Microchip Technology AT17LV128-10JC

Overview

AT17LV128-10JC from Atmel is a 128-Kbit FPGA configuration EEPROM designed for serial loading of SRAM-based FPGAs including Xilinx XC3000/XC4000, Altera FLEX/APEX, and Atmel AT40K/AT94K devices. It supports dual-voltage operation (3.3V ±10% or 5.0V ±5%/±10%), offers in-system programmability via two-wire bus, and provides cascading capability through CEO output for multi-device configurations.

For engineers reviewing the AT17LV128-10JC datasheet, AT17LV128-10JC pinout, AT17LV128-10JC application, or AT17LV128-10JC equivalent, key selection criteria include industrial temperature range (-40°C to +85°C), 20-lead PLCC package compatibility, configurable reset polarity, low-power standby current (≤100 µA at 3.3V), and verified interoperability with master serial mode FPGAs.

Technical Context

The AT17LV128-10JC implements a serial EEPROM architecture optimized for FPGA configuration memory, using a simple clocked read protocol driven by the FPGA's CCLK signal. Its internal address counter auto-resets on power-up and responds to RESET/OE assertion, enabling deterministic initialization without external controller intervention.

It features dual-mode operation: normal configuration mode (SER_EN = High) for FPGA bootloading, and two-wire ISP mode (SER_EN = Low) for field reprogramming. The CEO output enables daisy-chained configurations, while programmable WP and RESET/OE polarity support flexible system-level control logic integration.

Key Specifications

Pinout & Package

AT17LV128-10JC is packaged in a 20-lead PLCC (Plastic Leaded Chip Carrier) with 1.27 mm lead pitch, JEDEC MS-018 compliant, footprint dimensions 9.78 mm × 9.78 mm × 3.56 mm (max height), and lead coplanarity ≤0.102 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC18V02 and AT17LV256-10JC, the AT17LV128-10JC delivers optimal balance of density, cascading flexibility, and field reprogrammability for mid-size FPGA deployments in industrial and avionics systems where layout reuse and upgrade path scalability are critical.

Availability

AT17LV128-10JC is available at Aetrix Electronics and suitable for industrial PLCs, FPGA-based test equipment, military avionics, medical imaging processors, and embedded control systems requiring stable component supply across extended product lifecycles.

Supply support for AT17LV128-10JC 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 FPGA configuration solutions for industrial, automotive, and communications markets.

The AT17LV series was designed specifically to provide reliable, low-power, pin-compatible configuration memory for SRAM-based FPGAs across Xilinx, Altera, and Atmel device families, emphasizing ease of integration and long-term data retention.

FAQ

What is the maximum clock frequency supported by the AT17LV128-10JC during FPGA configuration?

The AT17LV128-10JC supports a maximum clock frequency of 10 MHz when operating at 3.3 V in industrial temperature range (-40°C to +85°C), and 12.5 MHz at 5 V commercial range. This timing ensures reliable bitstream loading into compatible SRAM FPGAs such as Xilinx XC4000 or Altera FLEX devices without setup/hold violations.

Does the AT17LV128-10JC support in-system programming (ISP), and what interface is required?

Yes, the AT17LV128-10JC supports in-system programming via a two-wire serial interface activated when SER_EN is driven Low. This mode enables field reprogramming without removing the device from the PCB, using standard industry programmers or Atmel's ATDH2225 ISP Cable, with no external voltage programming required.

Can multiple AT17LV128-10JC devices be cascaded, and how is this implemented?

Yes, AT17LV128-10JC devices can be cascaded using the CEO (Chip Enable Output) pin. When the first device completes its bitstream, CEO goes Low and enables the CE input of the next device in the chain. This daisy-chain method allows seamless expansion of total configuration memory without FPGA-side changes, provided CEO-to-CE interconnect is implemented per datasheet timing.

What is the data retention specification for the AT17LV128-10JC at industrial temperature?

The AT17LV128-10JC guarantees 90 years of data retention at 85°C for industrial-grade operation. This specification is measured under worst-case conditions and ensures bitstream persistence over decades in demanding environments such as factory automation, transportation systems, and energy infrastructure.

Is the AT17LV128-10JC pin-compatible with other members of the AT17LV family, and which ones?

The AT17LV128-10JC shares identical pinout and functionality with AT17LV65-10JC and AT17LV256-10JC in the 20-lead PLCC package. However, it is not pin-compatible with AT17LV512-10JC or higher-density variants due to differences in internal feature mapping (e.g., WP2, READY), as explicitly noted in the datasheet's pin compatibility table.