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AMD XC3S50-4VQ100C
- Part No.:
- XC3S50-4VQ100C
- Manufacturer:
- AMD
- Category:
- FPGAs (Field Programmable Gate Array)
- Package:
- 100-TQFP
- Datasheet:
-
XC3S50-4VQ100C.pdf
- Description:
- IC FPGA 63 I/O 100VQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,460
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Product details
Overview
XC3S50-4VQ100C from AMD (formerly Xilinx) is a Spartan-3 FPGA with 50,000 system gates, 176 logic cells, 128 KB of total block RAM, and configured in a 100-pin VQFP package with 63 user I/Os. It operates at -4 speed grade (tPD = 4.6 ns) and supports 3.3 V/2.5 V I/O standards for embedded control and interface bridging applications.
For engineers reviewing the XC3S50-4VQ100C datasheet, pinout, applications, or equivalent options, key selection factors include logic density, I/O count, block RAM capacity, speed grade timing, and VQFP thermal/mechanical compatibility in space-constrained industrial PCBs.
Technical Context
The XC3S50-4VQ100C implements a hierarchical FPGA architecture with configurable logic blocks (CLBs), distributed RAM, and dedicated multipliers. It supports SelectIO™ technology for single-ended and differential signaling including LVCMOS, LVTTL, and SSTL.
Configuration is performed via master serial mode using an external PROM or through JTAG boundary-scan. The device includes Digital Clock Managers (DCMs) for clock synthesis, phase shifting, and duty-cycle correction - critical for synchronous digital subsystems requiring precise timing alignment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Cells | 176 CLBs - provides baseline programmable logic for glue logic replacement and small-state-machine implementation |
| System Gates | 50,000 - indicates approximate ASIC-equivalent gate count for logic complexity estimation |
| Block RAM | 128 KB - enables local data buffering, FIFOs, and small lookup tables without external memory |
| User I/O Pins | 63 - supports moderate peripheral interfacing (e.g., SPI, parallel bus, GPIO expansion) |
| Speed Grade | -4 (tPD = 4.6 ns) - defines maximum combinational path delay for timing closure in synchronous designs |
| I/O Standards | LVCMOS, LVTTL, SSTL - ensures interoperability with common microcontrollers, memories, and sensors |
| Package | VQ100 (100-pin VQFP, 0.5 mm pitch) - surface-mount, thermally adequate for industrial ambient up to 85°C |
Pinout & Package
VQ100 is a 100-pin Very Thin Quad Flat Pack with 0.5 mm lead pitch, body size 14 × 14 mm, and exposed pad for thermal dissipation. Designed for reflow soldering and manual inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Multiple dedicated pins provide low-impedance return paths for I/O and core logic |
| VCCO_0 | I/O bank power | Supplies 3.3 V or 2.5 V to Bank 0 I/Os - must match connected peripheral voltage |
| VCCINT | Core logic power | 1.2 V supply for internal FPGA fabric - requires tight regulation and local decoupling |
| PROGRAM_B | Configuration reset | Active-low input that initiates configuration reload from external PROM or JTAG |
| DONE | Configuration status | Open-drain output indicating successful bitstream loading and initialization completion |
Key Features
| Feature | Design Value |
|---|---|
| Digital Clock Manager (DCM) | Provides jitter-reduced clock synthesis, 90° phase shift, and frequency multiplication/division without external PLL components |
| SelectIO™ Technology | Enables mixed-voltage I/O banks - allows interfacing with 3.3 V, 2.5 V, and 1.8 V peripherals on same device |
| Embedded Multipliers | Two 18 × 18-bit signed multipliers support basic DSP functions like filtering and scaling in control loops |
| Configurable Logic Blocks | Each CLB contains four 3-input LUTs and eight flip-flops - balances density and routing flexibility for compact designs |
| Boundary-Scan (JTAG) | IEEE 1149.1-compliant test access port enables in-circuit programming and board-level diagnostics |
Applications
| Industrial Motor Control | Legacy Interface Bridging |
|---|---|
Use Scenario: Real-time PWM generation and encoder feedback processing in servo drives. IC Role / Device Role / Timing Role: FPGA acts as deterministic I/O co-processor, synchronizing ADC sampling, PWM update, and safety monitoring within fixed-cycle deadlines. Use Value: XC3S50-4VQ100C delivers sufficient logic and DCM-controlled timing precision to meet <1 µs jitter requirements for closed-loop motion control. | Use Scenario: Translating parallel ISA or PCI bus signals to modern microcontroller interfaces. IC Role / Device Role / Timing Role: Protocol translator implementing handshaking, address decoding, and data width conversion between legacy and embedded SoC domains. Use Value: XC3S50-4VQ100C provides 63 user I/Os and flexible SelectIO™ standards to match diverse voltage levels across aging and new subsystems. |
| Test Equipment Front-End | Medical Sensor Hub |
Use Scenario: Signal conditioning and trigger arbitration in benchtop oscilloscopes and logic analyzers. IC Role / Device Role / Timing Role: FPGA handles high-speed digital capture, pattern matching, and real-time trigger assertion before data transfer to host processor. Use Value: XC3S50-4VQ100C's -4 speed grade and 128 KB block RAM enable 16-bit parallel acquisition at 50 MHz with on-chip buffering. | Use Scenario: Aggregating analog sensor inputs (ECG, SpO₂, temperature) and managing isolated UART/SPI communication to host MCU. IC Role / Device Role / Timing Role: Low-power interface hub performing signal synchronization, oversampling, and protocol translation under strict EMC constraints. Use Value: XC3S50-4VQ100C supports 2.5 V I/O and offers DCM-based clock domain crossing - critical for noise-immune medical data acquisition. |
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 |
|---|---|---|---|
| XC3S100-4VQ100C | Higher logic density (256 CLBs, 100K gates), same package and speed grade | Supports larger state machines and more complex peripheral integration | Choose when additional logic resources or block RAM are required without changing PCB layout |
| XC3S50-4TQ144C | Same logic resources and speed grade, but in 144-pin TQFP (0.8 mm pitch) | Offers 102 user I/Os and improved thermal performance due to larger footprint | Prefer for higher I/O count or better power dissipation in extended-temperature environments |
Compared with XC3S50-4VQ100C, XC3S100-4VQ100C increases gate count without altering pinout, while XC3S50-4TQ144C retains identical functionality but expands I/O and thermal margin - both require separate layout evaluation despite functional overlap.
