DC and ac parameters
M29W640GH, M29W640GL, M29W640GT, M29W640GB
Figure 19. Data Polling ac waveforms
tEHQZ
tWHEH
E
tELQV
tGHQZ
tGLQV
G
tWHGL2
W
tWHWH1 or tWHWH2
Hi-Z
Hi-Z
DQ7=
DQ7 DATA
DQ7
Valid data
DQ6-DQ0=
Output flag
DQ6-DQ0=
Valid data
DQ6-DQ0
DATA
tWHRL
R/B
AI12782
1. DQ7 returns valid data bit when the ongoing Program or Erase command is completed.
2. See Table 21: Data polling and data toggle ac characteristics and Table 18: Read ac characteristics for details on the
timings.
Figure 20. Toggle/alternative Toggle bit polling ac waveforms (8-bit mode)
A0-A20/
A–1
tGHAX
tAXGL
E
tWHGL2
tAVEL
tEHAX
W
tEHEL2
tGHGL2
tGHGL2
G
tGLQV
Toggle
tWHDX
Data
tELQV
Stop
Output
Valid
DQ6/DQ2
Toggle
Toggle
toggling
tWHRL
R/B
AI12783
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 Table 21: Data polling and data toggle ac characteristics and Table 18: Read ac characteristics for details on the
timings.
54/90
NUMONYX [ NUMONYX B.V ]
