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L9679E Datasheet(PDF) 99 Page - STMicroelectronics

Part # L9679E
Description  Automotive battery cut-off circuit and airbag system expansion IC
PDF  127 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9679E Datasheet(HTML) 99 Page - STMicroelectronics

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Table 22. Internal regulators AC specifications
Symbol
Parameter
Comments / Conditions
Min
Typ
Max
Unit
TFLT_ VINT_CVDD_OV
Internal regulator over voltage
deglitch filter time
-
10
17
25
µs
TFLT_VINT_CVDD_UV
Internal regulator under voltage
deglitch filter time
-
10
17
25
µs
13.4
Oscillators
All electrical characteristics are valid for the following conditions unless otherwise noted:
-40 °C ≤ Tamb ≤ +105 °C
VSAT_ON(max) ≤ VSAT ≤ VSAT(max)
Table 23. Oscillators AC specifications
Symbol
Parameter
Conditions / Comments
Min
Typ
Max
Unit
fOSC
Main oscillator average
frequency
-
15.2
16
16.8
MHz
fMOD_OSC
Main oscillator modulation
frequency
SPI_CLK_CNF
(MAIN_SS_DIS=0) Design
Info
fOSC(min)/128
fOSC(typ)/128
fOSC(max)/128
MHz
IMOD_OSC
Main oscillator modulation
index
SPI_CLK_CNF
(MAIN_SS_DIS=0)
2
4
6
%
fAUX
Aux oscillator average
frequency
-
7.125
7.5
7.875
MHz
fMOD_AUX
Aux oscillator modulation
frequency
SPI_CLK_CNF
(AUX_SS_DIS=0) Design
Info
fAUX(min)/128
fAUX(typ)/128
fAUX(max)/128
MHz
IMOD_AUX
Aux oscillator modulation
index
SPI_CLK_CNF
(AUX_SS_DIS=0)
2
4
6
%
fOSC_LOW_TH
Main oscillator low
frequency detection
threshold
-
fAUX(min)*(128/174) fAUX(typ)*(128/174) fAUX(max)*(128/174) MHz
L9679E
Electrical characteristics
DS12485 - Rev 8
page 99/127



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