Microchip Technology AT17F080-30BJI

Overview

AT17F080-30BJI from Atmel is an 8-Mbit in-system programmable serial configuration PROM designed to store FPGA bitstreams for SRAM-based FPGAs including Xilinx Virtex®, Spartan®, XC4000™, and Altera FLEX® devices. It delivers 33 MHz serial download speed, supports 5V-tolerant I/O pins, operates at 3.3V ±10%, and features cascading capability via CEO/CE daisy-chain for multi-FPGA systems.

For engineers reviewing the AT17F080-30BJI datasheet, AT17F080-30BJI pinout, AT17F080-30BJI application, or AT17F080-30BJI equivalent, this device serves as a nonvolatile configuration memory with page-select support, ISP via 2-wire bus, low-power standby mode (<1 mA), and compatibility across major FPGA families requiring reliable, pin-defined serial boot loading.

Technical Context

The AT17F080-30BJI implements a serial-access flash memory architecture with integrated control logic for FPGA master serial configuration. Its address counter, page decode (PAGESEL[1:0] + PAGE_EN), and CEO-driven daisy-chain enable deterministic bitstream delivery without external controllers.

It supports dual operational modes: SER_EN = High for FPGA configuration (33 MHz max CLK), and SER_EN = Low for 2-wire ISP programming. Input pins RESET/OE serve dual reset/output-enable functions, while CE controls data output enable and counter activation-critical for synchronized multi-device cascading.

Key Specifications

Pinout & Package

AT17F080-30BJI is packaged in a 44-lead PLCC (44J), measuring 17.4 mm × 17.4 mm × 3.9 mm, with 1.27 mm lead pitch and JEDEC MS-018 AC compliance. Pin 1 identifier is marked by a corner chamfer and dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC18V08, AT17F080-30BJI offers broader FPGA vendor compatibility and flexible page-select reconfiguration; compared with AT17F080-30TQI, it trades board area for easier PLCC rework and legacy socket compatibility - both share identical electrical behavior and ISP capability.

Availability

AT17F080-30BJI is available at Aetrix Electronics and suitable for industrial PLC control systems, telecom baseband processing units, aerospace avionics data acquisition, and medical imaging FPGA accelerators requiring stable component supply across extended lifecycle programs.

Supply support for AT17F080-30BJI 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 semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and programmable logic solutions for industrial, automotive, and communications markets.

The AT17F Series was designed specifically to provide cost-effective, in-system programmable configuration memory for SRAM-based FPGAs - addressing the need for reliable, vendor-agnostic bitstream storage with field-upgrade capability.

FAQ

What is the primary function of the AT17F080-30BJI in an FPGA-based system?

The AT17F080-30BJI serves as a serial configuration PROM that stores and delivers FPGA bitstreams during power-up or on-demand reconfiguration. It interfaces directly with SRAM-based FPGAs (e.g., Xilinx Virtex®, Altera FLEX®) using the master serial mode, eliminating the need for external controllers. Its 8-Mbit capacity supports high-density logic configurations, and its CEO pin enables daisy-chained multi-device setups - all critical for robust, scalable FPGA deployment in AT17F080-30BJI-based systems.

Does the AT17F080-30BJI support in-system programming, and how is it enabled?

Yes, the AT17F080-30BJI supports in-system programming (ISP) via a 2-wire serial interface. ISP is activated by driving the SER_EN pin Low, which places the device into programming mode. In this mode, A2 acts as a chip-select input, and DATA/CLK form the bidirectional programming bus. The AT17F080-30BJI performs internal charge-pump voltage generation - no external programming voltage is required. This capability allows field updates without removing the AT17F080-30BJI from the PCB.

How does the page-select feature (PAGE_EN and PAGESEL[1:0]) work in the AT17F080-30BJI?

The AT17F080-30BJI divides its 8-Mbit memory into four 2-Mbit pages when PAGE_EN is driven High. PAGESEL[1:0] selects one of the four pages (00–11), allowing independent storage and retrieval of distinct FPGA configurations. When PAGE_EN is Low, the full 8-Mbit space is used as a single linear array. This feature enables rapid reconfiguration - for example, switching between functional modes in telecom equipment - without modifying hardware or reloading the entire AT17F080-30BJI memory.

What is the role of the READY pin on the AT17F080-30BJI, and how should it be used?

The READY pin is an open-collector output that is actively driven Low during the AT17F080-30BJI's power-on reset period (typically <100 ms) and released (high-impedance) upon completion. It provides hardware-confirmed readiness for downstream logic - e.g., releasing FPGA reset or enabling clocks only after AT17F080-30BJI initialization is complete. A 4.7 kΩ pull-up resistor is recommended to ensure clean logic-high signaling when READY is released.

Is the AT17F080-30BJI compatible with both commercial and industrial temperature ranges?

The AT17F080-30BJI is rated for the industrial temperature range of –40°C to +85°C, as indicated by the "I" suffix in its ordering code. It meets all specified DC and AC characteristics across this range, including standby current ≤1 mA, VIH ≥2.0 V, and tOE ≤55 ns. This makes the AT17F080-30BJI suitable for harsh-environment applications such as factory automation, outdoor telecom gear, and transportation systems - unlike commercial-grade variants (e.g., AT17F080-30CC) limited to 0°C–70°C.