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AMD XCS20XL-4TQG144C
- Part No.:
- XCS20XL-4TQG144C
- Manufacturer:
- AMD
- Category:
- FPGAs (Field Programmable Gate Array)
- Package:
- 144-LQFP
- Datasheet:
-
XCS20XL-4TQG144C.pdf
- Description:
- IC FPGA 113 I/O 144TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,652
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Product details
Overview
XCS20XL-4TQG144C from AMD (formerly Xilinx) is a Spartan-XL family FPGA with 20,000 system gates, 144-pin TQFP package, -4 speed grade, and commercial temperature range (0°C to 70°C). It integrates configurable logic blocks, I/O banks supporting 3.3V and 5V tolerant inputs, and dedicated global clock routing for synchronous digital systems in industrial control and communications interfaces.
For engineers reviewing the XCS20XL-4TQG144C datasheet, pinout, applications, or equivalent options, key selection criteria include logic capacity, I/O voltage compatibility, clock resource count, timing closure capability at -4 speed grade, and legacy design support for re-spinning older PCBs.
Technical Context
The XCS20XL-4TQG144C implements a fine-grained architecture with Configurable Logic Blocks (CLBs), input/output blocks (IOBs), and programmable interconnect. It supports IEEE 1149.1 JTAG boundary-scan testing and uses SRAM-based configuration memory loaded via serial or parallel mode.
It features eight global clock buffers, dual-edge clocking per CLB, and I/O banks configurable for LVTTL, LVCMOS, and PCI-compliant signaling. Configuration is volatile and requires external PROM or processor initialization on power-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Capacity | 20,000 system gates - defines maximum combinational logic density for gate-equivalent synthesis targeting. |
| Package | 144-pin TQFP (20×20 mm, 0.5 mm pitch) - surface-mount footprint compatible with standard reflow profiles and manual rework. |
| Speed Grade | -4 - guarantees maximum clock frequency of 125 MHz for internal CLB paths under worst-case commercial conditions. |
| I/O Standards | LVTTL/LVCMOS 3.3V & 5V-tolerant - enables direct interface to legacy 5V peripherals without level shifters. |
| Configuration Mode | Serial or parallel PROM loading - determines boot time, security options, and external memory requirements. |
| Temperature Range | 0°C to +70°C - validated operation for commercial-grade embedded control and test equipment environments. |
Pinout & Package
144-pin Thin Quad Flat Package (TQFP), 20 mm × 20 mm body, 0.5 mm lead pitch, exposed pad not present. Pinout conforms to Xilinx Spartan-XL family standard layout with dedicated clock inputs (CLKA, CLKC), global reset (GSR), and dual-purpose configuration pins (INIT, PROGRAM).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKA, CLKC | Global Clock Inputs | Drive dedicated low-skew clock networks feeding all CLBs and IOBs simultaneously. |
| GSR | Global Set/Reset | Asynchronously resets all flip-flops across the device in one cycle during initialization. |
| INIT | Configuration Status | Active-low open-drain output indicating successful configuration or detecting CRC error. |
| PROGRAM | Configuration Initiate | Active-low input that clears configuration memory and restarts loading sequence. |
| IO_0–IO_115 | Configurable I/O Banks | Support bidirectional data flow with programmable slew rate, pull-up, and drive strength per bank. |
Key Features
| Feature | Design Value |
|---|---|
| IEEE 1149.1 JTAG Boundary-Scan | Enables in-circuit testability and programming without requiring dedicated test pads or bed-of-nails fixtures. |
| Dual-Edge Flip-Flop Support | Allows single CLB to implement two independent register stages per clock cycle, improving throughput in data-path designs. |
| Volatile SRAM Configuration | Permits dynamic reconfiguration and field updates but mandates external non-volatile storage for power-on initialization. |
| 5V-Tolerant I/O Pins | Eliminates need for external level translators when interfacing with legacy 5V microcontrollers or peripheral ICs. |
Applications
| Industrial PLC I/O Module | Legacy Test Equipment Interface |
|---|---|
Use Scenario: Replacing obsolete gate arrays in programmable logic controllers handling discrete sensor inputs and relay outputs. IC Role / Device Role / Timing Role: FPGA implementing custom state machines and glue logic between microcontroller bus and opto-isolated I/O channels. Use Value: Enables drop-in replacement of aging ASICs using existing PCB layout while supporting firmware-upgradable logic behavior. | Use Scenario: Adapting vintage automated test systems to modern PC-based control via USB-to-parallel bridge. IC Role / Device Role / Timing Role: FPGA acting as protocol translator and timing generator for GPIB or IEEE-488 handshaking signals. Use Value: Provides precise setup/hold timing control and signal buffering compliant with IEEE-488.1 electrical specifications. |
| Communications Backplane Controller | Medical Imaging Data Formatter |
Use Scenario: Managing slot-level arbitration and status reporting in modular telecom chassis with hot-swap capability. IC Role / Device Role / Timing Role: FPGA serving as backplane manager with JTAG daisy-chain support and real-time fault monitoring logic. Use Value: Delivers deterministic response to insertion/removal events using dedicated global clock resources and fast I/O toggle rates. | Use Scenario: Converting raw ADC streams from ultrasound transducer arrays into packetized frame buffers for DMA transfer. IC Role / Device Role / Timing Role: FPGA performing pixel alignment, line buffering, and parallel-to-serial serialization before sending to host interface. Use Value: Achieves sub-cycle timing accuracy for pixel clock domains using dedicated clock routing and low-jitter I/O registers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA-based logic replacement applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCS20-4TQ144C | No 5V-tolerant I/O; lower drive strength; identical logic capacity and pinout. | Requires external level shifters for 5V peripheral interfaces; unsuitable for mixed-voltage backplanes. | Select only if design operates exclusively at 3.3V and cost sensitivity outweighs I/O flexibility. |
| XCS30XL-4TQ144C | 30,000-gate capacity; same package, speed grade, and I/O voltage support. | Provides headroom for future feature expansion or higher gate-count IP integration without board change. | Choose when additional logic resources are needed for added functionality or design margin. |
Compared with XCS20XL-4TQG144C, XCS20-4TQ144C lacks 5V tolerance and reduces system-level interface simplicity, while XCS30XL-4TQ144C offers scalable logic density within identical mechanical and electrical constraints-making it viable for forward-compatible upgrades.
