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NX25F641C

64M-BIT SERIAL FLASH MEMORY WITH 4-PIN SPI INTERFACE

NexFlash -> Winbond Electronics 

NX25F641C

FEATURES

• 64M–bit Serial Flash Memory

• Flash storage for systems with limited pins,

space, and power

– Ideal for high density serial code–shadowing

– Data, voice and image storage

– Battery–operated products

• Nonvolatile Memory Technology

– Single transistor EEPROM memory

– 16,384 sectors of 528 bytes each

– Sector erase/write time of 10 ms/sector (typical)

– Ten year data retention

• 4–pin SPI Serial Interface

– Easily interfaces to popular microcontrollers

– Clock operation as fast as 20MHz

– Optional Hold and Ready/Busy pin functions

• Ultra–low Power for Battery–Operation

– Single 2.7–3.6V supply for Read, Erase/Write

– 1 µA standby, 5 mA active (typical)

• Special Features

– Auto-increment sector read for serial

code–shadowing applications

– Two on–board 528–byte SRAM Buffers

– Byte–level addressing

– Configurable software write–protection

• Package Options

– 32–PIN TSOP (Type I)

– Removable Cards and Modules

DESCRIPTION

The NX25F641C Serial Flash memory provide a storage

solution for systems which are limited in power, pins,

space, hardware and firmware resources. The NX25F641C

is ideal for applications that store voice, images and data

in a portable/mobile environment as well for down-loading

code into controllers with embedded DRAM or SRAM. The

NX25F641C operates on a single 2.7V-3.6V power supply

for read and erase/write with typical current

consumption as low as 5mA active and less than 1uA

standby. The array is organized into 16,384 sectors of 528

bytes each. Sector erase/write speeds are as fast as

10ms. The 4-pin SPI serial interface works directly with

popular micro-controllers. Special features include dual

on-chip serial SRAM, byte-level addressing, hardware/

software write protection and removable Serial Flash

Module packaging option. Development is supported with

the PC-based NexFlash Serial Flash Development Kit.

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NexFlash Technologies, Inc.

PRELIMINARY NXSF032A-0502

05/06/02 ©

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