A54SX32-TQ176I - 32K Gate SX FPGA, 147 I/O, TQFP-176 | Microchip
MPN: A54SX32-TQ176I ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
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| 500 | $0 | $0.00 |
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Drop-in alternatives for A54SX32-TQ176I — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX32-TQG176I
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View Datasheet →A54SX32-TQ176I Maximum Ratings & Electrical Characteristics
| System Gates | 32000 |
| Logic Cells / Modules | 1800 |
| Maximum System Frequency | 240 MHz |
| Process Technology | 0.35 um CMOS |
| Supply Voltage - Core | 3 V to 3.6 V |
| Supply Voltage - I/O | 4.75 V to 5.25 V |
| User I/O | 147 |
| Program Technology | Antifuse (one-time programmable) |
| Package / Case | 176-LQFP / 176-TQFP (24x24 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, I suffix) |
| Family | Actel SX (54SX) |
| Configuration Retention | Non-volatile (antifuse), no boot PROM required |
| Standby Power | Zero (antifuse, no configuration storage power) |
| Architecture | Sea-of-modules (C-cell + R-cell) |
A54SX32-TQ176I 176-lqfp / 176-tqfp (24x24 mm) Pin Configuration Guide
Complete pinout information for A54SX32-TQ176I (176-lqfp / 176-tqfp (24x24 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for A54SX32-TQ176I.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
A54SX32-TQ176I is suitable for 6 applications: Industrial Control and Automation, 5V/3.3V Bridge Logic Consolidation, Avionics and Defense Subsystems, Telecommunications Line Cards, Medical Diagnostic Equipment, Security and Surveillance Systems.
Industrial Control and Automation
The A54SX32-TQ176I fits industrial controllers because its 5V-tolerant I/O ring (4.75V-5.25V) directly interfaces with legacy PLC sensor and actuator logic while the 3.0V-3.6V core keeps internal power low. Its 147 user I/O in a 24x24 mm TQFP consolidates glue logic, encoders, and sequencing state machines that would otherwise need multiple CPLDs. The antifuse fabric applies the configured design within microseconds of power-up, eliminating configuration latency and boot PROM reliability concerns on machinery that cycles power frequently. With 240 MHz system performance and industrial -40C to +85C rating, it handles deterministic timing-critical interlocks; the main trade-off is one-time programmability, so validated designs must be frozen before production programming.
Recommended
5V/3.3V Bridge Logic Consolidation
Mixed-voltage legacy systems often need a single chip to translate and interconnect 5V TTL signals with 3.3V CMOS logic. The A54SX32-TQ176I is purpose-built for this: its I/O banks operate from a separate 5V (4.75V-5.25V) rail while the core runs at 3.3V, removing external level shifters. Designers typically implement bus arbitration, address decoding, and handshaking across the two domains in the 1800-module fabric, replacing dozens of 74-series devices. Because the antifuse configuration is non-volatile, the bridge is active the instant power is applied - important in backplanes without controlled power sequencing. The 240 MHz capability comfortably covers bus timing, and the industrial temperature option suits uncontrolled factory environments.
Recommended
Avionics and Defense Subsystems
Antifuse FPGAs have long been favored in defense and avionics hardware because the programmed interconnect cannot be read back, offering inherent IP protection, and because the technology shows superior tolerance to configuration upsets compared with SRAM cells. The A54SX32-TQ176I provides 32,000 system gates for protocol engines, UART/SPI consolidation, and watchdog logic, with 147 I/O sufficient for MIL-STD-style discrete and serial interfaces. Zero-standby configuration power simplifies power budgets in conduction-cooled assemblies. The industrial -40C to +85C grade covers many ground-based and sheltered airborne environments; for radiation-critical orbits, designers move up to the RTAX radiation-t hardened families instead.
Recommended
Telecommunications Line Cards
Telecom line cards need deterministic glue logic between framer/PHY devices and backplane interfaces. The A54SX32-TQ176I implements framing assist, alarm detection, and HDLC-lite functions across its 1800 modules, with the 240 MHz fabric margin covering T1/E1 and similar rates. Its instant-on antifuse behavior means line cards pass traffic immediately after hot-swap power-up rather than waiting tens of milliseconds for SRAM configuration - reducing network downtime during card swaps. The 5V I/O option interfaces with legacy backplane signalling while the 3.3V core connects to modern framer silicon. Industrial temperature rating suits outdoor plant equipment, and the TQFP package reflows onto standard line-card assembly processes.
