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AMD XCS40-3PQ208I
- Part No.:
- XCS40-3PQ208I
- Manufacturer:
- AMD
- Category:
- FPGAs (Field Programmable Gate Array)
- Package:
- 208-BFQFP
- Datasheet:
-
XCS40-3PQ208I.pdf
- Description:
- IC FPGA 169 I/O 208QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,645
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Product details
Overview
XCS40-3PQ208I from AMD (formerly Xilinx) is a Spartan-XL family FPGA with 40,000 system gates, 208-pin PQFP package, -3 speed grade, and industrial temperature range (–40°C to +85°C); used in legacy industrial control logic replacement and reconfigurable I/O interface design.
For engineers reviewing the XCS40-3PQ208I datasheet, pinout, applications, or equivalent options, key selection considerations include gate count, I/O count (176 user I/Os), speed grade timing compliance, and legacy PCB compatibility for drop-in replacement of aging PLDs.
Technical Context
The XCS40-3PQ208I implements configurable logic blocks (CLBs) with four-input LUTs and flip-flops, distributed RAM, and dedicated carry logic for arithmetic functions. It supports IEEE 1149.1 JTAG boundary-scan testing and in-system programmability via serial PROM or parallel programming mode.
Configuration is performed through a master serial or slave parallel mode using external PROM or microprocessor interface. The device requires a single 5.0 V supply and supports hot-swap compliant I/Os with 3.3 V or 5.0 V tolerant inputs depending on bank configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Gates | 40,000 system gates - defines maximum combinational logic capacity for logic synthesis mapping |
| Speed Grade | -3 - guarantees maximum clock frequency of 100 MHz for CLB-to-CLB paths under industrial conditions |
| User I/O Pins | 176 - supports high-density peripheral interfacing with configurable voltage standards per bank |
| Supply Voltage | 5.0 V ±5% - requires single-rail power delivery; no auxiliary voltage rails needed |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating |
| Configuration Mode | Master Serial / Slave Parallel - enables flexible boot options including PROM-based or processor-controlled init |
Pinout & Package
208-pin Plastic Quad Flat Pack (PQFP), 28 × 28 mm body, 0.5 mm lead pitch, JEDEC MO-137AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Multiple dedicated pins provide low-inductance return paths for core and I/O domains |
| VCC | Core power supply | 5.0 V supply for internal logic; decoupling required within 1 cm of each VCC pin |
| IOCLK | Input clock for I/O registers | Optional clock input for synchronizing input capture or output launch timing |
| PROGRAM* | Configuration reset | Active-low signal that clears configuration memory and initiates reconfiguration sequence |
| DIN | Serial configuration data | Primary serial data input during master serial configuration mode |
| TMS/TCK/TDI/TDO | JTAG boundary-scan interface | Enables IEEE 1149.1 test access, device ID readback, and debug visibility |
Key Features
| Feature | Design Value |
|---|---|
| Configurable CLBs | Each CLB contains two function generators and flip-flops, enabling efficient implementation of state machines and datapaths |
| Distributed RAM | Up to 256 bits per CLB usable as synchronous RAM or shift registers without consuming LUT resources |
| Hot-swap I/O | I/O pins tolerate 5.5 V before configuration and support live insertion in backplane applications |
| JTAG Boundary Scan | Full IEEE 1149.1 compliance allows board-level test coverage without physical probe access |
| Multi-voltage I/O Banks | Four independent I/O banks support mixed 3.3 V and 5.0 V signaling on same device |
Applications
| Industrial PLC Logic Replacement | Legacy Test Equipment Interface |
|---|---|
Use Scenario: Replacing obsolete bipolar PROMs and PALs in field-deployed programmable logic controllers with field-upgradable logic. IC Role / Device Role / Timing Role: Configurable logic fabric implementing ladder logic execution, timer/counter functions, and discrete I/O scanning. Use Value: Enables firmware-level logic updates without hardware redesign; supports 176 I/Os for modular rack expansion. | Use Scenario: Adapting aging automated test systems to interface with modern DUTs requiring custom protocol translation. IC Role / Device Role / Timing Role: Protocol bridge between GPIB/IEEE-488 controller and LVDS or TTL-based sensor interfaces. Use Value: Provides deterministic timing for stimulus-response cycles at up to 100 MHz clock rate with zero-latency I/O registers. |
| Avionics Maintenance Panel | Medical Imaging Signal Conditioning |
Use Scenario: Retrofitting cockpit maintenance panels with real-time status decoding and LED driver control logic. IC Role / Device Role / Timing Role: Glue logic for ARINC 429 receiver parsing, discrete switch debouncing, and multiplexed LED display driving. Use Value: Industrial temp rating ensures operation across aircraft cabin thermal profiles; hot-swap I/O prevents damage during panel servicing. | Use Scenario: Integrating analog front-end synchronization and digital pulse shaping in portable ultrasound units. IC Role / Device Role / Timing Role: Time-critical control of ADC sampling clocks, FIR filter coefficient loading, and SPI-based DAC configuration. Use Value: Distributed RAM enables on-chip coefficient storage; CLB carry chain optimizes real-time filtering latency. |
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 |
|---|---|---|---|
| XCS40-4PQ208I | Faster -4 speed grade (125 MHz CLB-to-CLB), identical pinout and logic resources | Suitable where timing closure fails with -3 grade; requires tighter trace length matching | Select when design requires margin for clock skew or higher throughput without layout change |
| XCS30-3PQ208I | Lower density (30,000 gates), same package and speed grade, reduced CLB count | Applicable for cost-sensitive designs with <150 kgate utilization and simpler control logic | Choose when gate count headroom is >25% and I/O count remains sufficient |
Compared with XCS40-3PQ208I, the XCS40-4PQ208I offers higher timing margin at identical footprint, while the XCS30-3PQ208I reduces cost and power at the expense of logic capacity-both require verification of place-and-route convergence and I/O bank voltage assignment.
