A54SX16-1PQG208 - 24K Gate SX FPGA, 175 I/O | Microsemi
MPN: A54SX16-1PQG208 ✓ Active| Qty | Unit Price | Extended |
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Drop-in alternatives for A54SX16-1PQG208 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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A54SX16P-1PQG208
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View Datasheet →A54SX16-2PQG208I
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View Datasheet →A54SX16P-PQG208
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View Datasheet →A54SX16P-PQG208I
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View Datasheet →A54SX16-1PQ208I
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View Datasheet →A54SX16P-2PQG208
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View Datasheet →A54SX16-1PQG208 Maximum Ratings & Electrical Characteristics
| Series | SX (A54SX16) |
| System Gates | 24000 |
| Logic Cells | 924 |
| Logic Array Blocks (LABs) / CLBs | 1452 |
| User I/O | 175 |
| Max Toggle Frequency | 280 MHz |
| Process Technology | 0.35 um |
| Supply Voltage (Core/I/O Domain 1) | 3 V to 3.6 V |
| Supply Voltage (Domain 2) | 4.75 V to 5.25 V |
| Speed Grade | -1 |
| Programmability Type | Antifuse (one-time programmable) |
| Package / Case | 208-BFQFP (28x28 mm) |
| Supplier Device Package | 208-PQFP (28x28) |
| Mounting Type | Surface Mount |
| Category | FPGA (Field Programmable Gate Array) IC |
A54SX16-1PQG208 208-pqfp (28x28) Pin Configuration Guide
Complete pinout information for A54SX16-1PQG208 (208-pqfp (28x28) 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 A54SX16-1PQG208.
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
A54SX16-1PQG208 is suitable for 6 applications: Industrial Control Glue Logic, Legacy 5V/3.3V Bus Bridging, Telecommunications Line-Card Control, Defense and Aerospace Board Upgrades, Test and Measurement Instrumentation, Embedded System Prototyping and NRE Reduction.
Industrial Control Glue Logic
In factory automation and process-control backplanes, the A54SX16-1PQG208 consolidates address decoding, interrupt control, and bus-interface glue logic that would otherwise occupy dozens of 74-series devices. Its 24,000 system gates and 924 logic cells absorb address decoders, wait-state generators, and handshaking state machines, while 175 configurable I/O directly interface 3.3V and 5V subsystems thanks to the dual 3.0-3.6V and 4.75-5.25V supply domains. Because the antifuse fabric is one-time programmable, the logic is instantly active at power-up - critical for equipment with hard real-time safety interlocks - and its configuration cannot be corrupted by power glitches or read out by competitors. Deterministic routing keeps pin-to-pin delays predictable across production lots, simplifying qualification of long-life industrial equipment.
Recommended
Legacy 5V/3.3V Bus Bridging
Retrofit and sustaining engineering on VME, ISA-derived, or proprietary parallel buses frequently requires bridging 5V logic with modern 3.3V controllers. The A54SX16-1PQG208 accepts dual supplies of 4.75-5.25V and 3.0-3.6V, allowing its I/O structure to coexist with TTL-level bus signals and 3.3V microprocessors on one die. With 175 I/O pins, a single device terminates address, data, and control lines while implementing byte-lane steering, endian conversion, or DMA arbitration in its 24,000-gate fabric. The 208-BFQFP 28x28 mm package provides enough pins to connect both bus domains without external level shifting in many designs, and the one-time-programmable antifuse fabric starts working within nanoseconds of power application - essential where the bridge must pass early-boot traffic.
Recommended
Telecommunications Line-Card Control
Telecom line cards and network interface boards use the A54SX16-1PQG208 for framing control, alarm scanning, LED/relay drivers, and microprocessor supervision. The SX family's sea-of-modules architecture, highlighted by Microchip as reducing design time and power, suits high-card-count shelves where per-card power budget is tight. The -1 speed grade sustains the state-machine and counter functions typical of T1/E1 supervision at well under its 280 MHz toggle ceiling, leaving timing margin for production variation. One-time-programmable antifuse configuration eliminates configuration-boot delays and provides no readable bitstream - a benefit for carrier equipment security requirements. The 208-BFQFP's gull-wing leads withstand the thermal cycling of central-office environments, and dual-rail operation integrates with both legacy 5V and 3.3V backplane signaling.
Recommended
Defense and Aerospace Board Upgrades
When refreshing legacy military boards built around the SX family, the A54SX16-1PQG208 lets engineers reproduce original programmable logic without PCB rework, since the same 208-BFQFP footprint and pinout has been in continuous supply. The antifuse fabric is inherently immune to configuration upsets that plague SRAM FPGAs and stores no readable bitstream, supporting program-security needs; Microchip also offers the related SX-A and radiation-tolerant RTAX families for harsher environments. The 24,000-gate capacity accommodates decoded control, pulse-stretching, and interface functions common in avionics and ground systems, while dual 3.3V/5V supply rails match mixed-technology military boards. Deterministic timing across temperature simplifies the timing analysis packages demanded by military qualification.
