DS1244YP Ver la hoja de datos (PDF) - Dallas Semiconductor -> Maxim Integrated
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DS1244YP Datasheet PDF : 21 Pages
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DC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
Input Leakage Current
IIL
-1.0
I/O Leakage Current
IIO
-1.0
CE ³ VIH VCC
Output Current @ 2.4V
IOH
-1.0
Output Current @ 0.4V
IOL
2.0
Standby Current CE = 2.2V
ICCS1
Standby Current
ICCS2
CE = VCC - 0.5V
Operating Current tCYC = 70ns
ICC01
Write Protection Voltage
VPF
2.80
Battery Switchover Voltage
VSO
DS1244/DS1244P
Over the operating range (3.3V)
TYP
MAX UNITS NOTES
+1.0
mA
12
+1.0
mA
mA
mA
5
7
mA
2.0
3.0
mA
50
mA
2.86
2.97
V
11
VBAT or VPF
V
11
CAPACITANCE
PARAMETER
Input Capacitance
Input/Output Capacitance
SYMBOL
CIN
CI/O
MIN
TYP
5
5
MAX
10
10
(TA = +25°C)
UNITS NOTES
pF
pF
MEMORY AC ELECTRICAL CHARACTERISTICS Over the operating range (5V)
PARAMETER
SYMBOL
DS1244Y-70
MIN
MAX
UNITS NOTES
Read Cycle Time
Access Time
OE to Output Valid
tRC
70
ns
tACC
70
ns
tOE
35
ns
CE to Output Valid
tCO
70
ns
OE or CE to Output Active
tCOE
5
ns
5
Output High-Z from Deselection
tOD
25
ns
5
Output Hold from Address Change
tOH
5
ns
Write Cycle Time
tWC
70
ns
Write Pulse Width
tWP
50
ns
3
Address Setup Time
tAW
0
ns
Write Recovery Time
tWR
0
ns
Output High-Z from WE
tODW
25
ns
5
Output Active from WE
tOEW
5
ns
5
Data Setup Time
Data Hold Time from WE
tDS
30
tDH
5
ns
4
ns
4
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