SX16-2TQG176I for stimulus generation, timing control, and data-path glue between converters and processors. The 320 MHz toggle capability supports fast pattern generation, while the antifuse configuration guarantees identical behavior across every production unit - valuable when measurement repeatability depends on deterministic digital timing. The 147 user I/Os drive matrix switches, multiplexer banks, and status displays, and the industrial temperature range suits unconditioned test benches. Design note: since the device is one-time programmable, prototype instrument logic on the faster-turnaround SX-A or flash-based devices, then port to the A54SX16 for production quantity pricing once the design is frozen.
推薦
Battery-Powered and Low-Power Embedded Systems
The SX family architecture was specifically promoted by Microsemi for dramatic reductions in power consumption compared to SRAM FPGAs: with no configuration RAM to refresh and a 0.35 um CMOS process, static current is minimal, making the A54SX16-2TQG176I suitable for portable instruments, battery-backed data loggers, and low-duty-cycle embedded controllers. Instant-on antifuse configuration removes boot latency and boot-power surges, extending effective battery life in duty-cycled systems. The 16K gate capacity covers moderately complex control logic without the over-provisioning cost of larger devices. Power design tip: dynamic power dominates, so gate clocks aggressively in the Designer tool and hold unused I/Os at defined logic levels to prevent floating-node switching losses on the 147 user I/Os.
推薦
推薦產品摘要
工程參考資料，適用於 A54SX16-2TQG176I — 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 | A54SX16-1TQG176I | A54SX16-2TQG176 | A54SX16-1TQG176 | A54SX16P-TQG176 | A54SX16P-2TQG176 |
|---|---|---|---|---|---|---|
| Package | TQFP-176 (TQG176) | TQFP-176 - same | TQFP-176 - same | TQFP-176 - same | TQFP-176 - same | TQFP-176 - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 16,000 gates | 16,000 gates | 16,000 gates | 16,000 gates | 16,000 gates | 16,000 gates |
| Speed Grade / Toggle Frequency | -2, up to 320 MHz | -1, lower than 320 MHz | -2, up to 320 MHz | -1, lower than 320 MHz | standard SX-A grade | -2 SX-A grade |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) |
| Supply Voltage | 3.3V / 5V dual | 3.3V / 5V dual | 3.3V / 5V dual | 3.3V / 5V dual | 3.3V / 5V dual | 3.3V / 5V dual |
| Programmability | Antifuse, one-time programmable | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP | Antifuse OTP |
主要差異化特點
- Fastest -2 speed grade in the 16K SX family (對比A54SX16-1TQG176I)
- Industrial temperature rating for harsh environments (對比A54SX16-2TQG176)
- Original SX family maturity vs SX-A migration (對比A54SX16P-TQG176)
設計說明
The A54SX16-2TQG176I operates from dual supply rails (3.3V and 5V, ranges 3V-3.6V and 4.75V-5.25V per the datasheet). Apply 5V only if your board's I/O ring is designed for it; a 3.3V-only design must never see 5V on VCC pins. Estimated: dynamic power dominates in antifuse CMOS FPGAs and scales linearly with clock frequency and switching activity, so a design toggling most of the 147 I/Os at tens of MHz typically stays well under 1 W - verify with Microchip Designer power estimation tools before finalizing the thermal budget.
Decouple each VCC pin pair with 0.1 uF ceramic capacitors placed within 2-3 mm of the TQFP-176 pins, plus one bulk 10 uF capacitor per rail. The 176-pin TQFP has a 0.5 mm lead pitch; use a recommended 24x24 mm land pattern with non-solder-mask-defined pads and inspect with 5x magnification for solder bridges. Because the package height is only 1.4 mm, keep traces under the package short to ease rework access. Follow Microchip SX family application notes for program-mode pin strapping on production boards.
The most common pitfall with antifuse FPGAs is treating them like SRAM devices: the A54SX16 cannot be reprogrammed, so never program a prototype bitstream onto production silicon. Freeze and simulate the design in Microchip Designer (Libero), verify timing at the -2 speed grade over the full -40C to +85C industrial range, and use the vendor programming service or approved programmers. Also note that the 'I' suffix matters - do not substitute commercial-temperature A54SX16-2TQG176 in industrial enclosures where ambient can exceed +70C.
With 147 user I/Os at 0.35 um CMOS drive strengths, output edge rates are fast enough to cause reflections on long unterminated lines above roughly 30-50 MHz toggle rates. Series-terminate (22-47 ohm) any trace longer than about one-fifth of the signal rise time in length, and group simultaneously switching outputs on separate ground returns. For 5V TTL interfacing, check the datasheet I/O clamp limits; where bus contention is possible, enable FPGA bus-hold or pull-up configurations instead of relying on external resistors alone.
合規資訊
Datasheet listings describe the package as ROHS COMPLIANT; PCB Electronics Supply Chain lists the part as LEAD FREE. REACH, halogen-free, and conflict-minerals status must be confirmed via official Microchip compliance documentation.
