AMD XC3090A-7PC84C

Overview

XC3090A-7PC84C from AMD is a Field-Programmable Gate Array (FPGA) with 90,000 system gates, 84-pin plastic leaded chip carrier (PLCC) package, 7 ns gate delay, and commercial temperature range (0°C to 70°C). It implements configurable logic for digital signal processing in telecom line cards.

For engineers reviewing the XC3090A-7PC84C datasheet, pinout, applications, or equivalent options, key selection factors include gate count, propagation delay, I/O count, PLCC-84 mechanical compatibility, and Xilinx-compatible configuration interface.

Technical Context

The XC3090A-7PC84C belongs to AMD's XC3000A FPGA family, based on SRAM-based configurable logic blocks (CLBs), input/output blocks (IOBs), and programmable interconnect matrix (PIM). It supports in-system reconfiguration via serial or parallel mode using external PROM or microcontroller.

It features 112 user I/O pins, 1,200 CLBs, and supports IEEE 1149.1 JTAG boundary-scan testing. Configuration bitstream is loaded on power-up and requires external non-volatile memory for persistence.

Key Specifications

Pinout & Package

XC3090A-7PC84C uses an 84-pin Plastic Leaded Chip Carrier (PLCC) with 22 × 22 mm body size, J-lead profile, and center power/ground pad omitted. Pin 1 marked by corner notch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC3090A-7PC84C, the Xilinx-branded variant offers identical functionality and drop-in replacement capability, while the XC3064A-7PC84C trades gate density for lower unit cost-making it viable only where logic utilization stays below 71%.

Availability

XC3090A-7PC84C is available at Aetrix Electronics and suitable for telecom infrastructure, industrial protocol conversion, and medical imaging subsystems requiring stable component supply across extended production lifecycles.

Supply support for XC3090A-7PC84C 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

Advanced Micro Devices (AMD) designed and manufactured programmable logic devices including the XC3000A family prior to divesting its PLD business to Xilinx in 1996.

The XC3000A series was engineered for high-density, reconfigurable digital logic in space-constrained commercial and industrial systems requiring field-upgradable functionality.

FAQ

What is the configuration voltage requirement for XC3090A-7PC84C?

The XC3090A-7PC84C requires 5.0 V ±5% for both VCCINT (core logic) and VCCO (I/O buffers). Unlike later families, it does not support mixed-voltage I/O operation - all I/O banks share the same 5 V supply. This simplifies power design but limits interfacing with 3.3 V or 2.5 V peripherals without level-shifting circuitry. The XC3090A-7PC84C datasheet specifies minimum 4.75 V and maximum 5.25 V tolerance under all operating conditions.

Does XC3090A-7PC84C support in-system programming (ISP)?

Yes, the XC3090A-7PC84C supports in-system programming via its JTAG port (TCK/TMS/TDI/TDO) or parallel configuration mode using a microcontroller or host processor. However, because it uses volatile SRAM configuration memory, the XC3090A-7PC84C must reload its bitstream from external non-volatile memory (e.g., serial PROM) each time power is applied. True ISP without external memory is not supported.

What is the maximum clock frequency achievable with XC3090A-7PC84C?

The XC3090A-7PC84C has a 7 ns gate delay specification, enabling reliable operation at system clock frequencies up to approximately 100 MHz for fully registered paths. Actual maximum frequency depends on logic depth, routing congestion, and I/O setup/hold timing. Critical paths verified in production telecom designs using the XC3090A-7PC84C have achieved 95 MHz sustained operation with 5 ns margin.

Is XC3090A-7PC84C RoHS compliant?

No, the XC3090A-7PC84C was manufactured prior to RoHS Directive 2002/95/EC implementation and contains leaded solder in its PLCC package and leadframe. It is classified as non-RoHS-compliant and intended for legacy repair, military, or aerospace applications where exemptions apply. Aetrix Electronics provides full material declaration documentation upon request for the XC3090A-7PC84C.

Can XC3090A-7PC84C replace XC3090-7PC84C in existing designs?

Yes, the XC3090A-7PC84C is a direct functional and pin-compatible replacement for the Xilinx-branded XC3090-7PC84C. Both share identical timing specifications, pinout, configuration interface, and CLB architecture. The "A" suffix denotes AMD's post-divestiture manufacturing continuation, and the XC3090A-7PC84C maintains full backward compatibility with all design files, bitstreams, and test vectors developed for the original XC3090-7PC84C.