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X1240 Datasheet(PDF) 15 Page - Xicor Inc.

Part No. X1240
Description  Real Time Clock/Calendar with EEPROM
Download  19 Pages
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Maker  XICOR [Xicor Inc.]
Homepage  http://www.xicor.com
Logo XICOR - Xicor Inc.

X1240 Datasheet(HTML) 15 Page - Xicor Inc.

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X1240
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AC SPECIFICATIONS (TA = -40˚C to +85˚C, VCC = +2.7V to +3.6V, unless otherwise specified.)
Notes: (1) Typical values are for TA = 25˚C and VCC = 5.0V
(2) This parameter is periodically sampled and not 100% tested.
(3) Cb = total capacitance of one bus line in pF.
TIMING DIAGRAMS
Bus Timing
Symbol
Parameter
Min
Max
Units
fSCL
SCL Clock Frequency
0
400
KHz
tIN
Pulse width Suppression Time at inputs
50
nS
tAA
SCL LOW to SDA Data Out Valid
0.1
0.9
µS
tBUF
Time the bus must be free before a new transmission
can start
1.3
µS
tLOW
Clock LOW Time
1.3
µS
tHIGH
Clock HIGH Time
0.6
µS
tSU:STA
Start Condition Setup Time
0.6
µS
tHD:STA
Start Condition Hold Time
0.6
µS
tSU:DAT
Data In Setup Time
100
nS
tHD:DAT
Data In Hold Time
0
µS
tSU:STO
Stop Condition Setup Time
0.6
µS
tDH
Data Output Hold Time
50
nS
tR
SDA and SCL Rise Time
20 +.1Cb(3)
300
nS
tF
SDA and SCL Fall Time
20 +.1Cb(3)
300
nS
Cb
Capacitive load for each bus line
400
pF
tSU:STO
tDH
tHIGH
tSU:STA
tHD:STA
tHD:DAT
tSU:DAT
SCL
SDA IN
SDA OUT
tF
tLOW
tBUF
tAA
tR


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