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DS1339A
Low-Current, I2C, Serial Real-Time Clock
3
Maxim Integrated
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = MIN to MAX, VBACKUP = MIN to MAX, TA = -40NC to +85NC, unless otherwise noted.) (Note 2)
DC ELECTRICAL CHARACTERISTICS
(VCC = 0V, VBACKUP = MIN to MAX, TA = -40NC to +85NC, unless otherwise noted.) (Note 2)
AC ELECTRICAL CHARACTERISTICS
(VCC = MIN to MAX, TA = -40NC to +85NC, unless otherwise noted.) (Note 2, Figure 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Trickle-Charger Resistor Register
10h = A6h, VCC = Typ,
VBACKUP = 0V
R2
2000
I
Trickle-Charger Resistor Register
10h = A7h, VCC = Typ,
VBACKUP = 0V
R3
4000
I
VBACKUP Leakage Current
IBKLKG
-100
25
200
nA
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
VBACKUP Current EOSC = 0,
SQW Off
IBKOSC
(Note 8)
300
600
nA
VBACKUP Current EOSC = 0,
SQW On
IBKSQW
(Note 8)
500
1100
nA
VBACKUP Current EOSC = 1
IBKDR
10
200
nA
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SCL Clock Frequency
fSCL
0.03
400
kHz
Bus Free Time Between a STOP
and START Condition
tBUF
1.3
F
s
Hold Time (Repeated) START
Condition
tHD:STA
(Note 9)
0.6
F
s
Low Period of SCL Clock
tLOW
1.3
F
s
High Period of SCL Clock
tHIGH
0.6
F
s
Setup Time for a Repeated
START Condition
tSU:STA
0.6
F
s
Data Hold Time
tHD:DAT
(Notes 10, 11)
0
0.9
F
s
Data Setup Time
tSU:DAT
(Note 12)
100
ns
Rise Time of Both SDA and SCL
Signals
tR
(Note 13)
20 +
0.1CB
300
ns
Fall Time of Both SDA and SCL
Signals
tF
(Note 13)
20 +
0.1CB
300
ns
Setup Time for STOP Condition
tSU:STO
0.6
F
s
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