AMD XC17S50AVO8C

Overview

XC17S50AVO8C from AMD is a configuration PROM for Spartan-3 FPGAs, providing serial bitstream storage with 50 kbit capacity, 5 V supply voltage, and industrial temperature range (–40°C to +85°C); used in embedded control systems requiring reliable FPGA reconfiguration at power-up.

For engineers reviewing the XC17S50AVO8C datasheet, pinout, applications, or equivalent options, key selection factors include serial configuration interface compatibility, 5 V I/O tolerance, endurance rating, data retention lifetime, and VO8C package footprint alignment with Spartan-3 PCB layouts.

Technical Context

This PROM uses CMOS EEPROM technology to store FPGA configuration data and supports Master Serial mode, where the FPGA initiates read cycles via its PROG_B and CCLK signals. It features automatic power-on reset detection and built-in write-protection logic.

Timing is synchronized to the FPGA's CCLK edge; access time is 25 ns max, and the device requires no external clock or address decoding circuitry. Data integrity is maintained through on-chip CRC verification during readback.

Key Specifications

Pinout & Package

XC17S50AVO8C is housed in an 8-pin SOIC (VO8C) package with gull-wing leads, 150 mil width, and JEDEC MS-012AC outline.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA configuration PROM applications.

Compared with XCF01SVO20C and AT17LV512-10JU, XC17S50AVO8C uniquely supports 5 V Spartan-3 systems with minimal board space (VO8C), fixed 50 kbit sizing matched to XC3S50, and guaranteed industrial temperature operation without voltage scaling.

Availability

XC17S50AVO8C is available at Aetrix Electronics and suitable for industrial control, avionics ground support, and medical imaging subsystems requiring stable component supply and long-term lifecycle assurance.

Supply support for XC17S50AVO8C 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 (formerly Xilinx) designs programmable logic devices and configuration solutions for high-reliability embedded and industrial applications.

The XC17SxxA PROM family targets Spartan-3 FPGA configuration with 5 V compatibility, industrial temperature grading, and serial interface simplicity for cost-sensitive, long-lifecycle systems.

FAQ

What is the primary function of the XC17S50AVO8C in an FPGA-based system?

The XC17S50AVO8C serves as a dedicated serial configuration PROM for Spartan-3 FPGAs, storing and delivering the complete bitstream at power-up. It operates in Master Serial mode, synchronizing to the FPGA's CCLK signal. The XC17S50AVO8C eliminates need for external controllers or microprocessors during configuration, enabling autonomous, repeatable FPGA initialization in industrial and embedded applications.

Does the XC17S50AVO8C support in-system programming via JTAG?

No, the XC17S50AVO8C does not support JTAG-based in-system programming. It uses a dedicated serial interface (DI/DO/CE/WE) controlled by the FPGA during configuration. Programming requires an external programmer compatible with AMD/Xilinx PROM file formats (.bit or .mcs). The XC17S50AVO8C relies on hardware write protection and CE-driven timing rather than JTAG instruction sets.

Can the XC17S50AVO8C be used with Spartan-3E or Spartan-6 FPGAs?

No, the XC17S50AVO8C is specifically designed for Spartan-3 FPGAs and is not compatible with Spartan-3E or Spartan-6 families. These later families require different configuration protocols, voltage levels, and bitstream formats. Using XC17S50AVO8C with Spartan-3E or Spartan-6 will result in failed configuration. The XC17S50AVO8C matches the timing, voltage, and command set of Spartan-3 devices only.

What is the significance of the "VO8C" suffix in XC17S50AVO8C?

The "VO8C" suffix denotes the package type: an 8-pin Very Small Outline IC (VO) with gull-wing leads, 150 mil body width, and JEDEC MS-012AC mechanical outline. This compact surface-mount package enables high-density PCB layouts while maintaining compatibility with standard SOIC assembly processes. The XC17S50AVO8C's VO8C footprint is optimized for Spartan-3 reference designs and industrial control boards.

How does the XC17S50AVO8C ensure configuration data integrity?

The XC17S50AVO8C performs on-chip CRC verification of the stored bitstream before releasing data to the FPGA. During power-up, after address initialization, the device computes a checksum over the entire 50 kbit array and compares it to a stored CRC value. If mismatch occurs, the XC17S50AVO8C halts output and asserts error signaling via timing violation, preventing corrupted FPGA configuration. This built-in check is active each boot cycle.