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AMD XC4028XL-3BG256C
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- Part No.:
- XC4028XL-3BG256C
- Manufacturer:
- AMD
- Category:
- FPGAs (Field Programmable Gate Array)
- Package:
- 256-BBGA
- Datasheet:
-
XC4028XL-3BG256C.pdf
- Description:
- IC FPGA 205 I/O 256BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,052
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Product details
Overview
XC4028XL-3BG256C from Xilinx is a Field-Programmable Gate Array (FPGA) with 2,800 usable logic gates, 256-pin Ball Grid Array (BGA) package, -3 speed grade (3.3 V I/O, 3.5 ns CLB delay), and commercial temperature range (0°C to 70°C). It serves as a reconfigurable digital logic fabric in embedded control and interface bridging applications.
For engineers reviewing the XC4028XL-3BG256C datasheet, pinout, applications, or equivalent options, key selection criteria include logic capacity, I/O count (192 user I/Os), speed grade timing compliance, BGA thermal and routing constraints, and legacy 5 V tolerant configuration interface support.
Technical Context
The XC4028XL-3BG256C implements a hierarchical architecture with Configurable Logic Blocks (CLBs), Input/Output Blocks (IOBs), and interconnect resources. It supports SRAM-based configuration via JTAG or master serial mode using external PROM, and includes dedicated carry logic for high-speed arithmetic.
It features 5 V-tolerant I/Os compatible with LVTTL and CMOS levels, internal 3.3 V core voltage, and supports boundary-scan testing per IEEE 1149.1. Configuration bitstream integrity is maintained through CRC checking during startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Gates | 2,800 usable gates - defines maximum combinational logic density for custom state machines or glue logic replacement. |
| User I/O Pins | 192 - supports wide parallel interfaces such as ISA, PC/104, or multi-channel data acquisition buses. |
| Speed Grade | -3 - guarantees 3.5 ns CLB propagation delay and 110 MHz maximum system clock frequency under commercial conditions. |
| Supply Voltage | Core: 3.3 V ± 5%; I/O: 5 V tolerant - enables direct interfacing with legacy 5 V peripherals without level shifters. |
| Operating Temperature | 0°C to 70°C - validated for use in office, lab, and non-extended industrial environments. |
| Package | 256-pin Fine-Pitch BGA (BG256) - 1.27 mm pitch, 17 mm × 17 mm body, requires controlled-depth reflow and X-ray inspection. |
Pinout & Package
XC4028XL-3BG256C is housed in a 256-ball fine-pitch BGA (package code BG256) with 16 × 16 array, 1.27 mm ball pitch, and thermal pad-less construction. Pin functions follow Xilinx XC4000XL family standard assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PROGRAM | Configuration Initiation | Active-low signal that resets configuration memory and initiates reload from PROM or JTAG chain. |
| DIN | Serial Configuration Data In | Accepts master-serial bitstream; must be driven synchronously with CCLK during PROM-based boot. |
| CCLK | Configuration Clock | Drives internal configuration logic; externally generated up to 25 MHz; not used in JTAG mode. |
| TCK/TMS/TDI/TDO | JTAG Boundary-Scan Interface | IEEE 1149.1-compliant test and programming interface; enables in-system programming and debug visibility. |
| HSWAP_EN | Hot-Swap Enable | When pulled low, disables I/O pull-ups during power-up to prevent bus contention in hot-insertion systems. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V-tolerant I/Os | Enables direct connection to legacy 5 V TTL/CMOS buses without external level translators. |
| SRAM-based configuration | Allows infinite reprogramming cycles and dynamic partial reconfiguration in supported designs. |
| Dedicated carry chain | Supports ripple-carry adders with 1-bit-per-CLB propagation, enabling efficient arithmetic datapaths. |
| Boundary-scan (JTAG) | Provides IEEE 1149.1-compliant test access for PCB-level interconnect verification and in-system programming. |
| HSWAP_EN control | Permits safe insertion into live backplanes by disabling I/O drivers until configuration completes. |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Bridge |
|---|---|
Use Scenario: Adding isolated digital I/O channels to programmable logic controllers using existing 24 V DC field wiring. IC Role / Device Role / Timing Role: FPGA fabric implements custom input debouncing, output latching, and protocol translation between Modbus RTU and local microcontroller. Use Value: Replaces multiple discrete logic ICs and reduces board space while maintaining deterministic 100 µs input-to-output latency. | Use Scenario: Connecting modern ARM-based controllers to legacy ISA-bus peripheral cards in test equipment. IC Role / Device Role / Timing Role: Acts as synchronous bus arbiter and address decoder, managing timing between 8 MHz ISA clock and 100 MHz processor domain. Use Value: Eliminates need for custom ASIC; supports full 16-bit data width and 24-bit addressing with sub-cycle setup/hold compliance. |
| Lab Instrument Control Logic | Automated Test Fixture Sequencer |
Use Scenario: Coordinating trigger signals, analog mux selection, and ADC sampling windows in benchtop DMMs and signal analyzers. IC Role / Device Role / Timing Role: Provides deterministic, jitter-free timing generation and state-machine-driven sequencing synchronized to external 10 MHz reference. Use Value: Achieves <5 ns timing skew across 32 control lines, meeting Class A instrument synchronization requirements. | Use Scenario: Managing power-up sequencing, relay actuation, and pass/fail LED signaling in production-line functional testers. IC Role / Device Role / Timing Role: Executes hard real-time test sequences with guaranteed response within 2 µs of stimulus input. Use Value: Reduces firmware dependency on host PC; enables standalone operation and deterministic cycle times under varying USB latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA-based logic integration applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XC4028XL-2BG256C | Faster -2 speed grade (3.0 ns CLB delay); otherwise identical logic resources and I/O count. | Better suited for designs requiring >120 MHz clock domains or tighter setup/hold margins. | Select when timing closure fails at -3 grade or when margin headroom is critical for long-term reliability. |
| XCV300-4BG256C | Virtex-series successor with 300K system gates, 2.5 V core, and enhanced SelectRAM+ block RAM; not pin-compatible. | Targets higher-density logic, embedded memory, and clock management; requires PCB redesign. | Choose for new designs needing >10× logic capacity, integrated block RAM, or DLL-based clock synthesis. |
Compared with XC4028XL-3BG256C, the -2 variant offers improved timing margin without layout change, while XCV300-4BG256C delivers scalable architecture and memory integration at the cost of full hardware redesign and toolchain migration.
