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AMD XCS40-4PQ208C
- Part No.:
- XCS40-4PQ208C
- Manufacturer:
- AMD
- Category:
- FPGAs (Field Programmable Gate Array)
- Package:
- 208-BFQFP
- Datasheet:
-
XCS40-4PQ208C.pdf
- Description:
- IC FPGA 169 I/O 208QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,308
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Product details
Overview
XCS40-4PQ208C from AMD (formerly Xilinx) is a Spartan-XL family FPGA with 4,000 usable gates, 112 I/O pins, and 128 configurable logic blocks (CLBs), designed for low-cost, high-volume embedded control and interface bridging applications.
For engineers reviewing the XCS40-4PQ208C datasheet, pinout, applications, or equivalent options, key selection factors include its 5V-tolerant I/Os, 10 ns CLB propagation delay, PQ208 package footprint, and support for in-system programmability via JTAG boundary-scan.
Technical Context
The XCS40-4PQ208C implements a hierarchical architecture with CLBs containing two 3-input LUTs and flip-flops, interconnect matrix routing, and dedicated global clock and reset networks. It supports synchronous design with setup/hold times of 3.5 ns / 1.5 ns at 5V operation.
Configuration is performed via serial mode using an external PROM or parallel mode through the CPU data bus. The device includes IEEE 1149.1-compliant JTAG TAP controller for boundary-scan testing and programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gates | 4,000 usable system gates - defines logic capacity for combinational and sequential functions |
| I/O Pins | 112 user-programmable I/Os - supports multi-bus interfacing and peripheral expansion |
| CLBs | 128 configurable logic blocks - each contains dual 3-LUTs + flip-flop for registered logic |
| Propagation Delay | 10 ns CLB delay - enables reliable operation up to ~66 MHz system clock frequency |
| Voltage | 5.0 V ±10% core and I/O supply - compatible with legacy TTL/CMOS systems |
| Configuration | Serial or parallel mode - allows flexible boot methods including PROM-based or microprocessor-controlled |
Pinout & Package
PQ208 is a 208-pin plastic quad flat pack (PQFP) with 0.5 mm lead pitch, 28 × 28 mm body size, and standard JEDEC MO-137AC footprint. Thermal pad not present; lead finish is matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GCK1, GCK2 | Global Clock Inputs | Dedicated low-skew paths to all CLBs - essential for synchronous timing integrity |
| PROGRAM | Configuration Initiate | Active-low signal that clears configuration memory and resets internal state |
| DIN | Serial Data Input | Accepts configuration bitstream during serial mode programming |
| TMS, TDI, TDO, TCK | JTAG Boundary-Scan Interface | Enables IEEE 1149.1 test access and in-system programming without external hardware |
| I/O[0]–I/O[111] | Bi-directional User I/O | 5V-tolerant, configurable as input, output, or bidirectional with slew-rate control |
Key Features
| Feature | Design Value |
|---|---|
| In-System Programmability | Enables field firmware updates and design iteration without socket removal or UV erasure |
| IEEE 1149.1 JTAG Support | Provides standardized test access, configuration loading, and boundary-scan diagnostics |
| 5V-Tolerant I/Os | Interoperates directly with legacy 5V TTL/CMOS peripherals without level-shifting circuitry |
| Dedicated Global Clock Nets | Reduces clock skew across large designs, improving timing closure for high-speed synchronous logic |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Bridge |
|---|---|
Use Scenario: Adding digital I/O capability to programmable logic controllers using existing 5V backplane infrastructure. IC Role / Device Role / Timing Role: FPGA logic fabric implements custom I/O mapping, debounce, and protocol translation between CPU and field devices. Use Value: Eliminates need for discrete glue logic and supports reconfigurable I/O timing to match varying sensor/actuator response profiles. | Use Scenario: Bridging ISA or VME bus peripherals to modern microcontroller subsystems in test equipment. IC Role / Device Role / Timing Role: Acts as address/data demultiplexer and handshake controller with programmable wait-state generation. Use Value: Enables direct 5V bus compatibility and real-time latency control for deterministic peripheral access. |
| Automotive Diagnostic Tool Logic | Medical Instrument Control Module |
Use Scenario: Implementing OBD-II protocol parsing and CAN message filtering in handheld diagnostic scanners. IC Role / Device Role / Timing Role: Configurable state machine processes serial command streams and routes responses to display or communication interfaces. Use Value: Supports rapid protocol updates via reprogramming and maintains deterministic response timing under variable power conditions. | Use Scenario: Managing front-panel controls, LED indicators, and sensor interface sequencing in portable ultrasound units. IC Role / Device Role / Timing Role: Synchronizes button scan, display update, and analog front-end trigger signals with precise timing alignment. Use Value: Reduces BOM count by replacing multiple discrete timers and latches while ensuring EMI-robust 5V I/O drive. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA-based interface and control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCS40-5PQ208C | Same architecture but 5 ns CLB delay (vs. 10 ns); higher speed grade | Required for designs needing >66 MHz clock domains or tighter setup/hold margins | Select when timing closure fails at target frequency with XCS40-4PQ208C |
| XCS30-4PQ208C | Fewer CLBs (96 vs. 128) and lower gate count (3,000 vs. 4,000) | Suitable for simpler control logic where I/O count remains identical but logic depth is reduced | Choose to reduce cost where full XCS40-4PQ208C capacity is unused |
Compared with XCS40-5PQ208C and XCS30-4PQ208C, the XCS40-4PQ208C balances speed, density, and cost for mid-complexity 5V embedded control-offering verified timing margin for 66 MHz operation without over-specifying performance or gate count.
