AMD XCS20XL-5PQ208C

Overview

XCS20XL-5PQ208C from AMD (formerly Xilinx) is a Spartan-XL family FPGA with 20,000 system gates, 5 ns maximum input-to-output delay, and PQ208 (Plastic Quad Flat Package, 208-pin)封装. It integrates configurable logic blocks, I/O blocks, and interconnect resources for digital logic implementation in industrial control and communication interface designs.

For engineers reviewing the XCS20XL-5PQ208C datasheet, pinout, applications, or equivalent options, key selection criteria include system gate count, propagation delay, I/O count, voltage supply range, and configuration mode support.

Technical Context

The XCS20XL-5PQ208C implements a fine-grain, SRAM-based architecture with dedicated carry logic for arithmetic functions and distributed RAM for small memory structures. It supports in-system programmability via JTAG boundary-scan and serial PROM configuration.

Configuration is performed through master serial, slave serial, or boundary-scan modes using 5.0 V supply. I/O pins are 5V-tolerant and support LVTTL and LVCMOS standards with programmable slew rate and drive strength.

Key Specifications

Pinout & Package

PQ208 is a 28 × 28 mm plastic quad flat package with 208 leads, 0.5 mm pitch, and exposed thermal pad. Pin numbering follows standard counter-clockwise convention starting from corner mark.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA-based logic replacement applications.

Compared with XCS30XL-5PQ208C and XCS10XL-5PQ208C, the XCS20XL-5PQ208C offers balanced gate density for mid-complexity logic integration-neither under-resourced nor over-spec'd-while maintaining full pin compatibility and timing equivalence within the Spartan-XL PQ208 family.

Availability

XCS20XL-5PQ208C is available at Aetrix Electronics and suitable for industrial control, communications infrastructure, and motor drive applications requiring stable component supply and long-term obsolescence management.

Supply support for XCS20XL-5PQ208C 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 develops and supports the legacy Spartan product families including Spartan-XL.

The Spartan-XL family was designed for cost-sensitive, high-volume applications requiring reliable 5 V logic integration with moderate complexity-especially in industrial and communications equipment where long-lifecycle support is essential.

FAQ

What is the configuration method supported by XCS20XL-5PQ208C?

The XCS20XL-5PQ208C supports master serial, slave serial, and IEEE 1149.1 JTAG boundary-scan configuration modes. It uses external serial PROM or a host processor to load configuration bitstream on power-up or during in-system reprogramming. The XCS20XL-5PQ208C does not support slave parallel or selectMAP modes.

Is XCS20XL-5PQ208C pin-compatible with other Spartan-XL devices in PQ208 package?

Yes, the XCS20XL-5PQ208C shares identical pinout and package dimensions with XCS10XL-5PQ208C and XCS30XL-5PQ208C. All three devices use the same PQ208 footprint, power pin assignments, and I/O bank organization, enabling drop-in gate-count upgrades or downgrades without PCB revision.

What is the maximum operating frequency achievable with XCS20XL-5PQ208C?

The XCS20XL-5PQ208C has a 5 ns input-to-output delay specification, corresponding to a theoretical maximum toggle rate of ~100 MHz for simple registered I/O paths. Actual system clock frequency depends on logic depth, routing congestion, and I/O standard setup/hold requirements-not a fixed fMAX value.

Does XCS20XL-5PQ208C support 3.3 V I/O operation?

No, the XCS20XL-5PQ208C is a 5 V-only device. Its I/Os are 5 V-tolerant but require VCC = 5.0 V ±10% and do not support 3.3 V or lower signaling standards. Using 3.3 V interface levels may cause unreliable operation or damage due to internal clamp diode activation.

Can XCS20XL-5PQ208C be reprogrammed in the field without removing it from the PCB?

Yes, the XCS20XL-5PQ208C supports in-system programming via its JTAG TAP controller or serial configuration interface. Field updates can be performed using standard boundary-scan tools or a microcontroller-driven serial loader-no socket removal or UV erasure is needed for the XCS20XL-5PQ208C.