AMD XC1701PC20I

Overview

XC1701PC20I from AMD is a serial configuration PROM designed to store and load configuration bitstreams for Xilinx FPGA devices, featuring 1 Mbit capacity, 5 V supply voltage, and industrial temperature range (–40°C to +85°C), used in reconfigurable logic systems for telecom infrastructure.

For engineers reviewing the XC1701PC20I datasheet, pinout, applications, or equivalent options, key selection factors include voltage compatibility with legacy 5 V FPGA families, read access time of 20 ns, and support for master serial configuration mode.

Technical Context

This PROM operates in master serial mode to deliver configuration data to Xilinx FPGAs such as XC4000 and Spartan series. It uses CMOS technology, supports standard JEDEC-compliant programming, and interfaces directly via dedicated CONFIG_IN/CONFIG_OUT pins without external logic.

Timing is synchronized to an internal oscillator during power-up; no external clock is required. The device includes built-in power-on reset circuitry and automatic address incrementing during serial read operations.

Key Specifications

Pinout & Package

XC1701PC20I is housed in a 20-pin dual in-line package (DIP) with 0.3-inch body width, suitable for socketed or through-hole assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC1701PC20I, XCF01SVO20C offers modern packaging but mandates voltage conversion, while AT17LV010-10JU adds JTAG flexibility at the cost of increased system complexity and loss of self-boot capability.

Availability

XC1701PC20I is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and avionics test equipment requiring stable component supply and long-term obsolescence management.

Supply support for XC1701PC20I 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 manages legacy Xilinx configuration PROM product lines including the XC1700 family.

The XC1700 series was originally developed by Xilinx to provide reliable, single-chip configuration solutions for its early FPGA families, targeting systems where simplicity, determinism, and 5 V compatibility were essential.

FAQ

What is the primary function of the XC1701PC20I in FPGA-based systems?

The XC1701PC20I serves as a serial configuration PROM that stores and delivers bitstream data to initialize Xilinx FPGAs such as the XC4000 and Spartan families. It operates in master serial mode, generating its own configuration clock and driving FPGA inputs autonomously. The XC1701PC20I eliminates the need for external controllers during boot, ensuring deterministic startup in industrial and telecom applications.

Does the XC1701PC20I support 3.3 V operation?

No, the XC1701PC20I is specified exclusively for 5.0 V ±10% operation and is not compatible with 3.3 V systems. Its I/O and internal logic are designed for 5 V TTL levels, and applying 3.3 V may result in unreliable configuration or damage. For 3.3 V FPGA platforms, alternatives such as the XCF01SVO20C should be evaluated instead of the XC1701PC20I.

Can the XC1701PC20I be reprogrammed in-circuit?

No, the XC1701PC20I is a one-time programmable (OTP) PROM and cannot be erased or reprogrammed after initial programming. It requires external PROM programmers compliant with JEDEC standards, such as those from Data I/O or BP Microsystems. Reprogramming necessitates removal from the PCB and use of dedicated hardware - the XC1701PC20I does not support in-system programming or JTAG-based updates.

What FPGA families are officially supported by the XC1701PC20I?

The XC1701PC20I is documented by Xilinx to support the XC4000, XC4000E, XC4000XL, and Spartan series FPGAs in master serial configuration mode. It is not validated for Virtex, Spartan-3, or later families. Compatibility depends on matching configuration protocol timing and voltage levels - the XC1701PC20I remains appropriate only for legacy 5 V FPGA designs.

Is the XC1701PC20I still in active production?

The XC1701PC20I is discontinued by AMD (formerly Xilinx) and classified as a mature/legacy product. Aetrix Electronics maintains inventory of original-traceable stock and provides extended lifecycle support, including obsolescence monitoring and cross-reference assistance. Customers designing new systems should verify long-term availability commitments before committing to the XC1701PC20I.