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AT17LV256A-10JC

FPGA Configuration EEPROM Memory

Atmel Corporation 

Features

• Serial EEPROM Family for Configuring Altera FLEX® Devices

• In-System Programmable via 2-wire Bus

• Simple Interface to SRAM FPGAs

• EE Programmable 64K, 128K and 256K Bits Serial Memories Designed to Store

Configuration Programs for Field Programmable Gate Arrays (FPGAs)

• Cascadable Read-back to Support Additional Configurations or Future Higher-density

Arrays (128K and 256K only)

• Low-power CMOS EEPROM Process

• Programmable Reset Polarity

• Available in the Space-efficient Surface-mount PLCC Package (Compatible across

Product Family)

• Emulation of Atmel’s AT24CXXX Serial EEPROMs

• Available in 3.3V ± 10% LV and 5V ± 5% C Versions

Description

The AT17C65A/128A/256A and AT17LV65A/128A/256A (low-density AT17A Series)

FPGA Configuration EEPROMs (configurators) provide an easy-to-use, cost-effective

configuration memory for programming Altera FLEX devices. The AT17A Series is

packaged in the popular 20-lead PLCC. The AT17A Series family uses a simple serial-

access procedure to configure one or more FPGA devices. The AT17A Series organi-

zation supplies enough memory to configure one or multiple smaller FPGAs. Using a

feature of the AT17A Series, the user can select the polarity of the reset function by

programming a special EEPROM byte. These devices also support a write-protection

mechanism within its programming mode.

The AT17A Series Configurators can be programmed with industry-standard program-

mers or Atmel’s ATDH2200E Programming Kit.

Pin Configurations

20-lead PLCC

DCLK 4

NC 5

NC 6

NC 7

(WP) OE 8

18 SER_EN

17 NC

16 NC

15 NC

14 NC

FPGA

Configuration

EEPROM

Memory

64-kilobit, 128-kilobit

and 256-kilobit

Altera Pinout

AT17C65A

AT17LV65A

AT17C128A

AT17LV128A

AT17C256A

AT17LV256A

Rev. 0996D–08/01

1

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