Recommended
Medical Diagnostic Equipment
Benchtop diagnostic instruments benefit from the A54SX32-TQ176I's deterministic, configuration-free startup: the acquisition logic is live the moment power is applied, which shortens calibration routines and eliminates boot-PROM failure modes in regulated equipment. Its 32K gates implement ADC control sequencing, trigger engines, and USB/UART bridge functions, while the 147 I/O handle front-end multiplexing. The 5V-tolerant I/O ring connects legacy analog front-end boards, and the 3.3V core talks to modern processors. Because the bitstream is fixed in antifuse elements, design provenance for regulatory documentation is unambiguous. Use the industrial temperature variant where the instrument enclosure runs warm from continuous operation.
Recommended
Security and Surveillance Systems
Surveillance controllers use the A54SX32-TQ176I to consolidate camera interface timing, alarm I/O, and communications bridging in one 176-pin device. The antifuse fabric's immunity to configuration corruption makes it attractive for always-on security hardware that must not lose state after power dips, and zero configuration power trims standby draw in battery-backed panels. With 147 user I/O, one FPGA handles relay drives, sensor loops, and multiple UART channels to IP encoders; the 240 MHz fabric covers video sync generation for standard camera formats. The 5V I/O rail interfaces legacy alarm loops directly, and the industrial temperature rating suits unheated outdoor cabinets.
Recommended
Recommended Products Summary
Engineering reference data for A54SX32-TQ176I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX32-TQG176I | A54SX32-1TQG176I | A54SX32-2TQG176I | A54SX32-1TQG176 | A54SX32-TQG176 |
|---|---|---|---|---|---|---|
| Package | 176-TQFP (24x24 mm) | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 32000 | 32000 | 32000 | 32000 | 32000 | 32000 |
| User I/O | 147 | 147 | 147 | 147 | 147 | 147 |
| Max System Frequency | 240 MHz (std speed grade) | 240 MHz (std) | higher (-1 grade) | highest (-2 grade) | higher (-1 grade) | 240 MHz (std) |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C | 0C to +70C (commercial) | 0C to +70C (commercial) |
| Supply Voltage | 3.0-3.6V core, 4.75-5.25V I/O | same dual-rail | same dual-rail | same dual-rail | same dual-rail | same dual-rail |
| Package Finish / RoHS | standard (TQ176) | green / RoHS lead-free | green / RoHS lead-free | green / RoHS lead-free | green / RoHS lead-free | green / RoHS lead-free |
| Price | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Industrial temperature with 5V-tolerant I/O in same footprint (vs A54SX32-TQ176)
- RoHS-compliant green alternative available pin-for-pin (vs A54SX32-TQG176I)
- Instant-on antifuse configuration (vs SRAM FPGAs (any brand))
Design Notes
The A54SX32-TQ176I requires two supply rails: 3.0V-3.6V for core logic and 4.75V-5.25V for the I/O ring. There is no documented power-up sequencing requirement for antifuse SX devices (unlike SRAM FPGAs), but decouple both rails locally with at least 0.1 uF per power pin plus bulk 10 uF capacitance. Estimated: at 240 MHz with heavy routing utilization, core current is on the order of tens of mA - consult the SX datasheet power calculator for your utilization figures rather than relying on worst-case numbers.
This is a one-time-programmable antifuse device. Once programmed, a bitstream error permanently consumes the physical part - there is no erase or rework path. Always complete full timing simulation and, where possible, validate logic on a reprogrammable prototyping platform (e.g., an SRAM FPGA or the SX silicon debugger flow) before committing to A54SX32-TQ176I production units. Order a small engineering lot for first-article programming and functional test before releasing the full production build.
The 176-TQFP (24x24 mm) has 0.5 mm pitch leads. Use a solder-mask-defined land pattern per the Microchip/Microsemi package drawing, with tie-bar thermal relief on the center under-package area if used. Keep 5V I/O traces separated from sensitive 3.3V core-domain signals where possible, and provide ESD protection on field-exposed I/O lines since the TQFP leads are directly operator-accessible in many panel applications.
Estimated: with typical SX32 core current in the tens of mA at 3.3V plus light 5V I/O loading, total dissipation is typically well under 0.5 W, which a standard 4-layer PCB with normal copper pours manages without a heatsink. Verify theta-JA for the 176-TQFP in the package drawing and re-check if you drive many outputs at high 5V load currents simultaneously.
Compliance Information
The TQ176I (this part) uses the standard package finish; the TQG176I variants use the green RoHS-compliant package per FindIC comparison data. Verify current RoHS/REACH certificates with Microchip before new designs.
