AMD XCS40XL-5PQG208C

Overview

XCS40XL-5PQG208C from AMD is a Spartan-XL family FPGA with 40,000 system gates, 5 ns maximum input-to-output delay, and 208-pin PQFP package; it integrates configurable logic blocks, I/O banks supporting 3.3 V and 5 V interfaces, and dedicated global clock routing for industrial control and communication interface design.

For engineers reviewing the XCS40XL-5PQG208C datasheet, pinout, applications, or equivalent options, key selection criteria include system gate count, I/O voltage compatibility, clock resource architecture, and PQFP thermal performance in space-constrained embedded systems.

Technical Context

The XCS40XL-5PQG208C implements a hierarchical CLB-based architecture with four-input LUTs and flip-flops per logic cell, supporting synchronous logic synthesis. It features eight global clock lines with low-skew distribution and supports IEEE 1149.1 JTAG boundary-scan testing.

I/O banks are independently configurable for LVTTL, LVCMOS, and PCI-compliant signaling; each bank includes programmable slew rate and drive strength control. The device operates over commercial temperature range (0°C to 70°C) with 3.3 V core supply and mixed-voltage I/O support.

Key Specifications

Pinout & Package

PQFP-208 package with 208 leads, gull-wing terminations, and 0.5 mm pitch; body size 28 mm × 28 mm, height 3.35 mm; JEDEC MS-026 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XCS30XL-5PQ208C and XCS50XL-5PQ208C, the XCS40XL-5PQG208C offers balanced gate density for mid-tier control logic-avoiding underutilization of the 50K variant while providing margin over the 30K part's routing and timing closure limits.

Availability

XCS40XL-5PQG208C is available at Aetrix Electronics and suitable for industrial automation, communications infrastructure, and medical device design requiring stable component supply and long-term obsolescence planning.

Supply support for XCS40XL-5PQG208C 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 is a global semiconductor leader delivering adaptive computing solutions including FPGAs, adaptive SoCs, and AI accelerators for data center, edge, and embedded markets.

The Spartan-XL family was designed for cost-sensitive, high-volume embedded applications requiring reliable non-volatile configuration, mixed-voltage I/O, and predictable timing behavior-targeting industrial control, test equipment, and communications line cards.

FAQ

What is the configuration method supported by XCS40XL-5PQG208C?

The XCS40XL-5PQG208C supports master serial configuration using an external XCFxxP PROM, as well as JTAG boundary-scan programming. It does not support slave parallel or selectMAP modes. Configuration bitstream is stored in on-chip antifuse technology, making it non-volatile and immune to radiation-induced reconfiguration-critical for XCS40XL-5PQG208C deployments in industrial environments where power cycling is frequent.

Does XCS40XL-5PQG208C support hot-swap I/O capability?

No, XCS40XL-5PQG208C does not support hot-swap I/O. Its I/O pins lack programmable bus-hold or weak pull-up features required for safe insertion into live backplanes. The device requires power and configuration to be established before asserting signals on any I/O pin. This limitation applies to all Spartan-XL devices, including the XCS40XL-5PQG208C, and must be accounted for in system-level power sequencing design.

What is the maximum operating frequency for internal logic in XCS40XL-5PQG208C?

The XCS40XL-5PQG208C has a 5 ns input-to-output delay specification, which corresponds to a theoretical maximum system clock frequency of approximately 125 MHz for fully registered I/O paths. Internal logic performance depends on placement and routing; typical fully pipelined arithmetic logic achieves 80–100 MHz in real designs. This timing behavior is consistent across all speed-grade -5 devices in the Spartan-XL family, including the XCS40XL-5PQG208C.

Can XCS40XL-5PQG208C operate with 2.5 V I/O standards?

No, XCS40XL-5PQG208C does not support 2.5 V I/O standards. Its I/O banks accept only 3.3 V or 5 V VCCO supplies and are specified for LVTTL, LVCMOS33, and PCI signaling. Attempting to drive or receive 2.5 V logic levels may result in incorrect sampling or excessive input current due to threshold mismatch. This constraint applies identically to the XCS40XL-5PQG208C and all other Spartan-XL PQFP variants.

Is XCS40XL-5PQG208C pin-compatible with newer Spartan families?

No, XCS40XL-5PQG208C is not pin-compatible with Spartan-II, Spartan-III, or later families. It uses antifuse-based configuration and a unique PQFP-208 pinout optimized for Spartan-XL architecture-including dedicated global clock inputs and bank-specific VCCO assignments not replicated in SRAM-based successors. Migration to newer families requires PCB redesign and logic reimplementation, even for the XCS40XL-5PQG208C's functional equivalents.