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BU9873NUX-TTR Datasheet(PDF) 6 Page - Rohm

No. de pieza BU9873NUX-TTR
Descripción Electrónicos  I2C BUS Serial Interface RTC with High-precision Oscillation Adjustment
Download  40 Pages
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Fabricante Electrónico  ROHM [Rohm]
Página de inicio  http://www.rohm.com
Logo ROHM - Rohm

BU9873NUX-TTR Datasheet(HTML) 6 Page - Rohm

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BU9873
TSZ02201-0919AGZ00010-1-2
© 2013 ROHM Co., Ltd. All rights reserved.
13.Sep.2013 REV.001
www.rohm.com
TSZ22111・15・001
AC Characteristics
Item
Symbol
VDD ≥1.8V
VDD ≥2.5V
Unit
Min
Typ
Max
Min
Typ
Max
SCL Clock Frequency
fSCL
0
100
0
400
kHz
SCL Clock “L” Time
tLOW
4.7
1.3
μs
SCL Clock “H” Time
tHIGH
4.0
0.6
μs
Start Condition Hold Time
tHD:STA
4.0
0.6
μs
Stop Condition Setup Time
tSU:STO
4.0
0.6
μs
Start Condition Setup Time
tSU:STA
4.7
0.6
μs
Data Setup Time
tSU:DAT
250
100
ns
“H” Data Hold Time
tHDH:DAT
0
0
ns
“L” Data Hold Time
tHDL:DAT
35
35
ns
SDA “L” Stable Time After Falling of SCL
tPL:DAT
2.0
0.9
μs
SDA Off Stable Time After Falling of SCL
tPZ:DAT
2.0
0.9
μs
Rising Time of SCL and SDA (Input)
tR
1000
300
ns
Falling Time of SCL and SDA (Input)
tF
300
300
ns
Spike Width that can be Filtered
tSP
50
50
ns
Unless additional specified: VSS=0V, Topt=-40°C to +85°C
(Note1) Not 100% TESTED Condition
Input data level: VIL=0.2×VDD
VIH=0.8×VDD
Input data timing reference level: 0.3×VDD/0.7×VDD
Output data timing reference level: 0.3×VDD/0.7×VDD
Rise/Fall time: ≦20ns
Figure 5. Input and output timing
Figure 6. Start and stop condition
SDA
tSU:STA
tSU:STO
tHD:STA
START BIT
STOP BIT
SCL
SDA
(INPUT)
SDA
tHD:STA
tHD:DAT
tSU:DAT
tPL:DAT
tPZ:DAT
tLOW
tHIGH
tR
tF
SCL
(OUTPUT)


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