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NX25F640C-3T

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

NexFlash -> Winbond Electronics 

NX25F640C

FEATURES

• 64M-bit Serial Flash Memory

• Flash storage for systems with limited pins,

space, and power

- Ideal for high density serial code-download

- Data, voice and image storage

- Battery-operated products

• Nonvolatile Memory Technology

- Single transistor EEPROM memory

- 16,384 sectors of 522 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 16MHz

- 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

- Two on-board 522-byte SRAM Buffers

- Byte-level addressing

- Configurable software write-protection

• Package Options

- 32-PIN TSOP (Type I)

- Removable Cards and Modules

DESCRIPTION

The NX25F640C Serial Flash memory provide a storage

solution for systems which are limited in power, pins,

space, hardware and firmware resources. The NX25F640C

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

NX25F640C 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 522

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 NXSF022F-0502

05/20/02 ©

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