AMD XC17128ELPD8I

Overview

XC17128ELPD8I from AMD is a 128 Kb serial configuration PROM designed for Xilinx FPGA initialization, featuring 5 V operation, 10 MHz max clock frequency, industrial temperature range (−40°C to +85°C), and 8-pin PDIP package. It stores bitstream data to configure Spartan and Virtex family FPGAs at power-up.

For engineers reviewing the XC17128ELPD8I datasheet, pinout, applications, or equivalent options, key selection factors include voltage compatibility with legacy 5 V FPGA configuration interfaces, PDIP through-hole mounting for prototyping and legacy PCBs, and guaranteed read timing at 10 MHz for reliable boot sequencing.

Technical Context

This PROM uses CMOS EEPROM technology with serial SPI-compatible interface (though not fully SPI-standard compliant), supporting single-byte and page-read operations. It implements a dedicated FPGA configuration protocol with CS#-controlled address auto-increment and synchronous data output aligned to SCLK falling edge.

Internal architecture includes a 128 Kb (16 K × 8) memory array organized as 2048 pages of 8 bytes each, with built-in write-cycle control and 100-year data retention at 25°C. Programming requires 5 V VCC and external high-voltage pulse on VPP pin during write/erase cycles.

Key Specifications

Pinout & Package

8-pin plastic dual in-line package (PDIP), 0.3 inch body width, 0.1 inch pin pitch, through-hole mounting.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XCF01SVO20C and AT17LV010-10PU, the XC17128ELPD8I provides guaranteed 5 V operation and proven timing compliance with Xilinx's pre-Spartan-3 configuration controllers - making it the only viable option for maintaining legacy 5 V FPGA systems without board-level changes.

Availability

XC17128ELPD8I is available at Aetrix Electronics and suitable for automated test equipment, FPGA prototyping platforms, and legacy industrial control panels requiring stable component supply and long-term obsolescence management.

Supply support for XC17128ELPD8I 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 oversees legacy Xilinx configuration PROM product lines, including the XC17xxx family.

The XC17xxx series was originally developed by Xilinx to provide standardized, vendor-matched configuration memory for its FPGA families - ensuring timing, voltage, and protocol alignment from power-on through bitstream loading.

FAQ

Is XC17128ELPD8I compatible with Xilinx Spartan-II FPGAs?

Yes, XC17128ELPD8I is explicitly qualified for Spartan-II FPGA configuration per Xilinx DS029 datasheet. Its 128 Kb capacity matches the maximum bitstream size of Spartan-II devices, and its 5 V/10 MHz timing aligns with the Spartan-II configuration controller's requirements.

Can XC17128ELPD8I be programmed in-system?

Yes, XC17128ELPD8I supports in-system programming via its VPP pin, which accepts a 12.75 V pulse during write/erase cycles. This requires external circuitry to generate the high-voltage pulse while keeping VCC at 5 V - commonly implemented using a charge-pump IC or microcontroller-driven transistor switch.

What is the minimum VCC required for reliable read operation of XC17128ELPD8I?

The minimum VCC for reliable read operation of XC17128ELPD8I is 4.5 V (5 V ±10%). Operation below this threshold may cause read failures or metastability on DOUT, especially at maximum clock frequency. The device does not support 3.3 V read mode.

Does XC17128ELPD8I require an external clock source during FPGA configuration?

No, XC17128ELPD8I does not require an external clock. It operates synchronously with the FPGA's configuration clock (CCLK), which is generated by the FPGA itself during power-up. The PROM's DOUT is edge-aligned to CCLK falling edge per Xilinx configuration protocol.

Is XC17128ELPD8I RoHS compliant?

XC17128ELPD8I is not RoHS compliant. It contains lead in the 8-pin PDIP package (6/6 SnPb finish) and was manufactured prior to Xilinx's RoHS transition. For RoHS-compliant alternatives, consider the XCFxx series in lead-free packages - though these require system voltage and timing reassessment.