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UJA1069 Datasheet(PDF) 16 Page - NXP Semiconductors

Part # UJA1069
Description  LIN fail-safe system basis chip
PDF  64 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

UJA1069 Datasheet(HTML) 16 Page - NXP Semiconductors

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UJA1069_2
© NXP B.V. 2007. All rights reserved.
Preliminary data sheet
Rev. 02 — 5 March 2007
16 of 64
NXP Semiconductors
UJA1069
LIN fail-safe system basis chip
Pin RSTN is monitored for a continuously clamped LOW situation. Once the SBC pulls pin
RSTN HIGH but pin RSTN level remains LOW for longer than tRSTN(CLT), the SBC
immediately enters Fail-safe mode since this indicates an application failure.
Fig 7.
Reset pin behavior
Fig 8.
Reset timing diagram
VRSTN
power-up
power-
down
under-
voltage
missing
watchdog
access
under-
voltage
spike
V1
time
time
Vrel(UV)(V1)
Vdet(UV)(V1)
coa054
tRSTNL
tRSTNL
tRSTNL
001aad181
RSTN
externally
forced LOW
RSTN externally forced LOW
time
time
VRSTN
VRSTN
tRSTNL
tWD(init)
tRSTNL
tWD(init)



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