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NX25F641C-3T

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

NexFlash -> Winbond Electronics 

NX25F641C

AC ELECTRICAL CHARACTERISTICS (PRELIMINARY)

Symbol Description

Min

tCYC

SCK Serial Clock Period With RCE=0

50

tWH

SCK Serial Clock High or Low Time

22

tWL

tSU

Data Input Setup Time to SCLK

5

tIH

Data Input Hold Time from SCLK

10

tV

Data Output Valid after SCLK (1,3)

—

tLEAD

CS Setup Time to Command

100

tLAG

CS Delay Time after Command

100

tWP

Erase/Write Program Time (4)

—

(see Write to Sector Command)

tXS

Transfer or Compare Sector

—

(see Transfer or Compare Command)

tHD

SCK Setup Time to HOLD

10

tCD

SCK Hold Time from HOLD

30

tCS

CS Deselect Time

160

tRB

READY / BUSY Valid Time

160

tDIS

Data Output Disable Time

—

tOH

Data Output Hold Time After SCK

0

Typ Max

——

——

——

——

— 20

——

——

10 15

100 150

——

——

——

——

— 18

——

Notes:

1. Test points are 10% and 90% points for rise/fall times. All others timings are measured at 50% point.

2. With 30 pF (16 MHz) load SO to GND.

3. Maximum program time for 99% of sectors, <1% may require 4x this value.

Unit

(20Mhz) ns

ns

ns

ns

ns

ns

ns

ms

µs

ns

ns

ns

ns

ns

ns

20

NexFlash Technologies, Inc.

PRELIMINARY NXSF032A-0502

05/06/02 ©

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