AMD XC4028XL-2BG352I

Overview

XC4028XL-2BG352I from Xilinx is a Field-Programmable Gate Array (FPGA) with 28,000 system gates, 352-pin Ball Grid Array (BGA) package, -2 speed grade, and industrial temperature range (-40°C to +100°C); used in reconfigurable digital logic systems for prototyping and low-volume production.

For engineers reviewing the XC4028XL-2BG352I datasheet, pinout, applications, or equivalent options, key selection factors include logic capacity, I/O count, speed grade timing compliance, BGA thermal and routing constraints, and legacy 5V-tolerant I/O support.

Technical Context

The XC4028XL-2BG352I implements configurable logic blocks (CLBs), input/output blocks (IOBs), and interconnect resources using Xilinx's second-generation FPGA architecture. It supports 5V-tolerant I/Os with programmable slew rate and drive strength, and includes dedicated carry logic for high-speed arithmetic.

This device uses SRAM-based configuration memory, requiring external PROM or processor-based initialization at power-up. Configuration bitstream compatibility is limited to the XC4000XL family; it is not compatible with XC4000E or XC5200 series bitstreams.

Key Specifications

Pinout & Package

XC4028XL-2BG352I is housed in a 352-ball fine-pitch BGA (FBGA) package with 1.27 mm ball pitch, JEDEC MO-205AC compliant, and thermal pad exposed on underside for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC4028XL-2BG352I, the -1 variant improves timing margin without altering footprint or power, while the XC4036XL-2BG352I offers scalable logic density within identical thermal and board layout constraints.

Availability

XC4028XL-2BG352I is available at Aetrix Electronics and suitable for industrial motion control, avionics test equipment, and medical imaging subsystems requiring stable component supply across extended product lifecycles.

Supply support for XC4028XL-2BG352I 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 the XC4000 family as its first widely adopted programmable logic platform.

The XC4000XL product line was designed for cost-sensitive, high-reliability industrial and aerospace applications requiring 5V operation and long-term obsolescence support.

FAQ

What is the configuration method supported by XC4028XL-2BG352I?

XC4028XL-2BG352I supports Master Serial, Slave Parallel, and JTAG boundary-scan configuration modes. Master Serial uses an external PROM to load the bitstream automatically at power-up. Slave Parallel allows a host processor to write configuration data directly to the device. JTAG is used for debugging and in-system programming. All three methods initialize the same SRAM-based logic fabric in XC4028XL-2BG352I.

Does XC4028XL-2BG352I support hot-swap operation?

Yes, XC4028XL-2BG352I includes HSWAP_EN pin functionality that enables bus-hold circuits on I/O pins during power transitions. When asserted, it prevents floating inputs and maintains valid logic states during live insertion or removal. This feature is documented in the XC4000XL family datasheet and applies specifically to XC4028XL-2BG352I under industrial voltage ramp conditions.

What is the maximum operating frequency for XC4028XL-2BG352I?

The maximum guaranteed operating frequency for XC4028XL-2BG352I is determined by its -2 speed grade, which specifies a worst-case CLB-to-CLB delay of 2.0 ns. Actual system clock frequency depends on design topology, but synchronous logic paths can achieve up to 50 MHz in typical implementations. Timing analysis must be performed using Xilinx Foundation or Alliance software targeting XC4028XL-2BG352I.

Is XC4028XL-2BG352I RoHS compliant?

No, XC4028XL-2BG352I is a legacy device manufactured prior to RoHS Directive 2002/95/EC enforcement and contains leaded solder in its BGA interconnect. It is exempt from current RoHS requirements under Annex III for industrial monitoring and control equipment, and remains available for repair and legacy system continuity under Aetrix Electronics' extended lifecycle program.

Can XC4028XL-2BG352I replace XC4028E-2BG352I in existing designs?

No, XC4028XL-2BG352I is not a drop-in replacement for XC4028E-2BG352I. While both share the same pinout and speed grade, the XL version uses different configuration bitstream format, lower static power, and modified I/O drive characteristics. Bitstream incompatibility and altered VCCIO behavior require full re-synthesis and timing verification before substituting XC4028XL-2BG352I in an XC4028E-based design.