NX25F011A-5VI-R Ver la hoja de datos (PDF) - NexFlash -> Winbond Electronics

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NX25F011A-5VI-R

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

NexFlash -> Winbond Electronics 

NX25F011A

NX25F041A

Clear Compare Status

The Clear Compare Status command (89H) works in

Clear Compare

conjunction with the Compare Sector to SRAM command

and the Status Register. If any of the compared bits are not

Status

Command 8 Clocks

1

equal, then the Compare Not Equal (CNE) bit in the Status

Register is set to a 1. The Clear Compare Status command

SI

89H

00H

must be executed to reset the CNE bit to a 0.

SO

2

3

Read Device Information Sector

The Read Device Information command provides access

to a read-only sector that can be used to electronically

identify the NexFlash Serial Flash device being used.

Information available includes: part number, density,

voltage, temperature range, package type, and any

special options. This can be extremely useful for sys-

tems that need to accommodate optional densities

Read Device

Info. Sector

Command 16 Clocks

Byte

Address*

16 Clocks

SI

15H

0000H

B[15:0]

0000H

SO

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

4 (e.g., both 1M-bit and 4M-bit). In this case the firmware

can interrogate the Device Information Sector and deter-

mine the density. The Device Information Sector also

5 includes a list of any restricted sectors that might exist in

the device. Refer to Application Note SFAN-02 for more

detailed information on the Device Information Sector

format.

6

7

RB[15:0]

First Byte - Last Byte

Read/Busy

Read Sector Data

Status

8

9

10

11

12

NexFlash Technologies, Inc.

19

PRELIMINARY NXSF014B-0699

06/11/99

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