AT25DF021 datasheet(1/16 Pages) ATMEL

Part #	AT25DF021

Description	2-Megabit 2.3-volt or 2.7-volt Minimum SPI Serial Flash Memory

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Manufacturer	ATMEL [ATMEL Corporation]

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Features

• Very Low-cost Configuration Memory

• Programmable 1,048,576 x 1, 2,097,152 x 1, 4,194,304 x 1 and 7,340,032 x 1-bit Serial

Memories Designed to Store Configuration Programs for Field Programmable Gate

Arrays (FPGAs)

• 1.8V, 2.5V, and 3.3V I/O

• 3.3V Supply Voltage

• Program Support using an Atmel Programmer or Industry-standard Third Party

Programmers

• In-System Programmable (ISP) via JTAG Interface (IEEE 1532)

• IEEE 1149.1 Boundary-scan Testability

• Simple Interface to SRAM FPGAs

• Pin Compatible with Xilinx® XCFxxS Series Platform Flash PROM to Configure Xilinx

Spartan® and Virtex® FPGAs

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

• Low-power CMOS FLASH Process

• Available in 20-lead TSSOP Package

• Low-power Standby Mode

• Fast Serial Download Speeds up to 33 MHz

• Endurance: 100,000 Write Cycles Typical

• Green (Pb/Halide-free/RoHS Compliant) Package

• Functionally-compatible with Existing AT17 Series Configuration Memories to

Configure Atmel AT40KAL Series FPGAs

1.

Description

The AT18F Series of JTAG In-System Programmable Configuration PROMs (Configu-

rators) provide an easy-to-use, cost-effective configuration memory for Field

Programmable Gate Arrays. The AT18F Series device is packaged in a 20-lead

TSSOP. The AT18F Series Configurator uses a simple serial-access procedure to

configure one or more FPGA devices.

The AT18F Series Configurators can be programmed with Atmel or industry-standard,

third-party, stand-alone programmers such as BP, Data I/O, Hi-Lo, etc.

AT18F Series Configuration Memory Offering

AT18F010

AT18F002

AT18F040

AT18F080

Density

1 Mbit

2 Mbit

4 Mbit

7 Mbit

JTAG Programming

Yes

VCCINT

3.3V

VCCO

1.8-3.3V

VCCJ

1.8-3.3V

Configuration Clock

33 MHz

Package

20-lead TSSOP

Green Package

Yes

FPGA

Configuration

Flash Memory

AT18F010

AT18F002

AT18F040

AT18F080

Preliminary

3672A–CNFG–1/08

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