Availability
XC3S50-4VQ100C is available at Aetrix Electronics and suitable for industrial motor control, legacy interface bridging, and medical sensor hub applications requiring stable component supply across long-lifecycle production programs.
Supply support for XC3S50-4VQ100C 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 continues development and support of the Spartan family for cost-sensitive, high-volume embedded applications.
The Spartan-3 series was designed for non-volatile, low-power programmable logic in industrial automation, test equipment, and communications infrastructure where predictable timing and I/O flexibility are essential.
FAQ
What is the maximum operating temperature for XC3S50-4VQ100C?
The XC3S50-4VQ100C is rated for commercial operation from 0°C to +85°C ambient. Its VQ100 package includes thermal characteristics validated for sustained operation at full logic utilization within this range, provided PCB copper area and airflow meet Xilinx Application Note XAPP453 guidelines. XC3S50-4VQ100C does not support industrial (-40°C to +100°C) or extended temperature grades.
Does XC3S50-4VQ100C support JTAG programming?
Yes, XC3S50-4VQ100C fully supports IEEE 1149.1 JTAG boundary-scan for in-system programming, debugging, and verification. The TDI, TDO, TMS, TCK, and TRTST pins are dedicated and electrically compatible with standard JTAG adapters. XC3S50-4VQ100C requires no external configuration PROM when programmed exclusively via JTAG.
Can XC3S50-4VQ100C generate clocks internally without external oscillators?
XC3S50-4VQ100C includes two Digital Clock Managers (DCMs) that accept an external clock input and generate multiple phase-aligned, frequency-multiplied, or duty-cycle-corrected outputs. It cannot synthesize clocks from DC or random noise - a stable external reference (e.g., crystal oscillator) is mandatory for DCM operation. XC3S50-4VQ100C has no internal RC oscillator.
What I/O standards are supported by XC3S50-4VQ100C?
XC3S50-4VQ100C supports LVCMOS (1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V), LVTTL, and SSTL18/SSTL2 I/O standards per bank. Each of its four I/O banks can be independently powered (VCCO), enabling mixed-voltage operation. XC3S50-4VQ100C does not support HSTL, GTL, or differential standards like LVDS or RSDS.
Is XC3S50-4VQ100C RoHS compliant?
Yes, XC3S50-4VQ100C is RoHS-6 compliant (lead-free, mercury-free, cadmium-free, hexavalent chromium-free, PBB-free, PBDE-free) and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements. The VQ100 package uses matte tin finish on leads and conforms to IPC/JEDEC J-STD-020D reflow profiles. XC3S50-4VQ100C documentation confirms compliance per Xilinx DS099 v2.5.
XC3S50-4VQ100C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- Spartan®-3
- Package/Case:
- 100-TQFP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Number of LABs/CLBs:
- 192
- Number of Logic Elements/Cells:
- 1728
- Total RAM Bits:
- 73728
- Number of I/O:
- 63
- Number of Gates:
- 50000
- Voltage - Supply:
- 1.14V ~ 1.26V
- Mounting Type:
- Surface Mount
- Operating Temperature:
- 0°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 100-VQFP (14x14)
XC3S50-4VQ100C FAQ
1.How can I place an order for XC3S50-4VQ100C through Aetrix?
Please submit a Request for Quotation (RFQ) for XC3S50-4VQ100C 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 XC3S50-4VQ100C reliable?
The price and inventory of XC3S50-4VQ100C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC3S50-4VQ100C is usually 5 days.
3.What payment methods are accepted for XC3S50-4VQ100C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC3S50-4VQ100C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XC3S50-4VQ100C?
XC3S50-4VQ100C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XC3S50-4VQ100C 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 XC3S50-4VQ100C?
For technical support, including XC3S50-4VQ100C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC3S50-4VQ100C requirements.
6.How does Aetrix verify that XC3S50-4VQ100C is sourced from the original manufacturer or authorized distributors?
All XC3S50-4VQ100C 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 XC3S50-4VQ100C meets industry standards.
7.What is the process for return or replacement of XC3S50-4VQ100C?
All XC3S50-4VQ100C units undergo pre-shipment inspection (PSI). If there is an issue with XC3S50-4VQ100C, 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 XC3S50-4VQ100C part is unused and in its original packaging.
Return procedure for XC3S50-4VQ100C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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