M29W640GB NUMONYX [Numonyx B.V], M29W640GB Datasheet - Page 54

• Manufacturer Part Number: M29W640GB
• Description: 64 Mbit (8Mb x8 or 4Mb x16, Page) 3V supply Flash memory
• Manufacturer: NUMONYX [Numonyx B.V]

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