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NX-SFK-64MS

SERIAL FLASH DEVELOPMENT KIT

NexFlash -> Winbond Electronics 

NX-SFK-64M/64MS

DESCRIPTION

The Serial Flash Development Kit (SFK-64M/SFK-64MS)

from NexFlash is a simple and cost effective solution for

system designers interested in learning about and de-

signing with NexFlash Serial Flash products. The SFK

and associated accessories provide the basic hardware

and software needed to develop with and program the

NexFlash 25F640C SPI and 26F640 NXS2 Serial Flash

Memories and removable Serial Flash Modules (SFMs).

The SFK-64M and 64MS hardware includes a SFM-Port

Adapter (that connects to the parallel port of a PC), a

parallel port cable, batteries, and sample memory or

module. The SFM Port Adapter directly supports 3V SPI

Serial Flash Modules. A Socket Card can be inserted

into the SFM Port Adapter to support development and

programming of alternate packages such as TSOPs.

The Socket Card also provides convenient test points for

probing signals during development. Using SFMs when

prototyping, rather than surface mount packages, can

greatly simplify the development process. SFMs can

easily be moved between the prototype and the SFK for

quick interrogation and modification.

The SFK software includes a well documented set of “C”

Source code routines, which serve as examples of the

25F640C and 26F640C data sheet command sequences

such as Read from Sector, Write to Sector, and Read

Device Information Sector. These examples can be

used as templates for user firmware. The software

includes “Makefile” support, allowing the routines to be

compiled with many popular “C” code compilers from

Borland, Microsoft, and GNU-GCC. Pre-compiled

executables are also included, enabling immediate ac-

cess to the Serial Flash using a simple command-line

syntax within DOS or from a Windows DOS Shell.

The SFK software also provides several useful utilities.

The DIS Parser reads and displays the Device Informa-

tion Sector. A versatile Programmer allows for reading

and writing binary files to and from the Serial Flash using

one of several methods with user specified addressing.

SFM Port Adapter with Socket Cards for use with TSOPs and other Packages

SFM CONTACT PAD

J1 R1

J2

J5

TO PC PORT ADAPTER

TOP VIEW

TEST POINTS

SPI NXS

VCC VCC

WP A2

DET DET J4

RB A0

HOLD

CS1 A3-1

CS0 A3-0

SO SIO

S1

SCK

A1

J3

SCK

GND GND

NexFlash Technologies, Inc.

NX-ST-UNI-SFM REVA 5/99

28/24 TSOP II

SOCKET

28 TSOP I

SOCKET

DIP SOCKET

ADAPTER FOR

32-PIN TSOP SOCKET

2

NexFlash Technologies, Inc.

PRELIMINARY NXK003C-0902

09/06/02 ©

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