AMD XC4028XL-3BG352I

Overview

XC4028XL-3BG352I from Xilinx is a Field-Programmable Gate Array (FPGA) with 28,000 usable gates, 352-pin Ball Grid Array (BGA) package, -3 speed grade (3.3 V I/O, 3.5 ns CLB delay), and industrial temperature range (-40°C to +100°C). It implements configurable logic for digital signal processing in telecom line cards.

For engineers reviewing the XC4028XL-3BG352I datasheet, pinout, applications, or equivalent options, key selection criteria include gate count, I/O voltage compatibility, timing performance at industrial temperature, and BGA soldering requirements for high-density PCBs.

Technical Context

The XC4028XL-3BG352I belongs to the Xilinx XC4000XL family, featuring CMOS-based configurable logic blocks (CLBs), input/output blocks (IOBs), and interconnect resources. It supports IEEE 1149.1 JTAG boundary-scan testing and uses SRAM-based configuration memory loaded at power-up.

Configuration is performed via serial or parallel mode using an external PROM or microprocessor. The device includes dedicated carry logic for fast arithmetic and distributed RAM capability within CLBs for small data storage functions.

Key Specifications

Pinout & Package

XC4028XL-3BG352I is housed in a 352-pin Fine-Pitch Ball Grid Array (FBGA) package with 35 × 35 array, 1.27 mm ball pitch, and standard JEDEC MO-205AC footprint. Pinout includes dedicated configuration pins (INIT, PROGRAM, DONE), JTAG test interface (TCK/TMS/TDI/TDO), dual-purpose I/O banks supporting LVTTL/LVCMOS, and global clock inputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC4028XL-3BG352I, XCV300-4BG352C offers scalable logic capacity but increases power and cost, while XC4025XL-3PQ208I reduces I/O flexibility and density-neither is pin-compatible, and both require PCB redesign.

Availability

XC4028XL-3BG352I is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and medical imaging systems requiring stable component supply across extended product lifecycles.

Supply support for XC4028XL-3BG352I 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 high-performance digital systems.

The XC4000XL family was designed for cost-sensitive, low-power industrial and communications applications requiring reconfigurable logic with guaranteed timing at 3.3 V operation.

FAQ

What is the maximum operating frequency supported by XC4028XL-3BG352I?

The XC4028XL-3BG352I has a -3 speed grade specifying a 3.5 ns CLB propagation delay, enabling reliable operation up to 125 MHz for register-to-register paths under industrial temperature conditions. Actual system frequency depends on design routing, resource utilization, and I/O timing constraints-not a fixed clock limit.

Does XC4028XL-3BG352I support in-system programming (ISP)?

Yes, XC4028XL-3BG352I supports in-system programming via its IEEE 1149.1 JTAG interface (TCK/TMS/TDI/TDO pins). Configuration bitstream can be reloaded through JTAG without removing the device from the board, enabling field updates and debugging of the XC4028XL-3BG352I logic design.

What configuration memory is required for XC4028XL-3BG352I?

XC4028XL-3BG352I requires external configuration memory, typically a serial PROM (e.g., Xilinx XC18V02) or parallel PROM. The XC4028XL-3BG352I loads its configuration bitstream at power-up; no internal non-volatile storage is present, so the PROM must be correctly programmed and connected to the XC4028XL-3BG352I PROGRAM and INIT pins.

Is XC4028XL-3BG352I RoHS compliant?

XC4028XL-3BG352I is manufactured with lead-free terminations and complies with RoHS Directive 2011/65/EU. The "I" suffix denotes industrial temperature grade and lead-free packaging; full compliance documentation is available in Xilinx's official product change notices for the XC4000XL family.

Can XC4028XL-3BG352I operate with 5 V-tolerant I/Os?

No, XC4028XL-3BG352I supports only 3.3 V LVTTL/LVCMOS I/O standards and is not 5 V tolerant. Connecting 5 V signals directly to XC4028XL-3BG352I I/O pins may cause damage. Level-shifting circuitry or interface buffers are required when interfacing with 5 V systems.