AMD XC4008E-1PC84C

Overview

XC4008E-1PC84C from Xilinx is a Field-Programmable Gate Array (FPGA) with 8,000 usable gates, 84-pin plastic leaded chip carrier (PLCC) package, -1 speed grade (10 ns propagation delay), and commercial temperature range (0°C to 70°C). It implements synchronous digital logic in embedded control and interface bridging applications.

For engineers reviewing the XC4008E-1PC84C datasheet, pinout, applications, or equivalent options, key selection criteria include gate count, I/O count (69 user I/Os), speed grade timing, PLCC-84 mechanical compatibility, and legacy 5 V CMOS interface support.

Technical Context

The XC4008E-1PC84C belongs to Xilinx's XC4000E FPGA family, built on a 0.5 µm CMOS process. It features configurable logic blocks (CLBs), input/output blocks (IOBs), and programmable interconnect resources. Configuration is performed via serial or parallel mode using external PROM or microprocessor.

It supports IEEE Std 1149.1 (JTAG) boundary-scan testing and in-system programming. The device uses SRAM-based configuration memory, requiring reconfiguration at power-up unless paired with an external configuration PROM.

Key Specifications

Pinout & Package

XC4008E-1PC84C is housed in an 84-pin Plastic Leaded Chip Carrier (PLCC) with J-lead geometry and 0.05 inch pitch. The package is lead-free compliant per J-STD-609 Class 1 and RoHS Directive 2011/65/EU.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC4008E-1PC84C, the -2 variant trades speed for cost in timing-margin-rich designs, while the XC4010E-1PC84C provides headroom for logic expansion within identical mechanical and electrical constraints.

Availability

XC4008E-1PC84C is available at Aetrix Electronics and suitable for industrial control, test equipment, and avionics subsystems requiring stable component supply and long-term obsolescence management.

Supply support for XC4008E-1PC84C 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

Xilinx, now part of AMD, pioneered commercial FPGA technology and developed scalable programmable logic architectures for aerospace, defense, and industrial markets.

The XC4000E family was engineered for high-reliability 5 V system integration, emphasizing predictable timing, JTAG testability, and drop-in replacement of TTL/SSI logic in legacy upgrades.

FAQ

What is the maximum clock frequency supported by XC4008E-1PC84C?

The XC4008E-1PC84C has a -1 speed grade specifying 10 ns CLB propagation delay, enabling synchronous operation up to approximately 66 MHz under typical conditions. Actual maximum frequency depends on design topology, routing, and I/O loading. Static timing analysis using Xilinx Foundation or Alliance software is required to verify timing closure for a given implementation of XC4008E-1PC84C.

Does XC4008E-1PC84C support in-system programming?

XC4008E-1PC84C supports in-system configuration via JTAG (IEEE 1149.1) boundary-scan interface, but its SRAM-based configuration memory requires external reprogramming on each power cycle. True nonvolatile in-system programmability is not inherent to XC4008E-1PC84C and necessitates pairing with an external serial PROM or microcontroller-based loader.

Can XC4008E-1PC84C operate at 3.3 V?

No, XC4008E-1PC84C is specified only for 5.0 V ±10% operation. Its internal circuitry, I/O buffers, and configuration logic are designed for 5 V CMOS voltage levels. Operating at 3.3 V will result in undefined behavior, failed configuration, or permanent damage. Level-shifting circuitry is mandatory when interfacing XC4008E-1PC84C with 3.3 V systems.

What configuration methods are supported by XC4008E-1PC84C?

XC4008E-1PC84C supports master serial, slave serial, and slave parallel configuration modes. These allow loading of bitstream data from external PROMs, microprocessors, or JTAG debuggers. The device does not include on-chip nonvolatile memory, so configuration must be externally provided at power-up for every XC4008E-1PC84C deployment.

Is XC4008E-1PC84C RoHS compliant?

Yes, XC4008E-1PC84C meets RoHS Directive 2011/65/EU requirements. The PLCC-84 package uses lead-free terminations compliant with J-STD-609 Class 1, and all homogeneous materials have been verified to contain restricted substances below threshold limits. Full compliance documentation is available upon request for XC4008E-1PC84C.