Microchip Technology AT17F080A-30JU

Overview

AT17F080A-30JU from Microchip Technology (formerly Atmel) is an 8-Mbit FPGA configuration PROM in a 20-lead PLCC package, supporting serial download at up to 33 MHz, 5.0V-tolerant I/O pins, and in-system programmability via 2-wire bus. It stores full bitstreams for Altera Stratix/Cyclone and Xilinx-compatible SRAM FPGAs in industrial temperature range (-40°C to +85°C).

For engineers reviewing the AT17F080A-30JU datasheet, AT17F080A-30JU pinout, AT17F080A-30JU application, or AT17F080A-30JU equivalent, key selection criteria include cascading capability via nCASC, page-selectable memory partitioning, 3.3V operation with 5V-tolerant inputs, standby current ≤3 mA, and compatibility with ATDH2225 ISP cable and third-party programmers.

Technical Context

The AT17F080A-30JU implements a serial flash-based configuration memory architecture with dedicated control logic for FPGA master serial mode. Its block diagram integrates Flash memory array, serial download logic, 2-wire programming interface, and power-on reset circuitry - all optimized for deterministic bitstream delivery without external controller intervention.

It supports four-page memory partitioning (via PAGE_EN and PAGESEL[1:0]), enabling storage of up to four independent FPGA configurations. Cascading is handled through nCASC output driving nCS of the next device, with automatic DATA tri-state upon completion to prevent bus contention.

Key Specifications

Pinout & Package

AT17F080A-30JU is packaged in a 20-lead Plastic J-Leaded Chip Carrier (PLCC), JEDEC MS-018 compliant, with 1.27 mm pitch and 9.78 mm × 9.78 mm body size. Pin 1 identifier is marked by a corner chamfer.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC18V08PC44C, AT17F080A-30JU offers native 5V-tolerant I/O and hardware-accelerated paging/cascading, reducing FPGA resource usage and system complexity. Against AT17F080A-30CU, it provides identical functionality in a through-hole-compatible PLCC package for prototyping, repair, and legacy manufacturing.

Availability

AT17F080A-30JU is available at Aetrix Electronics and suitable for industrial automation, communications infrastructure, and test equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.

Supply support for AT17F080A-30JU 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

Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel FPGA configuration products including the AT17FxxxA family.

The AT17FxxxA product line was designed specifically to provide cost-effective, in-system programmable serial configuration memory for SRAM-based FPGAs from Altera, Xilinx, and Atmel - emphasizing simplicity, reliability, and industrial temperature operation.

FAQ

What is the maximum serial configuration clock frequency supported by the AT17F080A-30JU?

The AT17F080A-30JU supports a maximum serial configuration clock frequency of 33 MHz during FPGA bitstream loading. This value is specified under standard operating conditions (VCC = 3.3 V, TA = -40°C to +85°C) and enables fast startup times for large SRAM FPGAs. The device also supports lower frequencies down to DC, providing flexibility for noise-sensitive or low-power implementations. Note that 2-wire ISP programming operates at up to 10 MHz.

Does the AT17F080A-30JU require an external pull-up resistor on the READY pin?

Yes, the AT17F080A-30JU READY pin is an open-collector output that requires an external 4.7 kΩ pull-up resistor to VCC for proper operation. During power-up reset, READY is actively driven low; once initialization completes, it transitions to high-impedance (released) state. Without the pull-up, the signal remains undefined, potentially causing FPGA configuration timing uncertainty or failure to detect ready status in host-controlled systems.

Can the AT17F080A-30JU store and switch between multiple FPGA configurations without external logic?

Yes, the AT17F080A-30JU can store and switch between up to four independent FPGA configurations using its built-in page-select architecture. When PAGE_EN is asserted high, the 8-Mbit memory space is divided into four 2-Mbit pages, selected via PAGESEL[1:0]. This allows the FPGA to load different bitstreams - such as for varying I/O standards, DSP algorithms, or protocol stacks - without external address decoding or microcontroller intervention.

Is the AT17F080A-30JU pin-compatible with the AT17F040A-30JU?

Yes, the AT17F080A-30JU is pin-compatible with the AT17F040A-30JU in the 20-lead PLCC package. Both share identical pin assignments, electrical characteristics, and functional behavior - differing only in memory density (8 Mbit vs. 4 Mbit) and internal address space size. This allows direct replacement in existing designs where higher configuration storage capacity is needed, provided FPGA configuration logic accommodates the extended address range.

What programming tools are officially supported for the AT17F080A-30JU?

The AT17F080A-30JU is officially supported by the Atmel ATDH2200E Programming Kit and ATDH2225 In-System Programming (ISP) Cable. It is also compatible with numerous third-party programmers that implement the 2-wire serial programming protocol defined in the AT17FxxxA Programming Specification. Programming occurs at 3.3 V only; no external high-voltage supply is required, as charge pumps generate internal programming voltages.