Availability
XCS20XL-4TQG144C is available at Aetrix Electronics and suitable for industrial control, test equipment retrofit, and medical imaging subsystems requiring stable component supply and long-term obsolescence management.
Supply support for XCS20XL-4TQG144C 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
AMD is a global semiconductor leader delivering adaptive computing solutions, including FPGAs, ACAPs, and AI accelerators for data center, edge, and embedded applications.
The Spartan-XL family was designed for cost-sensitive, high-volume applications requiring reliable logic replacement, legacy interface bridging, and long-lifecycle support in industrial and instrumentation markets.
FAQ
What is the configuration method supported by XCS20XL-4TQG144C?
XCS20XL-4TQG144C supports both serial and parallel configuration modes using external PROM or microprocessor-controlled loading. Serial mode uses fewer pins and is typical for space-constrained designs, while parallel mode enables faster startup. The device does not include on-chip non-volatile configuration memory, so external storage is mandatory for each power cycle.
Does XCS20XL-4TQG144C support JTAG boundary-scan testing?
Yes, XCS20XL-4TQG144C fully complies with IEEE 1149.1 JTAG boundary-scan standards. This allows for board-level interconnect testing, in-system programming, and debug access without requiring physical probe points. The JTAG TAP controller is integrated and accessible via dedicated TDI, TDO, TMS, and TCK pins on the device.
What is the maximum operating frequency of XCS20XL-4TQG144C?
The XCS20XL-4TQG144C is rated for a maximum internal clock frequency of 125 MHz under worst-case commercial conditions (0°C to +70°C, VCC = 3.3V ± 5%). This speed grade (-4) applies to CLB-to-CLB paths; actual system performance depends on placement, routing, and I/O timing constraints verified during static timing analysis.
Can XCS20XL-4TQG144C interface directly with 5V logic devices?
Yes, XCS20XL-4TQG144C features 5V-tolerant I/O pins across all banks, allowing safe connection to 5V TTL and CMOS outputs without external level-shifting circuitry. Input thresholds remain compatible with LVTTL specifications, and drive strength is configurable per bank to match loading requirements.
Is XCS20XL-4TQG144C still in production or subject to obsolescence?
XCS20XL-4TQG144C is a mature Spartan-XL device no longer in active production by AMD/Xilinx. However, Aetrix Electronics maintains verified inventory and offers extended lifecycle sourcing, including traceable surplus stock and controlled-distribution channels to support legacy system maintenance and repair programs.
XCS20XL-4TQG144C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- Spartan®-XL
- Package/Case:
- 144-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Number of LABs/CLBs:
- 400
- Number of Logic Elements/Cells:
- 950
- Total RAM Bits:
- 12800
- Number of I/O:
- 113
- Number of Gates:
- 20000
- Voltage - Supply:
- 3V ~ 3.6V
- Mounting Type:
- Surface Mount
- Operating Temperature:
- 0°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 144-TQFP (20x20)
XCS20XL-4TQG144C FAQ
1.How can I place an order for XCS20XL-4TQG144C through Aetrix?
Please submit a Request for Quotation (RFQ) for XCS20XL-4TQG144C 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 XCS20XL-4TQG144C reliable?
The price and inventory of XCS20XL-4TQG144C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XCS20XL-4TQG144C is usually 5 days.
3.What payment methods are accepted for XCS20XL-4TQG144C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XCS20XL-4TQG144C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XCS20XL-4TQG144C?
XCS20XL-4TQG144C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XCS20XL-4TQG144C 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 XCS20XL-4TQG144C?
For technical support, including XCS20XL-4TQG144C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XCS20XL-4TQG144C requirements.
6.How does Aetrix verify that XCS20XL-4TQG144C is sourced from the original manufacturer or authorized distributors?
All XCS20XL-4TQG144C 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 XCS20XL-4TQG144C meets industry standards.
7.What is the process for return or replacement of XCS20XL-4TQG144C?
All XCS20XL-4TQG144C units undergo pre-shipment inspection (PSI). If there is an issue with XCS20XL-4TQG144C, 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 XCS20XL-4TQG144C part is unused and in its original packaging.
Return procedure for XCS20XL-4TQG144C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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