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AMD XCS40XL-4PQ208C
- Part No.:
- XCS40XL-4PQ208C
- Manufacturer:
- AMD
- Category:
- FPGAs (Field Programmable Gate Array)
- Package:
- 208-BFQFP
- Datasheet:
-
XCS40XL-4PQ208C.pdf
- Description:
- IC FPGA 169 I/O 208QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,489
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Product details
Overview
XCS40XL-4PQ208C from AMD (formerly Xilinx) is a Spartan-XL family FPGA with 40,000 system gates, 208-pin PQFP package, -4 speed grade, and commercial temperature range (0°C to 70°C). It integrates configurable logic blocks, I/O banks supporting 3.3V LVTTL/LVCMOS, and dedicated global clock routing for embedded control and interface bridging in industrial PLCs.
For engineers reviewing the XCS40XL-4PQ208C datasheet, pinout, applications, or equivalent options, key selection factors include gate count, I/O voltage support, clock resource architecture, timing closure capability at -4 speed grade, and legacy 208-pin PQFP footprint compatibility.
Technical Context
The XCS40XL-4PQ208C implements a segmented interconnect architecture with four dedicated global clock lines and hierarchical routing resources. It supports up to 160 user I/O pins with programmable slew rate and drive strength per bank.
Configuration is performed via serial PROM or parallel slave mode using IEEE 1149.1 JTAG boundary-scan test access. The device lacks on-chip configuration memory and requires external configuration PROM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Gates | 40,000 system gates - defines maximum combinational logic capacity for state-machine or glue-logic implementation |
| Speed Grade | -4 - guarantees maximum clock frequency of 125 MHz for internal logic paths under commercial conditions |
| Package | PQFP-208 - 28×28 mm body, 0.5 mm pitch, through-hole compatible footprint for legacy PCB reuse |
| I/O Standards | LVTTL/LVCMOS 3.3V - supports direct interfacing with microcontrollers and peripheral ICs without level translation |
| Temperature Range | 0°C to 70°C - validated for commercial-grade operation only; not rated for extended or industrial temperature use |
| Configuration Mode | Serial PROM or Parallel Slave - requires external nonvolatile memory; no internal configuration storage |
Pinout & Package
PQFP-208 package with 208 leads, 28 mm × 28 mm body size, 0.5 mm lead pitch, and exposed thermal pad (non-electrical). Pin 1 marked by corner notch; pin numbering clockwise from top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GCK0–GCK3 | Global Clock Input | Dedicated low-skew clock inputs routed to all CLBs; essential for synchronous design timing integrity |
| PROGRAM* | Configuration Initiate | Active-low signal that resets configuration logic and clears SRAM cells prior to reconfiguration |
| DIN | Serial Data In | Primary serial configuration data input when using master serial or PROM-based startup |
| INIT* | Configuration Status | Open-drain output indicating configuration memory checksum failure or incomplete loading |
| TCK/TMS/TDI/TDO | JTAG Boundary-Scan | IEEE 1149.1 compliant test access port for programming, debugging, and board-level verification |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Logic Blocks (CLBs) | Provide 4-input LUTs and flip-flops per CLB for implementing sequential and combinatorial logic with predictable timing |
| Four Global Clock Lines | Enable low-jitter, low-skew clock distribution across full die area without routing congestion penalties |
| Programmable I/O Drive Strength | Supports 4 mA, 8 mA, or 16 mA output drive per pin to match trace impedance and reduce EMI in mixed-signal boards |
| JTAG Boundary-Scan Support | Allows in-system programming and IEEE 1149.1-compliant structural testing without physical probe access |
Applications
| Industrial PLC I/O Module | Legacy System Interface Bridge |
|---|---|
Use Scenario: Replacing obsolete ASICs in programmable logic controller backplanes requiring field-upgradable I/O mapping. IC Role / Device Role / Timing Role: Configurable glue logic and protocol translator between CPU bus and isolated digital I/O channels. Use Value: Enables firmware-driven I/O reconfiguration without hardware redesign; leverages existing 208-pin PQFP layout. | Use Scenario: Bridging mismatched buses between legacy 16-bit microcontrollers and modern peripherals in medical equipment upgrades. IC Role / Device Role / Timing Role: Synchronous bus translator with programmable wait-state insertion and address decoding. Use Value: Maintains timing compliance across disparate clock domains while preserving mechanical footprint of original design. |
| Test Equipment Pattern Generator | Communications Protocol Emulator |
Use Scenario: Generating deterministic digital stimulus waveforms for semiconductor ATE systems with fixed timing constraints. IC Role / Device Role / Timing Role: High-speed pattern sequencer with deterministic setup/hold margins enforced by -4 speed grade timing model. Use Value: Delivers sub-8 ns clock-to-output delay stability required for production wafer-level test correlation. | Use Scenario: Emulating proprietary serial protocols in avionics maintenance tools where firmware updates are infrequent. IC Role / Device Role / Timing Role: Bit-level protocol engine with programmable baud rate generation and CRC-16 calculation offload. Use Value: Reduces host MCU firmware complexity and eliminates need for external protocol ASICs in certified tooling. |
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 |
|---|---|---|---|
| XCS30XL-4PQ208C | 30,000 system gates, identical PQFP-208 package and -4 speed grade | Lower gate count limits complex state machines or wide datapaths | Select when design fits within 30K gates to reduce cost and power; same PCB layout |
| XCS50XL-4PQ208C | 50,000 system gates, same PQFP-208 package and -4 speed grade | Higher gate density enables larger control logic or additional peripheral interfaces | Select when future expansion headroom or increased functionality is required; same footprint |
Compared with XCS30XL-4PQ208C and XCS50XL-4PQ208C, the XCS40XL-4PQ208C provides optimal balance of logic capacity, timing margin, and legacy board compatibility for mid-complexity industrial control upgrades.