Recommended
Test and Measurement Instrumentation
Bench and rack instruments use the A54SX16-1PQG208 as a timing, trigger, and interface controller between front-end analog circuitry and a processor. Its 924 logic cells implement trigger state machines, prescalers, and acquire-hold sequencing, while 175 I/O connect to ADC handshake lines, relay banks, and front-panel logic across both 3.3V and 5V domains. Deterministic antifuse routing means trigger propagation delay is fixed by design rather than varying with configuration placement - important when channel-to-channel skew is specified on the datasheet of the instrument. Instant-on configuration at power-up lets the instrument pass its own power-on self-test without waiting for a configuration image to load, shortening measured boot time, and the 208-BFQFP mounts on standard surface-mount assembly lines used by instrument OEMs.
Recommended
Embedded System Prototyping and NRE Reduction
Design teams use the A54SX16-1PQG208 to integrate scattered MSI/LSI logic into one device, cutting bill-of-materials count and board area. Microchip's SX product page emphasizes that the sea-of-modules architecture reduces design cost and time-to-market: logic capture in Libero/Designer with timing-driven place-and-route yields a production device without mask charges. The 24,000-gate budget suits protocol converters, sequencers, and peripheral controllers; 175 I/O replaces multiple buffer chips across 3.3V and 5V rails. Once verified, the design is frozen into antifuse programming, giving every production unit identical timing - unlike SRAM FPGAs where routing can shift between software versions. For long-lifecycle embedded products, the mature 0.35 um process and stable Microsemi/Microchip sourcing support decade-scale deployments.
Recommended
Recommended Products Summary
Engineering reference data for A54SX16-1PQG208 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A54SX16P-1PQG208 | A54SX16-2PQG208I | A54SX16P-PQG208 | A54SX16-1PQ208I |
|---|---|---|---|---|---|
| Brand | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) | Microsemi (Microchip Technology) |
| Package | 208-BFQFP (28x28 mm) | 208-BFQFP - same | 208-BFQFP - same | 208-BFQFP - same | 208-PQFP - same footprint |
| System Gates | 24000 | 24000 | 24000 | 24000 | 24000 |
| User I/O | 175 | 175 | 175 | 175 | 175 |
| Speed Grade | -1 | -1 | -2 (faster) | Standard | -1 |
| Supply Voltage | 3.0-3.6 V and 4.75-5.25 V | 3.0-3.6 V and 4.75-5.25 V | 3.0-3.6 V and 4.75-5.25 V | 3.0-3.6 V and 4.75-5.25 V | 3.0-3.6 V and 4.75-5.25 V |
| Temperature Grade | [DATA_NEEDED] | Commercial | Industrial (I) | Commercial | Industrial (I) |
| Programmability | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) | Antifuse (OTP) |
Key Differentiators
- Dual-voltage I/O simplifies 5V/3.3V mixed systems (vs A54SX16P-1PQG208)
- One-time-programmable antifuse security (vs SRAM FPGA alternatives (cross-family))
- Cost-optimized -1 speed grade (vs A54SX16-2PQG208I)
Design Notes
The A54SX16-1PQG208 requires two supply domains: 3.0-3.6V (core) and 4.75-5.25V (I/O). Decouple each rail at the package with at least 0.1 uF ceramic per supply pin group plus bulk 10 uF, and keep the 5V plane physically separated from sensitive analog sections because the I/O ring switches 5V-level signals. Power-up sequence and per-rail inrush should be verified against the family datasheet; an unsequenced ramp on the 5V domain can forward-bias I/O protection structures into an unpowered 3.3V bus.
The 208-BFQFP uses a 0.5 mm lead pitch on a 28x28 mm body. Route the land pattern with a standard QFP-208 footprint, fan out with 0.2 mm vias dog-bone style, and keep length-matched groups for parallel buses to preserve setup/hold at the -1 speed grade. Because the device is antifuse (one-time programmable), reserve testpoints on unused I/O during layout - after programming, unused pins cannot be re-purposed without a new device.
Three frequent mistakes with SX-family parts: (1) assuming the part is reprogrammable - antifuse devices are OTP, so verify the design fully in simulation and, where possible, validate on an SX-A SRAM-equivalent or development flow before programming production units; (2) swapping speed grades - a -2 netlist will not necessarily close timing on a -1 device; (3) ordering the wrong temperature suffix - commercial (no I) parts in industrial environments risk parametric violations. Confirm the exact suffix on the top mark before assembly.
Compliance Information
Compliance data not stated in retrieved sources for this exact MPN. Mature 0.35 um SX family order codes vary in RoHS/lead-finish status; verify the certificate on the Microchip product page before ordering.
