AMD XC4003-6PC84C

Overview

XC4003-6PC84C from Xilinx is a third-generation Field-Programmable Gate Array (FPGA) with 3,000 usable gates, 100 Configurable Logic Blocks (CLBs), and 360 flip-flops, fabricated in sub-micron CMOS. It supports system clock rates up to 50 MHz and is used in high-speed digital logic implementation, embedded control, and protocol bridging where reconfigurable logic density and fast carry propagation are required.

For engineers reviewing the XC4003-6PC84C datasheet, pinout, applications, or equivalent options, key selection criteria include CLB count (100), I/O count (80), 24 mA output sink capability per IOB, on-chip RAM support (3,200 bits), and compatibility with IEEE 1149.1 boundary-scan testing.

Technical Context

The XC4003-6PC84C implements a symmetric CLB architecture with two independent 4-input function generators (F' and G') plus a third 3-input H' generator combining F', G', and H1 - enabling single-block 5- to 9-input logic functions. Each CLB contains two edge-triggered D-type flip-flops with programmable asynchronous set/reset and dual-clock-edge triggering.

Routing resources include eight global low-skew clock or signal distribution nets, double-length interconnect lines for reduced skew, and dedicated wide-edge decoders (30 inputs per side). The device uses master/slave or peripheral configuration modes via external PROM or microprocessor interface, with CRC-protected bitstream loading.

Key Specifications

Pinout & Package

XC4003-6PC84C is packaged in an 84-pin plastic leaded chip carrier (PLCC), with 80 user I/O pins arranged in a square perimeter and four dedicated power/ground pins (VCC, GND ×3).

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC4003-6PC84C, the XC4003E-6PC84C delivers higher clock performance without layout change, while XC4004A-6PC84C offers scalable logic density within identical packaging - both require revalidation of timing constraints and bitstream regeneration.

Availability

XC4003-6PC84C is available at Aetrix Electronics and suitable for industrial motion control, legacy bus interface bridge, digital test equipment logic, and communications protocol engine applications requiring stable component supply and long-term obsolescence management.

Supply support for XC4003-6PC84C 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, Inc. is a pioneering semiconductor company founded in 1984, specializing in programmable logic devices and adaptive computing solutions.

The XC4000A family - including XC4003-6PC84C - was designed for cost-sensitive, medium-complexity reconfigurable logic applications requiring high I/O drive strength, on-chip memory, and IEEE 1149.1 testability in industrial and instrumentation systems.

FAQ

What is the maximum guaranteed system clock frequency for XC4003-6PC84C?

The XC4003-6PC84C is rated for synchronous system clock rates up to 50 MHz under worst-case commercial temperature and voltage conditions. This specification assumes full timing closure using Xilinx XACT software with -6 speed grade constraints and accounts for internal routing delays, CLB propagation, and setup/hold margins. Actual achievable frequency depends on design topology and placement density.

Does XC4003-6PC84C support in-system programming via JTAG?

Yes, XC4003-6PC84C includes IEEE 1149.1-compliant boundary-scan logic, enabling JTAG-based configuration bitstream loading, readback, and device-level testing. However, it does not support live reconfiguration during operation - configuration requires a full PROGRAM-initiated reload cycle. The JTAG interface operates at up to 10 MHz and supports daisy-chained debugging of multi-FPGA boards.

How many bits of on-chip RAM does XC4003-6PC84C provide?

XC4003-6PC84C provides 3,200 bits of distributed RAM, implemented as configurable memory within its 100 CLBs. Each CLB can be configured as either a 16×2-bit or 32×1-bit RAM block, with read access time matching logic delay (~5.5 ns) and write time of ~8 ns. This RAM is not contiguous but distributed - suitable for small FIFOs, status registers, or lookup tables, not large frame buffers.

Can XC4003-6PC84C outputs be paralleled for higher drive strength?

No - unlike XC4000H devices, XC4003-6PC84C belongs to the XC4000A family and does not support p-channel output transistors or hardware-configured output pairing. Its 24 mA per output is fixed and cannot be combined on-die. External wire-ANDing of adjacent outputs is not recommended due to timing skew and potential contention; use external buffer ICs for >24 mA loads.

What configuration modes are supported by XC4003-6PC84C?

XC4003-6PC84C supports six configuration modes: Master Serial, Slave Serial, Master SelectMAP, Slave SelectMAP, Peripheral Parallel, and Peripheral Serial. These allow flexible boot sources including external 18V PROMs, microprocessors, or host controllers. Configuration is initiated by driving PROGRAM low, followed by clocking the bitstream via DIN; INIT goes active low if CRC check fails or configuration is incomplete.