Availability
XCS40XL-4PQ208C is available at Aetrix Electronics and suitable for industrial PLCs, legacy test equipment, medical device interface modules, and avionics maintenance tools requiring stable component supply and long-term obsolescence management.
Supply support for XCS40XL-4PQ208C 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 acquired Xilinx in 2022 and maintains legacy Spartan-XL product support for industrial and aerospace customers requiring long-lifecycle components.
The Spartan-XL family was designed for cost-sensitive, high-reliability applications where programmable logic replaces discrete TTL or ASICs in mature systems with fixed form factors.
FAQ
What is the maximum operating frequency supported by the XCS40XL-4PQ208C?
The XCS40XL-4PQ208C is rated at speed grade -4, guaranteeing a maximum internal clock frequency of 125 MHz under commercial temperature and voltage conditions. This value is derived from worst-case timing analysis across all CLB paths and I/O registers, and assumes proper PCB layout and decoupling. Actual system-level performance depends on design topology and place-and-route results.
Does the XCS40XL-4PQ208C include on-chip configuration memory?
No, the XCS40XL-4PQ208C does not contain embedded configuration memory. It requires an external serial PROM or parallel EPROM to store and load the bitstream at power-up. Configuration occurs via master serial, slave serial, or slave parallel modes, all initiated by the PROGRAM* pin.
Can the XCS40XL-4PQ208C operate in industrial temperature ranges?
No, the XCS40XL-4PQ208C is specified only for commercial temperature range (0°C to 70°C). It lacks qualification and characterization for extended or industrial temperature operation. For designs requiring –40°C to +85°C, alternative Spartan-II or later families must be evaluated.
What JTAG standards does the XCS40XL-4PQ208C support?
The XCS40XL-4PQ208C fully complies with IEEE 1149.1 (JTAG) for boundary-scan testing and in-system programming. Its TCK/TMS/TDI/TDO pins support standard JTAG instruction register access, data register scan, and configuration loading without requiring additional adapters or voltage translators.
Is the XCS40XL-4PQ208C pin-compatible with other Spartan-XL devices in PQFP-208 package?
Yes, all Spartan-XL devices in the PQFP-208 package-including XCS30XL-4PQ208C, XCS40XL-4PQ208C, and XCS50XL-4PQ208C-share identical pinouts and electrical characteristics. This allows direct substitution within the same speed grade without PCB modification.
XCS40XL-4PQ208C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- Spartan®-XL
- Package/Case:
- 208-BFQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Number of LABs/CLBs:
- 784
- Number of Logic Elements/Cells:
- 1862
- Total RAM Bits:
- 25088
- Number of I/O:
- 169
- Number of Gates:
- 40000
- Voltage - Supply:
- 3V ~ 3.6V
- Mounting Type:
- Surface Mount
- Operating Temperature:
- 0°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 208-PQFP (28x28)
XCS40XL-4PQ208C FAQ
1.How can I place an order for XCS40XL-4PQ208C through Aetrix?
Please submit a Request for Quotation (RFQ) for XCS40XL-4PQ208C 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 XCS40XL-4PQ208C reliable?
The price and inventory of XCS40XL-4PQ208C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XCS40XL-4PQ208C is usually 5 days.
3.What payment methods are accepted for XCS40XL-4PQ208C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XCS40XL-4PQ208C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XCS40XL-4PQ208C?
XCS40XL-4PQ208C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XCS40XL-4PQ208C 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 XCS40XL-4PQ208C?
For technical support, including XCS40XL-4PQ208C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XCS40XL-4PQ208C requirements.
6.How does Aetrix verify that XCS40XL-4PQ208C is sourced from the original manufacturer or authorized distributors?
All XCS40XL-4PQ208C 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 XCS40XL-4PQ208C meets industry standards.
7.What is the process for return or replacement of XCS40XL-4PQ208C?
All XCS40XL-4PQ208C units undergo pre-shipment inspection (PSI). If there is an issue with XCS40XL-4PQ208C, 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 XCS40XL-4PQ208C part is unused and in its original packaging.
Return procedure for XCS40XL-4PQ208C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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