AMD XC4028XL-3HQ160C

Overview

XC4028XL-3HQ160C from Xilinx is a Field-Programmable Gate Array (FPGA) with 2,800 usable logic cells, 160-pin PQFP package, -3 speed grade (3.5 ns CLB delay), and 5V supply voltage. It implements custom digital logic in embedded control, protocol bridging, and real-time signal preprocessing applications.

For engineers reviewing the XC4028XL-3HQ160C datasheet, pinout, applications, or equivalent options, key selection criteria include logic density, I/O count (120 user I/Os), speed grade compatibility, and 5V TTL interface support.

Technical Context

The XC4028XL-3HQ160C uses Xilinx's second-generation FPGA architecture with configurable logic blocks (CLBs), input/output blocks (IOBs), and interconnect resources. It supports SRAM-based configuration, in-system programmability via JTAG, and boundary-scan testing per IEEE 1149.1.

It operates at 5V, features 120 user-programmable I/O pins with configurable slew rate and drive strength, and includes dedicated carry logic for high-speed arithmetic. Configuration is performed through external PROM or serial mode using the SelectMAP interface.

Key Specifications

Pinout & Package

XC4028XL-3HQ160C is housed in a 160-pin PQFP (Plastic Quad Flat Pack) package with 40 pins per side, 0.65 mm lead pitch, and exposed thermal pad not electrically connected. Pin functions are defined by configuration bitstream and IOB settings.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC4028XL-3HQ160C, the -2 variant improves timing margin but increases power slightly, while the XC4036XL-3HQ160C adds logic capacity without changing PCB layout-both retain full pin and software compatibility.

Availability

XC4028XL-3HQ160C is available at Aetrix Electronics and suitable for industrial motion controllers, legacy bus bridges, medical imaging preprocessors, and test equipment pattern generators requiring stable component supply and long-term obsolescence management.

Supply support for XC4028XL-3HQ160C 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 delivers programmable logic solutions for aerospace, industrial, and communications markets.

The XC4000XL family was designed for cost-sensitive, 5V-system embedded applications requiring reconfigurable logic with robust I/O and proven reliability in extended temperature environments.

FAQ

What is the maximum operating frequency supported by XC4028XL-3HQ160C?

The XC4028XL-3HQ160C has a -3 speed grade specifying a 3.5 ns CLB propagation delay, enabling internal logic operation up to approximately 200–250 MHz depending on design depth and routing. System-level clock frequencies are constrained by I/O timing, external memory access, and board-level signal integrity-not solely by the speed grade.

Does XC4028XL-3HQ160C support in-system programming?

Yes, XC4028XL-3HQ160C supports in-system programming via its JTAG TAP controller (TCK/TMS/TDI/TDO pins), compliant with IEEE 1149.1. Configuration bitstreams can be loaded dynamically without removing the device from the PCB, enabling field updates and diagnostic reconfiguration.

What power supply requirements does XC4028XL-3HQ160C have?

XC4028XL-3HQ160C requires a single 5.0 V ± 5% supply for both core logic and I/O banks. It draws up to 450 mA typical under full switching activity. Decoupling with 0.1 µF ceramic capacitors placed within 1 cm of each VCC/GND pin pair is mandatory for stable operation.

Can XC4028XL-3HQ160C interface directly with 3.3V logic devices?

No, XC4028XL-3HQ160C is a 5V-only device with TTL-compatible I/O thresholds. Direct connection to 3.3V logic requires level-shifting circuitry or bus-interface ICs; its IOBs do not support mixed-voltage operation or 3.3V-tolerant inputs.

Is XC4028XL-3HQ160C still in production or subject to obsolescence?

XC4028XL-3HQ160C is discontinued by AMD/Xilinx but remains available through authorized legacy distributors and Aetrix Electronics' long-term inventory program. Full lifecycle documentation, configuration tools, and migration support for newer Artix-7 or Spartan-7 equivalents are provided upon request.