Availability
XCS40-4PQ208C is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, and medical device manufacturing requiring stable component supply and long-term obsolescence management.
Supply support for XCS40-4PQ208C 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 now develops and supports the Spartan FPGA product line originally introduced for cost-sensitive, high-volume applications.
The Spartan-XL family-including the XCS40-4PQ208C-was engineered for 5V system integration, offering predictable timing, JTAG configurability, and robust I/O drive in legacy industrial and automotive environments.
FAQ
What is the maximum operating frequency supported by the XCS40-4PQ208C?
The XCS40-4PQ208C has a typical CLB propagation delay of 10 ns, enabling reliable synchronous operation up to approximately 66 MHz in well-constrained designs. Actual maximum frequency depends on logic depth, routing congestion, and I/O timing constraints-not guaranteed beyond this value without full static timing analysis of the implemented design.
Does the XCS40-4PQ208C support in-system programming?
Yes, the XCS40-4PQ208C supports in-system programming via its IEEE 1149.1 JTAG interface. This allows configuration bitstream loading and boundary-scan testing without removing the device from the PCB, making it suitable for field-upgradable embedded systems.
Is the XCS40-4PQ208C pin-compatible with other Spartan-XL devices in the PQ208 package?
Yes, all Spartan-XL devices in the PQ208 package-including XCS30-4PQ208C, XCS40-4PQ208C, and XCS40-5PQ208C-share identical pinouts and I/O assignments. This enables drop-in replacement within the same speed grade and simplifies migration across density options.
What voltage levels are supported on the I/O pins of the XCS40-4PQ208C?
The XCS40-4PQ208C features 5V-tolerant I/O pins, allowing direct connection to 5V TTL and CMOS logic without external level shifters. Its core logic operates at 5.0 V ±10%, and all I/Os are specified for 5V operation with programmable slew-rate control.
Can the XCS40-4PQ208C be configured using a microprocessor interface?
Yes, the XCS40-4PQ208C supports parallel configuration mode, enabling direct connection to an 8-bit or 16-bit microprocessor data bus. In this mode, the CPU writes the configuration bitstream to the FPGA's configuration registers using standard memory-mapped I/O addressing.
XCS40-4PQ208C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- Spartan®
- 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:
- 4.75V ~ 5.25V
- Mounting Type:
- Surface Mount
- Operating Temperature:
- 0°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 208-PQFP (28x28)
XCS40-4PQ208C FAQ
1.How can I place an order for XCS40-4PQ208C through Aetrix?
Please submit a Request for Quotation (RFQ) for XCS40-4PQ208C 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 XCS40-4PQ208C reliable?
The price and inventory of XCS40-4PQ208C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XCS40-4PQ208C is usually 5 days.
3.What payment methods are accepted for XCS40-4PQ208C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XCS40-4PQ208C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XCS40-4PQ208C?
XCS40-4PQ208C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XCS40-4PQ208C 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 XCS40-4PQ208C?
For technical support, including XCS40-4PQ208C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XCS40-4PQ208C requirements.
6.How does Aetrix verify that XCS40-4PQ208C is sourced from the original manufacturer or authorized distributors?
All XCS40-4PQ208C 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 XCS40-4PQ208C meets industry standards.
7.What is the process for return or replacement of XCS40-4PQ208C?
All XCS40-4PQ208C units undergo pre-shipment inspection (PSI). If there is an issue with XCS40-4PQ208C, 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 XCS40-4PQ208C part is unused and in its original packaging.
Return procedure for XCS40-4PQ208C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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