M29W640GH70NB6E 参数 Datasheet PDF下载

DC and ac parameters

Figure 19. Data Polling ac waveforms

tWHEH

E

tGLQV

G

tWHGL2

W

M29W640GH, M29W640GL, M29W640GT, M29W640GB

tELQV

tEHQZ

tGHQZ

tWHWH1 or tWHWH2

DQ7

DATA

DQ7

DQ7=

Valid data

Hi-Z

DQ6-DQ0

DATA

tWHRL

DQ6-DQ0=

Output flag

DQ6-DQ0=

Valid data

Hi-Z

R/B

AI12782

1. DQ7 returns valid data bit when the ongoing Program or Erase command is completed.

2. See

and

for details on the

timings.

Figure 20. Toggle/alternative Toggle bit polling ac waveforms (8-bit mode)

A0-A20/

A–1

tGHAX

E

tWHGL2

W

tGHGL2

G

tWHDX

DQ6/DQ2

Data

tWHRL

R/B

AI12783

tAXGL

tEHAX

tEHEL2

tAVEL

tGHGL2

tGLQV

Toggle

Toggle

tELQV

Toggle

Stop

toggling

Output

Valid

1. DQ6 stops toggling when the ongoing Program or Erase command is completed. DQ2 stops toggling when the ongoing

Chip Erase or Block Erase command is completed.

2. See

and

for details on the

timings.

54/90