AMD XC4028XL-1HQ240I

Overview

XC4028XL-1HQ240I from Xilinx is a Field-Programmable Gate Array (FPGA) with 28,000 usable gates, 240-pin PQFP package, -1 speed grade (10 ns CLB delay), and industrial temperature range (–40°C to +100°C). It implements synchronous digital logic in embedded control, protocol bridging, and real-time signal preprocessing systems.

For engineers reviewing the XC4028XL-1HQ240I datasheet, pinout, applications, or equivalent options, key selection factors include CLB count, I/O pin count, speed grade timing, industrial temperature rating, and configuration mode support (JTAG/serial).

Technical Context

The XC4028XL-1HQ240I uses Xilinx's second-generation FPGA architecture with configurable logic blocks (CLBs), input/output blocks (IOBs), and interconnect resources. It supports IEEE 1149.1 JTAG boundary-scan testing and serial or parallel configuration via external PROM.

It operates from a single 3.3 V supply, includes internal 5 V-tolerant I/Os, and features programmable slew-rate control and output drive strength per IOB. Configuration is volatile and requires external memory reload on power-up.

Key Specifications

Pinout & Package

XC4028XL-1HQ240I is housed in a 240-pin Plastic Quad Flat Pack (PQFP) with 0.5 mm lead pitch, 32.0 mm × 32.0 mm body size, and standard JEDEC MO-137AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC4028XL-1HQ240I, the XC4028XL-1HQ208I offers identical logic capacity but fewer I/Os in a smaller package, while the XCV300-4HQ240C delivers vastly higher density at the cost of 5 V compatibility and increased power - making XC4028XL-1HQ240I optimal for cost-sensitive industrial retrofits with legacy 5 V interfaces.

Availability

XC4028XL-1HQ240I is available at Aetrix Electronics and suitable for industrial motion control, legacy bus interface bridge, medical imaging preprocessing, and avionics data acquisition requiring stable component supply across extended product lifecycles.

Supply support for XC4028XL-1HQ240I 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, is a pioneer in programmable logic technology, specializing in FPGAs, adaptive SoCs, and ACAPs for high-performance computing and embedded systems.

The XC4000XL family was designed for cost-effective, low-power, industrial-grade reconfigurable logic in applications demanding 5 V compatibility and long-term availability - particularly in factory automation and test instrumentation.

FAQ

What is the configuration method supported by XC4028XL-1HQ240I?

The XC4028XL-1HQ240I supports master serial, slave serial, and JTAG configuration modes. It loads configuration data from external PROM via DIN pin in master serial mode or accepts bitstream through TDI during JTAG programming. The XC4028XL-1HQ240I does not support internal non-volatile configuration storage and requires external memory for power-on initialization.

Does XC4028XL-1HQ240I support hot-swap I/O operation?

No, XC4028XL-1HQ240I does not support hot-swap I/O. Its I/Os are 5 V-tolerant only when VCCO is powered and within specification; applying signals before power-up may damage the device. The XC4028XL-1HQ240I requires proper power sequencing - VCCO before I/O signals - to ensure safe operation.

What is the maximum operating frequency achievable with XC4028XL-1HQ240I?

The XC4028XL-1HQ240I has a -1 speed grade specifying 10 ns CLB propagation delay, enabling typical system clock frequencies up to 80 MHz in well-constrained designs. Actual maximum frequency depends on logic depth, routing congestion, and I/O timing; the XC4028XL-1HQ240I datasheet provides detailed timing models for static analysis.

Is XC4028XL-1HQ240I RoHS compliant?

Yes, XC4028XL-1HQ240I is RoHS compliant and lead-free, meeting EU Directive 2011/65/EU requirements. The device uses matte tin finish on leads and complies with JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for surface-mount assembly. This applies to all current production lots of XC4028XL-1HQ240I.

Can XC4028XL-1HQ240I be reprogrammed in-system?

Yes, XC4028XL-1HQ240I supports in-system programming via its JTAG interface (TCK/TMS/TDI/TDO pins). Using standard IEEE 1149.1 tools, the XC4028XL-1HQ240I can be reconfigured without removal from the PCB, enabling field updates and design validation during development and maintenance phases.