AMD XC4008E-1PQ208C

Overview

XC4008E-1PQ208C from Xilinx is a Field-Programmable Gate Array (FPGA) with 8,000 usable gates, 208-pin Plastic Quad Flat Package (PQFP), -1 speed grade (10 ns CLB propagation delay), and commercial temperature range (0°C to 70°C). It implements synchronous digital logic in embedded control, protocol bridging, and glue-logic replacement applications.

For engineers reviewing the XC4008E-1PQ208C datasheet, pinout, applications, or equivalent options, key selection factors include gate count, I/O count (168 user I/Os), speed grade timing, PQ208 package compatibility, and legacy 5V CMOS interface support.

Technical Context

The XC4008E-1PQ208C belongs to the Xilinx XC4000E FPGA family, built on 0.5 µm CMOS technology with configurable logic blocks (CLBs), input/output blocks (IOBs), and interconnect resources. It supports SRAM-based configuration via serial or parallel mode and includes dedicated carry logic for arithmetic functions.

It features 5V-tolerant I/Os compatible with TTL and CMOS levels, internal three-state bus drivers, and programmable output slew rate control. Configuration data is volatile and requires external PROM or processor loading at power-up.

Key Specifications

Pinout & Package

XC4008E-1PQ208C uses a 208-pin PQFP (Plastic Quad Flat Package) with 52 pins per side, 0.5 mm lead pitch, and 28 mm × 28 mm body size. Pin numbering follows standard counter-clockwise convention starting from the index corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC4008E-1PQ208C, the XC4010E-1PQ208C offers headroom for future feature expansion without PCB changes, while the XC4005E-1PQ208C reduces BOM cost and static power in resource-constrained implementations - both retain identical timing, packaging, and configuration architecture.

Availability

XC4008E-1PQ208C is available at Aetrix Electronics and suitable for industrial control, test instrumentation, and legacy avionics upgrades requiring stable component supply and long-term obsolescence management.

Supply support for XC4008E-1PQ208C 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 high-reliability embedded systems.

The XC4000E family was engineered for 5V system integration, offering predictable timing, mature toolchain support (XACT, Foundation), and drop-in replacement capability for TTL/PLD-based designs.

FAQ

What is the configuration method supported by XC4008E-1PQ208C?

The XC4008E-1PQ208C supports master serial, slave serial, and boundary-scan (JTAG) configuration modes. It loads configuration data from external PROM or microcontroller via DIN pin in master serial mode, or accepts bitstream from host processor in slave mode. JTAG enables in-system programming and debugging without dedicated configuration hardware.

Does XC4008E-1PQ208C support 3.3 V I/O operation?

No, XC4008E-1PQ208C operates exclusively at 5.0 V ±5% for both core and I/O supplies. Its IOBs are 5V-tolerant but not 3.3V-compatible - interfacing with 3.3V systems requires external level-shifting circuitry. The device lacks internal voltage regulators or dual-supply I/O structures.

What is the maximum operating frequency of XC4008E-1PQ208C?

The XC4008E-1PQ208C has a -1 speed grade specifying 10 ns CLB propagation delay. Maximum system clock frequency depends on design topology, but typical register-to-register paths achieve 80–100 MHz in well-constrained implementations. Critical paths involving long interconnect or multiple logic levels may limit practical performance.

Is XC4008E-1PQ208C still in production?

No, XC4008E-1PQ208C is obsolete and no longer manufactured by AMD/Xilinx. Aetrix Electronics provides sourced, tested, and traceable inventory for legacy system maintenance and repair. Long-term availability is managed through controlled distribution and lifecycle monitoring.

Can XC4008E-1PQ208C be reprogrammed in-system?

Yes, XC4008E-1PQ208C supports in-system reprogramming via its JTAG port (TCK, TMS, TDI, TDO, TCK) or serial configuration interface. Reprogramming requires external configuration source and proper reset sequencing; the device retains no non-volatile configuration memory and must be reloaded after each power cycle.