Datasheet

(V
CC
= MIN to MAX,V
BACKUP
= MIN to MAX, T
A
=-40°Cto+85°C,unlessotherwisenoted.)(Note2)
(V
CC
= 0V,V
BACKUP
= MIN to MAX, T
A
=-40°Cto+85°C,unlessotherwisenoted.)(Note2)
(V
CC
= MIN to MAX, T
A
=-40°Cto+85°C,unlessotherwisenoted.)(Note2,Figure1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Trickle-Charger Resistor Register
10h=A6h,V
CC
= Typ,
V
BACKUP
=0V
R2 2000 Ω
Trickle-Charger Resistor Register
10h=A7h,V
CC
= Typ,
V
BACKUP
=0V
R3 4000 Ω
V
BACKUP
LeakageCurrent I
BKLKG
-100 25 200 nA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
BACKUP
CurrentEOSC=0,
SQWOff
I
BKOSC
(Note8) 300 600 nA
V
BACKUP
CurrentEOSC=0,
SQWOn
I
BKSQW
(Note8) 500 1100 nA
V
BACKUP
CurrentEOSC=1 I
BKDR
10 200 nA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SCLClockFrequency f
SCL
0.03 400 kHz
BusFreeTimeBetweenaSTOP
and START Condition
t
BUF
1.3 µs
HoldTime(Repeated)START
Condition
t
HD:STA
(Note 9) 0.6 µs
LowPeriodofSCLClock t
LOW
1.3 µs
HighPeriodofSCLClock t
HIGH
0.6 µs
Setup Time for a Repeated
START Condition
t
SU:STA
0.6 µs
DataHoldTime t
HD:DAT
(Notes10,11) 0 0.9 µs
Data Setup Time t
SU:DAT
(Note 12) 100 ns
RiseTimeofBothSDAandSCL
Signals
t
R
(Note 13) 300 ns
FallTimeofBothSDAandSCL
Signals
t
F
(Note 13) 300 ns
SetupTimeforSTOPCondition t
SU:STO
0.6 µs
DS1339B Low-Current, I
2
C, Serial Real-Time Clock
For High-ESR Crystals
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DC Electrical Characteristics (continued)
DC Electrical Characteristics
AC Electrical Characteristics