Microchip Technology AT17N010-10SI

Overview

AT17N010-10SI from Atmel is a 1-Mbit (1,048,576 × 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 current (100 µA industrial), and 20-year data retention at 85°C.

For engineers reviewing the AT17N010-10SI datasheet, AT17N010-10SI pinout, AT17N010-10SI application, or AT17N010-10SI equivalent, this device serves as a drop-in replacement for legacy Xilinx-compatible configuration PROMs in industrial-grade FPGA boot systems requiring reliable nonvolatile serial configuration storage with verified timing compliance to CCLK-driven master serial protocols.

Technical Context

The AT17N010-10SI implements a synchronous serial interface where the FPGA's CCLK directly clocks the EEPROM's internal address counter and bit shift register. Configuration data flows unidirectionally from DATA output to FPGA DIN, with RESET/OE and CE jointly controlling output enable and counter reset-RESET/OE active-low resets counters and tri-states DATA, while CE active-low enables clocked read access.

It supports two operational modes: standard FPGA configuration mode (SER_EN = VCC) and Two-Wire Serial In-System Programming mode (SER_EN = Low). In configuration mode, SER_EN must be tied high; in ISP mode, internal charge pumps generate programming voltages without external super-Vcc, enabling field reprogramming via dedicated two-wire bus.

Key Specifications

Pinout & Package

AT17N010-10SI is packaged in a 20-lead SOIC (JEDEC 20S2) with 0.300" body width, 1.27 mm lead pitch, and gull-wing leads. Thermal resistance θJA = - °C/W (not specified for this variant per datasheet Table 10), and package outline conforms to 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 AT17N010-10SI, AT17LV010-10CU offers higher endurance and broader VCC range but requires board-level SER_EN signal reassessment, while XC17S100A provides identical form-fit-function for immutable configurations but eliminates field update capability entirely.

Availability

AT17N010-10SI is available at Aetrix Electronics and suitable for industrial automation, FPGA-based motor control, and legacy Xilinx system sustainment requiring stable component supply across extended product lifecycles.

Supply support for AT17N010-10SI 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 was a U.S.-based semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and FPGA configuration solutions before its acquisition by Microchip Technology in 2016.

The AT17N series was designed specifically to replace Xilinx XC17Sxxx OTP PROMs in Spartan-family FPGA systems, delivering EEPROM-based reprogrammability while maintaining strict pin and timing compatibility for seamless drop-in upgrades.

FAQ

What is the primary function of the AT17N010-10SI in an FPGA system?

The AT17N010-10SI serves as a serial configuration EEPROM that stores and delivers the bitstream required to initialize Xilinx Spartan-II, Spartan-IIE, and Spartan XL FPGAs in Master Serial mode. It receives clocking from the FPGA's CCLK pin and outputs configuration data on the DATA line, enabling autonomous, power-on boot without external controllers. Its 1-Mbit capacity matches the configuration requirements of mid-range Spartan devices, and it operates reliably across industrial temperature ranges.

Is the AT17N010-10SI pin-compatible with Xilinx XC17Sxxx PROMs?

Yes, the AT17N010-10SI is explicitly designed to be pin-compatible with Xilinx XC17SXXXA and XC17SXXXXL PROMs, as confirmed in the official Atmel datasheet section "Pin Compatible with Xilinx® XC17SXXXA and XC17SXXXXL PROMs." This compatibility extends to identical pin assignments, DC electrical characteristics, and AC timing parameters-including TOE, TCE, and TCAC-enabling direct replacement in existing PCB layouts without modification.

Does the AT17N010-10SI support in-system programming (ISP)?

Yes, the AT17N010-10SI supports Two-Wire Serial In-System Programming via the SER_EN pin. When SER_EN is pulled low, the device enters ISP mode and accepts programming commands over the DATA line using an industry-standard two-wire protocol. Internal charge pumps generate required programming voltages, eliminating the need for external high-voltage supplies. This capability allows field updates without removing the device from the board.

What is the maximum clock frequency supported by the AT17N010-10SI in industrial operation?

The AT17N010-10SI supports a maximum clock frequency of 15 MHz under industrial conditions (-40°C to +85°C), as specified in the AC Characteristics table (FMAX row). This timing is validated for reliable data output with TCAC = 55 ns (CLK to Data Delay), ensuring setup/hold margins are met when interfaced with Spartan-II FPGAs operating at their maximum CCLK rates.

How does the AT17N010-10SI handle power-down and low-power operation?

The AT17N010-10SI enters low-power standby mode when the CE pin is held high, reducing supply current to ≤100 µA at 85°C. During standby, the internal address counter is disabled and the DATA pin is tri-stated, minimizing system-level power consumption. Power-up behavior is fully automatic-the address counter resets on VCC ramp, ensuring deterministic boot sequencing without external reset circuitry.