Availability
XCS40-3PQ208I is available at Aetrix Electronics and suitable for industrial control retrofitting, legacy test equipment modernization, and avionics panel upgrades requiring stable component supply over extended production lifecycles.
Supply support for XCS40-3PQ208I 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; XCS40-3PQ208I was originally developed by Xilinx as part of its early Spartan FPGA family targeting cost-sensitive, high-volume logic replacement.
The Spartan-XL product line was engineered for pin-compatible migration from PAL/GAL/PLD devices into reprogrammable logic with industrial temperature support and simplified configuration architecture.
FAQ
What is the configuration method supported by XCS40-3PQ208I?
XCS40-3PQ208I supports Master Serial, Slave Parallel, and JTAG configuration modes. Master Serial uses an external PROM to load bitstream on power-up; Slave Parallel allows microprocessor-controlled programming; JTAG enables boundary-scan testing and in-circuit programming. All methods are fully documented in the Xilinx Spartan-XL Configuration User Guide.
Does XCS40-3PQ208I require external configuration memory?
Yes, XCS40-3PQ208I is SRAM-based and requires external nonvolatile memory (e.g., Xilinx XC18V02 or compatible serial PROM) to store the configuration bitstream. The device loads configuration automatically on power-up in Master Serial mode, eliminating need for host processor intervention during startup.
What I/O standards are supported by XCS40-3PQ208I?
XCS40-3PQ208I supports LVTTL, TTL, and PCI-compliant I/O standards across its four independently powered I/O banks. Input thresholds are fixed for 5.0 V operation; 3.3 V-tolerant inputs are enabled per bank via VCCO selection, but output drive strength remains 5.0 V compatible.
Is XCS40-3PQ208I RoHS compliant?
No, XCS40-3PQ208I is a legacy device manufactured prior to RoHS Directive enforcement and contains leaded solder in its PQFP package. It is exempt from RoHS under Annex III for industrial spare parts and obsolescence-mitigation applications per EU Commission Decision 2017/197.
Can XCS40-3PQ208I be reprogrammed in-system?
Yes, XCS40-3PQ208I supports in-system programming via JTAG or Slave Parallel mode. Reprogramming does not require device removal or power cycle; however, configuration memory must be reloaded after each power cycle since it is volatile SRAM-based logic.
XCS40-3PQ208I 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:
- 4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Operating Temperature:
- -40°C ~ 100°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 208-PQFP (28x28)
XCS40-3PQ208I FAQ
1.How can I place an order for XCS40-3PQ208I through Aetrix?
Please submit a Request for Quotation (RFQ) for XCS40-3PQ208I 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 XCS40-3PQ208I reliable?
The price and inventory of XCS40-3PQ208I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XCS40-3PQ208I is usually 5 days.
3.What payment methods are accepted for XCS40-3PQ208I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XCS40-3PQ208I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XCS40-3PQ208I?
XCS40-3PQ208I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XCS40-3PQ208I 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 XCS40-3PQ208I?
For technical support, including XCS40-3PQ208I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XCS40-3PQ208I requirements.
6.How does Aetrix verify that XCS40-3PQ208I is sourced from the original manufacturer or authorized distributors?
All XCS40-3PQ208I 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 XCS40-3PQ208I meets industry standards.
7.What is the process for return or replacement of XCS40-3PQ208I?
All XCS40-3PQ208I units undergo pre-shipment inspection (PSI). If there is an issue with XCS40-3PQ208I, 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 XCS40-3PQ208I part is unused and in its original packaging.
Return procedure for XCS40-3PQ208I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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