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M29F040B Datasheet(PDF) 14 Page - STMicroelectronics

Part # M29F040B
Description  4 Mbit (512Kb x8, Uniform Block) Single Supply Flash Memory
PDF  21 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M29F040B Datasheet(HTML) 14 Page - STMicroelectronics

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Figure 10. Write AC Waveforms, Write Enable Controlled
AI02908
E
G
W
A0-A18
DQ0-DQ7
VALID
VALID
VCC
tVCHEL
tWHEH
tWHWL
tELWL
tAVWL
tWHGL
tWLAX
tWHDX
tAVAV
tDVWH
tWLWH
tGHWL
Table 12. Write AC Characteristics, Write Enable Controlled
(TA = 0 to 70 °C, –40 to 85 °C or –40 to 125 °C)
Symbol
Alt
Parameter
M29F040B
Unit
45
55
70 / 90
tAVAV
tWC
Address Valid to Next Address Valid
Min
45
55
70
ns
tELWL
tCS
Chip Enable Low to Write Enable Low
Min
0
0
0
ns
tWLWH
tWP
Write Enable Low to Write Enable High
Min
40
40
45
ns
tDVWH
tDS
Input Valid to Write Enable High
Min
25
25
30
ns
tWHDX
tDH
Write Enable High to Input Transition
Min
0
0
0
ns
tWHEH
tCH
Write Enable High to Chip Enable High
Min
0
0
0
ns
tWHWL
tWPH
Write Enable High to Write Enable Low
Min
20
20
20
ns
tAVWL
tAS
Address Valid to Write Enable Low
Min
0
0
0
ns
tWLAX
tAH
Write Enable Low to Address Transition
Min
40
40
45
ns
tGHWL
Output Enable High to Write Enable Low
Min
0
0
0
ns
tWHGL
tOEH
Write Enable High to Output Enable Low
Min
0
0
0
ns
tVCHEL
tVCS
VCC High to Chip Enable Low
Min
50
50
50
µs



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