M29W640GH, M29W640GL, M29W640GT, M29W640GB
Command Interface
Figure 8.
Chip/Block Erase waveforms (8-bit mode)
tAVAV
A0-A20/
A–1
555h/BA
(1)
555h
2AAh
555h
555h
2AAh
tAVWL
tWLAX
tELWL
tWHEH
E
tGHWL
G
tWLWH
tWHWL
W
tDVWH
DQ0-DQ7/
DQ8-DQ15
10h/
30h
AAh
55h
AAh
55h
tWHDX
80h
AI12781
1. For a Chip Erase command, addresses and data are 555h and 10h, respectively, while they are BA and 30h for a Block
Erase command.
2. BA is the block address.
3. See Table 19: Write ac characteristics and Table 18: Read ac characteristics for details on the timings.
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