Microchip Technology AT17N002-10SI

Overview

AT17N002-10SI from Atmel is a 2-Mbit (2,097,152 × 1-bit) serial EEPROM FPGA configuration memory operating at 3.3V ±10%, designed for Master Serial mode loading of Xilinx Spartan-II, Spartan-IIE, and Spartan XL FPGAs. It features pin compatibility with XC17SXXXA/L PROMs, low-power standby mode (150 µA industrial), and 20-year data retention at 85°C.

For engineers reviewing the AT17N002-10SI datasheet, AT17N002-10SI pinout, AT17N002-10SI application, or AT17N002-10SI equivalent, this device serves as a drop-in replacement for legacy Xilinx-compatible configuration PROMs in industrial-grade FPGA boot systems requiring reliable nonvolatile storage, simple serial interface, and proven field reliability.

Technical Context

The AT17N002-10SI implements a serial-access EEPROM architecture optimized for FPGA configuration bitstream delivery. Its control logic directly interfaces with FPGA CCLK, DIN, and mode pins-no external controller required-and supports both standard Master Serial loading and Two-Wire ISP programming via SER_EN.

It uses a tri-state DATA output synchronized to CLK, with RESET/OE and CE jointly managing address counter enablement and output driver state. Standby current scales with density: 150 µA max at 3.3V/85°C, reflecting its CMOS EEPROM process and industrial thermal design.

Key Specifications

Pinout & Package

AT17N002-10SI is packaged in a 20-lead SOIC (JEDEC 20S2) with 0.300" body width, 1.27 mm lead pitch, and exposed die pad not connected. Pin 1 identifier is a beveled corner; package meets JEDEC MS-012, Variation AA.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT17N002-10SI, AT17LV002-10SI offers tighter power efficiency while maintaining pin and functional equivalence, whereas XC17S200A-PC44C provides OTP security at the cost of reprogrammability and package incompatibility.

Availability

AT17N002-10SI is available at Aetrix Electronics and suitable for industrial PLCs, motor control systems, automated test equipment, and optical inspection platforms requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AT17N002-10SI 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

Atmel Corporation (now part of Microchip Technology) is a fabless semiconductor company specializing in nonvolatile memory, microcontrollers, and FPGA configuration solutions for industrial and embedded markets.

The AT17N series was designed specifically to replace Xilinx XC17S PROMs in Spartan-family FPGA configurations, delivering EEPROM reprogrammability, industrial temperature support, and seamless Master Serial integration without external logic.

FAQ

What is the primary function of the AT17N002-10SI in an FPGA-based system?

The AT17N002-10SI serves as a dedicated serial configuration EEPROM that stores and delivers the bitstream to initialize Xilinx Spartan-II, Spartan-IIE, and Spartan XL FPGAs in Master Serial mode. It eliminates the need for external controllers by synchronizing directly with the FPGA's CCLK signal and driving the DIN pin. The AT17N002-10SI ensures reliable, repeatable FPGA boot-up after power-on or reset, leveraging its 2-Mbit capacity and industrial-grade reliability.

Does the AT17N002-10SI support in-system programming (ISP)?

Yes, the AT17N002-10SI supports Two-Wire Serial ISP programming via the SER_EN pin. When SER_EN is pulled low, the device enters ISP mode and accepts programming commands over the DATA and CLK pins using standard I²C-like protocol. This allows field reprogramming without removing the AT17N002-10SI from the PCB, enabling firmware updates and configuration revisions in deployed systems.

What is the maximum clock frequency supported by the AT17N002-10SI in industrial temperature range?

The AT17N002-10SI supports a maximum clock frequency of 10 MHz across its full industrial operating range (-40°C to +85°C). This specification is guaranteed in the AC Characteristics table and defines the upper limit for configuration speed when interfacing with Spartan-II/IIE/XL FPGAs in Master Serial mode. Exceeding 10 MHz may result in timing violations and failed bitstream loading.

How does the AT17N002-10SI manage power consumption during inactive periods?

The AT17N002-10SI enters low-power standby mode when the CE pin is held high, drawing ≤150 µA at 3.3V and 85°C. This feature reduces system-level quiescent power without disabling the device-configuration remains intact and resumes instantly upon CE assertion. The AT17N002-10SI's standby current is density-scaled, making it suitable for thermally constrained industrial enclosures where heat dissipation is critical.

Is the AT17N002-10SI pin-compatible with older Xilinx PROMs?

Yes, the AT17N002-10SI is explicitly pin-compatible with Xilinx XC17SXXXA and XC17SXXXXL PROMs in its 20-lead SOIC package variant. This compatibility extends to signal mapping, timing behavior, and electrical characteristics, allowing direct replacement in existing Spartan-based designs without PCB modification. The AT17N002-10SI maintains identical pin functions-including RESET/OE, CE, CLK, and DATA-ensuring seamless integration.