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90-0092 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. 90-0092
Description  I2C Serial Real-Time Clock
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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DS1339 I
2C Serial Real-Time Clock
4 of 20
AC ELECTRICAL CHARACTERISTICS
(VCC = MIN to MAX, TA = -40°C to +85°C.) (Note 9)
PARAMETER
SYMBOL
CONDITION
MIN
TYP
MAX
UNITS
SCL Clock Frequency
fSCL
Fast mode
100
400
kHz
Standard mode
100
Bus Free Time Between a STOP
and START Condition
tBUF
Fast mode
1.3
µs
Standard mode
4.7
Hold Time (Repeated) START
Condition (Note 10)
tHD:STA
Fast mode
0.6
µs
Standard mode
4.0
LOW Period of SCL Clock
tLOW
Fast mode
1.3
µs
Standard mode
4.7
HIGH Period of SCL Clock
tHIGH
Fast mode
0.6
µs
Standard mode
4.0
Setup Time for a Repeated
START Condition
tSU:STA
Fast mode
0.6
µs
Standard mode
4.7
Data Hold Time (Notes 11, 12)
tHD:DAT
Fast mode
0
0.9
µs
Standard mode
0
Data Setup Time (Note 13)
tSU:DAT
Fast mode
100
ns
Standard mode
250
Rise Time of Both SDA and SCL
Signals (Note 14)
tR
Fast mode
20 + 0.1CB
300
ns
Standard mode
20 + 0.1CB
1000
Fall Time of Both SDA and SCL
Signals (Note 14)
tF
Fast mode
20 + 0.1CB
300
ns
Standard mode
20 + 0.1CB
300
Setup Time for STOP Condition
tSU:STO
Fast mode
0.6
µs
Standard mode
4.0
Capacitive Load for Each Bus
Line (Note 14)
CB
400
pF
I/O Capacitance (SDA, SCL)
CI/O
(Note 9)
10
pF
Oscillator Stop Flag (OSF) Delay
tOSF
(Note 15)
100
ms




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