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L9300 Datasheet(PDF) 83 Page - STMicroelectronics

Part # L9300
Description  Automotive flexible U-chip for braking and transmission
PDF  182 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9300 Datasheet(HTML) 83 Page - STMicroelectronics

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Figure 49. Reset-Latch timing diagram
VBATP
POR
WAKE
Reset due to WD_fault
RES1
Clear
Clear
RES1_LATCH signal is forced “high”
by 4 count of WD_fault generation
Clear
Clear
Clear
Clear
Clear
Clear
WD_fault-counter
RES1/LATCH
GADG0408171001PS
13.2
PRUN watchdog electrical characteristics
5.5V ≤ VBATP ≤ 19V; -40°C ≤ Tj ≤ 175°C unless otherwise noticed. All voltages refer to GND pin.
Table 50. PRUN WD electrical characteristics
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
Pin
Input Pin
Vil(PRN)
Low Input Voltage
-
0.75
V
PRN
Vih(PRN)
High Input Voltage
1.75
V
PRN
Ipd(PRN)
Pull-down Input Current
PRN = 5 V
10
50
100
µA
PRN
Vil(WD_DIS)
Low Input Voltage
0.75
V
WD_DIS
Vih(WD_DIS)
High Input Voltage
1.75
V
WD_DIS
Ipd(WD_DIS)
Pull-down Input Current
WD_DIS = 5 V
10
50
100
µA
WD_DIS
PRUN Timings
Toff_to
Timeout at power up
Guaranteed by scan
230
300
370
ms
PRN
Toff
Clock off reset time
Guaranteed by scan
11
16
ms
PRN
TRL
Reset pulse low time
Guaranteed by scan
1
1.25
ms
RES1
TRH
Reset pulse high time
Guaranteed by scan
230
300
370
ms
RES1
FreqH
PRUN Over Frequency Detection
Guaranteed by scan
1
kHz
PRN
L9300
PRUN watchdog electrical characteristics
DS12258 - Rev 4
page 83/182



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