XILINX XC17S20VC

Mfr. Part

XC17S20VC

Manufacturer

AMD Xilinx

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Detailed Description

XC17S20VC is a Xilinx serial configuration PROM used to store and load FPGA configuration bitstreams. It provides non-volatile storage so your Xilinx FPGA can power up and configure itself reliably every time. It is a compact 8‑pin surface-mount device designed for simple, robust Master Serial configuration of many Xilinx families. Typical use is with Spartan and Virtex generations that require a dedicated serial PROM.

Key Features

Non-volatile serial PROM for FPGA configuration

Approximate density class 2 Mbit (sized for mid-range legacy Xilinx bitstreams)

3.3 V supply operation (typical for this family)

Simple serial interface with CCLK, DIN, DOUT, CS

Supports daisy-chaining multiple PROMs for larger designs via CEO

Long data retention, high endurance typical of serial PROM technology

Low standby current for power-sensitive systems

Supports Master Serial configuration mode used by Xilinx FPGAs

Compact 8-pin SMD footprint for tight layouts

Backward compatibility with many older Xilinx FPGA families

Key Advantages

Easy, deterministic FPGA boot with no complex firmware needed

Proven, robust configuration path trusted in industrial and telecom equipment

Small footprint and low component count reduce BOM cost and space

Daisy-chain capability scales storage for larger bitstreams

Non-volatile memory ensures reliable power-on configuration even after long field life

Straightforward hardware hookup speeds design and simplifies manufacturing

Packaging

Type: SMD-8 (SOIC-8 style, gull-wing leads)

Material: Molded epoxy package with copper leadframe; Pb-free and SnPb variants may exist by date code

Size: Typical SOIC-8 body about 4.9 mm x 3.9 mm x ~1.75 mm; lead pitch 1.27 mm (confirm exact outline in datasheet)

Pin configuration (typical for Xilinx serial PROMs):

- VCC: 3.3 V power

- GND: Ground

- CCLK: Configuration clock input

- DIN: Serial data input

- DOUT: Serial data output to FPGA

- CS: Chip select

- RESET/OE: Reset or output enable

- CEO: Cascade enable out (for chaining PROMs)

Thermal characteristics (typical for SOIC-8; verify in datasheet):

- Theta JA around 120–180 °C/W depending on PCB and airflow

- Operating temperature range depends on suffix; “C” typically indicates commercial 0 to +70 °C

Electrical properties (family-typical; confirm in datasheet):

- VCC nominal 3.3 V, typical operating range ~3.0–3.6 V

- Low standby current (tens of microamps typical)

- Serial clock rate up to tens of MHz (commonly 20–33 MHz range)

- CMOS/TTL compatible I/O levels

Lifecycle

Status: Mature legacy device; many XC17Sxx parts have transitioned to NRND or Obsolete with recommended migration to Platform Flash families or standard SPI flash where supported. Availability can be limited; Y-IC currently lists quantity 2800 for XC17S20VC.

Recommended equivalent or alternative models (match capacity and FPGA compatibility):

- Xilinx XCF02S Platform Flash Serial (approx. 2 Mbit) – direct modern replacement for many designs

- Xilinx XCF04S, XCF08S – higher capacities if your bitstream is larger

- For FPGAs that support standard SPI flash: Winbond W25Q16/W25Q32, Micron N25Q or MT25Q series, Microchip/Atmel AT25/AT26 series (verify your FPGA family’s configuration mode and voltage requirements)

- Microchip/Atmel AT17F/AT17LV configuration memories – used in some legacy FPGA designs (check compatibility)

If you need a drop-in equivalent for XC17S20VC or help choosing the right migration path, please contact our sales team via the Y-IC website for detailed guidance and availability.

Key Application Areas

Boot and configuration storage for Xilinx Spartan and Virtex FPGAs using Master Serial mode

Multi-PROM chained configurations for large designs

Industrial control and automation requiring reliable power-up behavior

Telecom infrastructure and networking gear with stable, repeatable FPGA startup

Embedded systems, test equipment, medical, and instrumentation using reconfigurable logic

Legacy product maintenance and service where original configuration flow must be preserved

Datasheet

Y-IC hosts the most authoritative, up-to-date datasheet and technical resources for XC17S20VC. We strongly recommend downloading the datasheet from this page to confirm pinout, electrical limits, timing, and mechanical outline before final design.

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