NX25F011B Ver la hoja de datos (PDF) - Unspecified

Número de pieza

componentes Descripción

Fabricante

NX25F011B

1M-BIT, 2M-BIT, AND 4M-BIT SERIAL FLASH MEMORIES WITH 4-PIN SPI INTERFACE

Unspecified 

NX25F011B

NX25F021B

NX25F041B

COMPATIBILITY COMMANDS FOR 25xxxA

SERIES DEVICES

Read from SRAM (81H)

The Read from SRAM command (81H) provides access to

the 264-Byte SRAM independent of any Flash memory

array operations. The command is similar to the Read from

Sector command except for the sector address field

S[15:0] which is replaced with all 0 bits.

Read from

SRAM

Command

SI

81H

16 Clocks

0000H

Byte

Address*

B[15:0]

16 Clocks

0000H

SO

*The byte address only uses bits [8:0]

RB[15:0]

Read/Busy

Status

First Byte - Last Byte

Read SRAM Data

Write to SRAM (82H)

The Write to SRAM command (82H) provides access to

the 264-Byte SRAM independently of any Flash memory

array operation. The command is similar to the Write to

Sector command sequence except that the sector

address field S[15:0] is replaced by all 0 bits. When CS

is asserted high to complete the command, the contents

of the SRAM will be maintained until overwritten through

another command or the power is removed. Using the

Write to SRAM command, data can be loaded in prepara-

tion of writing to a sector in memory and then transferred

to a selected sector using the Transfer SRAM to Sector

command.

Write to

SRAM

Command

16 Clocks

SI

82H

0000H

Byte

Address*

B[15:0]

SO

*The byte address only uses bits [8:0]

Write Sector Data

First Byte - Last Byte

8 Clocks

00H

26

NexFlash Technologies, Inc.

PRELIMINARY NXSF016F-1201

12/12/01 ©

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