DS1244YP Ver la hoja de datos (PDF) - Dallas Semiconductor -> Maxim Integrated
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DS1244YP Datasheet PDF : 21 Pages
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DS1244/DS1244P
MEMORY AC ELECTRICAL CHARACTERISTICS
Over the operating range (3.3V)
PARAMETER
SYMBOL
DS1244W-120
MIN
MAX
UNITS NOTES
Read Cycle Time
Access Time
OE to Output Valid
tRC
120
ns
tACC
120
ns
tOE
60
ns
CE to Output Valid
tCO
120
ns
OE or CE to Output Active
tCOE
5
ns
5
Output High-Z from Deselection
tOD
40
ns
5
Output Hold from Address Change
tOH
5
ns
Write Cycle Time
tWC
120
ns
Write Pulse Width
tWP
90
ns
3
Address Setup Time
tAW
0
ns
Write Recovery Time
tWR
20
ns
10
Output High-Z from WE
tODW
40
ns
5
Output Active from WE
tOEW
5
ns
5
Data Setup Time
Data Hold Time from WE
tDS
50
tDH
20
ns
4
ns
4
PHANTOM CLOCK AC ELECTRICAL CHARACTERISTICS
Over the operating range (3.3V)
PARAMETER
SYMBOL MIN
TYP
MAX UNITS NOTES
Read Cycle Time
CE Access Time
tRC
120
tCO
ns
100
ns
OE Access Time
tOE
100
ns
CE to Output Low-Z
tCOE
5
ns
OE to Output Low-Z
tOEE
5
ns
CE to Output High-Z
tOD
40
ns
5
OE to Output High-Z
tODO
40
ns
5
Read Recovery
Write Cycle Time
Write Pulse Width
Write Recovery
Data Setup Time
Data Hold Time
CE Pulse Width
tRR
20
tWC
120
tWP
100
tWR
20
tDS
45
tDH
0
tCW
105
ns
ns
ns
3
ns
10
ns
4
ns
4
ns
RESET Pulse Width
tRST
120
ns
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