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M48T35_0708 Fiches technique(PDF) 10 Page - STMicroelectronics

No de pièce M48T35_0708
Description  5V, 256 Kbit (32 Kb x 8) TIMEKEEPER SRAM
PDF  29 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48T35_0708 Fiches technique(HTML) 10 Page - STMicroelectronics

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Operation modes
M48T35 M48T35Y
10/29
WRITE Cycles to avoid bus contention; although, if the output bus has been activated by a
low on E and G, a low on W will disable the outputs tWLQZ after W falls.
Figure 6.
Write enable controlled, write AC waveform
Figure 7.
Chip enable controlled, write AC waveforms
AI00926
tAVAV
tWHAX
tDVWH
DATA INPUT
A0-A14
E
W
DQ0-DQ7
VALID
tAVWH
tAVEL
tWLWH
tAVWL
tWLQZ
tWHDX
tWHQX
AI00927
tAVAV
tEHAX
tDVEH
A0-A14
E
W
DQ0-DQ7
VALID
tAVEH
tAVEL
tAVWL
tELEH
tEHDX
DATA INPUT
Table 4.
Write mode AC characteristics
Symbol
Parameter(1)
M48T35/Y
Unit
Min
Max
tAVAV
WRITE Cycle Time
70
ns
tAVWL
Address Valid to WRITE Enable Low
0
ns
tAVEL
Address Valid to Chip Enable Low
0
ns



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