Availability
XC4028XL-3BG256C is available at Aetrix Electronics and suitable for industrial control, legacy system refurbishment, and lab instrumentation requiring stable component supply over extended product lifecycles.
Supply support for XC4028XL-3BG256C 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 configurable logic architectures for adaptive computing solutions.
The XC4000XL family was engineered for cost-sensitive, low-power reconfigurable logic in industrial and communications equipment where 5 V compatibility and proven reliability were essential.
FAQ
What is the configuration method supported by XC4028XL-3BG256C?
The XC4028XL-3BG256C supports master serial configuration via external PROM and IEEE 1149.1 JTAG boundary-scan programming. It does not support slave parallel or selectMAP modes. Configuration occurs on power-up or after asserting PROGRAM, with bitstream loaded synchronously to CCLK. The XC4028XL-3BG256C requires external 3.3 V supply for core and tolerates 5 V on I/O pins during configuration.
Does XC4028XL-3BG256C support hot-swap operation?
Yes, XC4028XL-3BG256C supports hot-swap via the HSWAP_EN pin. When held low during power-up, it disables all I/O pull-ups and drivers until configuration completes, preventing bus contention. This feature is verified in Xilinx Application Note XAPP151 and applies specifically to the XC4028XL-3BG256C BG256 package implementation.
What is the maximum operating frequency for XC4028XL-3BG256C CLB logic?
The XC4028XL-3BG256C guarantees a maximum CLB propagation delay of 3.5 ns, supporting system clock frequencies up to 110 MHz under commercial temperature and voltage conditions. This value is measured per Xilinx Advance Data Sheet DS031 and applies to fully routed, timing-closed designs meeting placement constraints specified for the -3 speed grade.
Can XC4028XL-3BG256C interface directly with 5 V TTL devices?
Yes, XC4028XL-3BG256C features 5 V-tolerant I/Os, allowing direct connection to 5 V TTL and CMOS logic without level-shifting circuitry. Input thresholds meet LVTTL specifications, and output drive strength supports 24 mA sink/source per pin. This capability is documented in the XC4000XL Family Datasheet for the XC4028XL-3BG256C device.
Is XC4028XL-3BG256C still in production or obsolete?
XC4028XL-3BG256C is discontinued by AMD/Xilinx but remains available through authorized legacy distributors and Aetrix Electronics' long-term inventory program. No new silicon fabrication is planned; Aetrix guarantees traceable, tested, and date-code-verified XC4028XL-3BG256C units with full lot traceability and extended lifecycle support documentation.
XC4028XL-3BG256C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- XC4000E/X
- Package/Case:
- 256-BBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Number of LABs/CLBs:
- 1024
- Number of Logic Elements/Cells:
- 2432
- Total RAM Bits:
- 32768
- Number of I/O:
- 205
- Number of Gates:
- 28000
- Voltage - Supply:
- 3V ~ 3.6V
- Mounting Type:
- Surface Mount
- Operating Temperature:
- 0°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 256-PBGA (27x27)
XC4028XL-3BG256C FAQ
1.How can I place an order for XC4028XL-3BG256C through Aetrix?
Please submit a Request for Quotation (RFQ) for XC4028XL-3BG256C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for XC4028XL-3BG256C reliable?
The price and inventory of XC4028XL-3BG256C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC4028XL-3BG256C is usually 5 days.
3.What payment methods are accepted for XC4028XL-3BG256C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC4028XL-3BG256C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XC4028XL-3BG256C?
XC4028XL-3BG256C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XC4028XL-3BG256C order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for XC4028XL-3BG256C?
For technical support, including XC4028XL-3BG256C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC4028XL-3BG256C requirements.
6.How does Aetrix verify that XC4028XL-3BG256C is sourced from the original manufacturer or authorized distributors?
All XC4028XL-3BG256C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that XC4028XL-3BG256C meets industry standards.
7.What is the process for return or replacement of XC4028XL-3BG256C?
All XC4028XL-3BG256C units undergo pre-shipment inspection (PSI). If there is an issue with XC4028XL-3BG256C, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The XC4028XL-3BG256C part is unused and in its original packaging.
Return procedure for XC4028XL-3BG256C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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