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M29W640DB Datasheet(PDF) 23 Page - STMicroelectronics

Part # M29W640DB
Description  64 Mbit 8Mb x8 or 4Mb x16, Boot Block 3V Supply Flash Memory
PDF  49 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M29W640DB Datasheet(HTML) 23 Page - STMicroelectronics

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M29W640DT, M29W640DB
Figure 10. Write AC Waveforms, Write Enable Controlled
Table 13. Write AC Characteristics, Write Enable Controlled
Note: 1. Sampled only, not 100% tested.
Symbol
Alt
Parameter
M29W640D
Unit
tAVAV
tWC
Address Valid to Next Address Valid
Min
90
ns
tELWL
tCS
Chip Enable Low to Write Enable Low
Min
0
ns
tWLWH
tWP
Write Enable Low to Write Enable High
Min
50
ns
tDVWH
tDS
Input Valid to Write Enable High
Min
50
ns
tWHDX
tDH
Write Enable High to Input Transition
Min
0
ns
tWHEH
tCH
Write Enable High to Chip Enable High
Min
0
ns
tWHWL
tWPH
Write Enable High to Write Enable Low
Min
30
ns
tAVWL
tAS
Address Valid to Write Enable Low
Min
0
ns
tWLAX
tAH
Write Enable Low to Address Transition
Min
50
ns
tGHWL
Output Enable High to Write Enable Low
Min
0
ns
tWHGL
tOEH
Write Enable High to Output Enable Low
Min
0
ns
tWHRL
(1)
tBUSY
Program/Erase Valid to RB Low
Max
35
ns
tVCHEL
tVCS
VCC High to Chip Enable Low
Min
50
µs
AI05560
E
G
W
A0-A20/
A–1
DQ0-DQ7/
DQ8-DQ15
VALID
VALID
VCC
tVCHEL
tWHEH
tWHWL
tELWL
tAVWL
tWHGL
tWLAX
tWHDX
tAVAV
tDVWH
tWLWH
tGHWL
RB
tWHRL



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