AMD XCS30-4PQ208C

Overview

XCS30-4PQ208C from AMD (formerly Xilinx) is a Spartan-3 FPGA with 30,000 system gates, 208-pin PQFP package, 3.3 V I/O voltage, and -4 speed grade. It integrates configurable logic blocks, distributed RAM, and DLL-based clock management for embedded control and interface bridging in industrial PLCs and communication line cards.

For engineers reviewing the XCS30-4PQ208C datasheet, pinout, applications, or equivalent options, key selection factors include I/O count (173 user I/Os), DLL support for input deskew, Tj max of 85°C, and compatibility with Xilinx ISE 14.7 design tools.

Technical Context

The XCS30-4PQ208C implements a fine-grained, SRAM-based architecture with 1,728 configurable logic blocks (CLBs), each containing two 4-input LUTs and flip-flops. It supports LVCMOS, LVTTL, and PCI I/O standards with programmable slew rate and drive strength.

Its Digital Clock Manager (DCM) provides input jitter filtering, frequency synthesis (×2, ÷2, ÷4), and phase shifting (–180° to +180°). Configuration is performed via master serial mode using external PROM or JTAG boundary-scan.

Key Specifications

Pinout & Package

208-pin Plastic Quad Flat Pack (PQFP), 28 × 28 mm body, 0.5 mm pitch, JEDEC MS-026AC compliant. RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA-based interface and control applications.

Compared with XCS30-5PQ208C and XCS30-4PQ208I, the XCS30-4PQ208C offers optimal cost-performance balance for commercial-temperature, fixed-function control applications where timing margin is sufficient and thermal management is controlled.

Availability

XCS30-4PQ208C is available at Aetrix Electronics and suitable for industrial motion control, telecom line card development, and legacy bus interface bridge designs requiring stable component supply and long-term obsolescence planning.

Supply support for XCS30-4PQ208C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

AMD acquired Xilinx in 2022 and now oversees the Spartan family of cost-optimized FPGAs originally developed for high-volume embedded applications.

The Spartan-3 series, including XCS30-4PQ208C, was designed to deliver gate density and I/O flexibility for industrial control, communications infrastructure, and test equipment where ASIC NRE costs are prohibitive.

FAQ

What is the maximum operating frequency supported by the XCS30-4PQ208C?

The XCS30-4PQ208C has a -4 speed grade, guaranteeing CLB-to-CLB path timing closure up to 210 MHz under worst-case commercial conditions (3.3 V, 85°C). Actual achievable system clock frequency depends on design topology, placement, and routing - verified using Xilinx ISE 14.7 timing analysis tools. The XCS30-4PQ208C DCM can generate higher-frequency clocks internally, but logic propagation limits remain bound by the -4 rating.

Does the XCS30-4PQ208C support JTAG programming and debugging?

Yes, the XCS30-4PQ208C includes full IEEE 1149.1-compliant JTAG boundary-scan circuitry accessible via TCK, TMS, TDI, and TDO pins. This enables in-system programming, configuration verification, and real-time debugging without requiring dedicated configuration PROM. The XCS30-4PQ208C supports both JTAG and master serial configuration modes.

What power supplies are required for the XCS30-4PQ208C?

The XCS30-4PQ208C requires two separate regulated supplies: 1.2 V ±3% for VCCINT (core logic) and 3.3 V for VCCO (I/O banks). Each I/O bank may be powered independently, allowing mixed-voltage operation. Decoupling capacitors must be placed within 10 mm of respective supply pins per Xilinx UG071 guidelines. The XCS30-4PQ208C does not integrate voltage regulation.

Can the XCS30-4PQ208C replace older XCS30-3PQ208C designs?

Yes, the XCS30-4PQ208C is pin-compatible and functionally backward-compatible with the -3 speed grade. It operates at the same voltages and uses identical configuration methods. The XCS30-4PQ208C offers improved timing margin and lower static power than the -3 variant, making it a drop-in upgrade for existing PCBs where timing closure was marginal or thermal headroom is constrained.

Is the XCS30-4PQ208C still in production or subject to obsolescence?

The XCS30-4PQ208C is listed as NRND (Not Recommended for New Designs) by AMD/Xilinx, but remains actively stocked and supported through Aetrix Electronics' long-term component program. Last-time-buy notices have not been issued, and Aetrix maintains traceable inventory with documented lot traceability and extended lifecycle coordination for ongoing production runs of legacy systems relying on the XCS30-4PQ208C.