NX26F011A
NX26F041A
NX26F011A
NX26F041A
1M-BIT AND 4M-BIT SERIAL FLASH MEMORY
WITH 2-PIN NXS INTERFACE
PRE-RELEASE
MAY1999
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FEATURES
• Tailored for Portable and Mobile Media-Storage
– Ideal for portable/mobile applications that transfer
and store data, audio, or images
• 1M-bits or 4M-bits of NexFlash Serial Memory
– 512 or 2,048 sectors of 264 bytes each
– Simple commands: Reset, Read, Write,
Ready/Busy
– Removable Serial Flash Module package option
– No pre-erase required, auto-erases before write
• NexFlash™ Non-volatileMemoryTechnology
– Patented Single-Transistor EEPROM Cell
– High-density, cost-effective, low-voltage/power
– 10K/100K endurance, ten years data retention
• Two-pin NXS Serial Interface
– Saves Microcontroller-pins, simplifies PCB layout,
low switching noise compared to parallel Flash
– Supports clock operation as fast as 16 MHz
– Multi-device cascading, up to 16 devices
• Flash Memory for Battery-Operation
– Single 5V or 3V supply for Read, Erase/Write
– Icc 5 mA active with 1 µA standby power
– 5 ms Erase/Write times for efficient battery use
• Development Tools and Accessories
– SFK-NXS Serial Flash Development Kit
Description
TheNexFlash™NX26F011AandNX26F041ASerialFlash
Memories are tailored for portable/mobile media-storage
applicationsthattransferandstoredata,audioandimages.
Manufactured using NexFlash’s patented single transistor
EEPROM memory cell, the NX26F011A and NX26F041A
provide a high-density, low-voltage, low-power, and cost
effective solution for battery-operated nonvolatile data
storage requirements. The NX26F011A and NX26F041A
can operate with a single 5V or 3V supply for Read, Write,
and Erase. Power consumption is very low due to µA
standbycurrentandfastErase/Writeperformance(asfast
as5mspersector)thatminimizespower-ontime,resulting
inahighlyefficientenergy-per-transferratio.TheNX26F011A
andNX26F041Aoffer1M-bitsand4M-bitsofFlashmemory
organized in sectors of 264 bytes each. Each sector is
individually addressable through basic commands or
control functions such as Reset, Read, Erase/Write, and
Ready/Busy. The NXS (NexFlash Serial) 2-wire serial
interface is ideal for use with microcontrollers since it only
requirestwopins.Thisleavespinsnormallyusedforparallel
Flash free for other uses. The NXS interface supports clock
ratesasfastas16MHzandallowsformulti-devicecascading
of up to 16 devices. It also simplifies PC-board layout and 11
generateslesstransientnoisethanparalleldevices.Devel-
opment is supported with the NexFlash Serial Flash
Development Kit.
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This document contains PRELIMINARY INFORMATION. NexFlash reserves the right to make changes to its product at any time without notice in order to improve design and supply the
bestpossibleproduct. Weassumenoresponsibilityforanyerrorswhichmayappearinthispublication. Copyright1998, NexFlashTechnologies, Inc.
NexFlashTechnologies, Inc.
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PRELIMINARYNXSF009A-0599
05/05/99 ©