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ATA6842-PLSW Datasheet(PDF) 25 Page - ATMEL Corporation

Part # ATA6842-PLSW
Description  Automotive Failsafe System IC
PDF  29 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATA6842-PLSW Datasheet(HTML) 25 Page - ATMEL Corporation

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25
4964B–AUTO–07/07
ATA6842
7.13
External Voltage Regulator VRE
The ATA6842 can control an external voltage regulator with enable input. The VRE output pro-
vides the same logic as for the V5 regulator (see Table 7-9). For V5 voltage monitoring, the
external generated voltage must be connected to V5.
Table 7-9.
Logic Table
Event
VI
V5
VRE
V5A
SPI
Info
WLN
RD1 to
RD4
RESN
RESAN
V12S
OUTx
x=N,P
TCFET
Standby
Off
Off
On
–
Off
Off
–
No reset
Off
Off
Off
V12 undervoltage
On
Off
Off
No
Off
Off
Reset
Reset
Off
Off
Off
VI undervoltage
On
Off
On
No
Off
Off
Reset
No reset
Off
Off
Off
VI overvoltage
On
Off
On
No
On
Off
Reset
No reset
Off
Off
Off
Oscillator/bias failure
On
Off
Off
No
On
Off
Reset
Reset
Off
Off
Off
V12 overvoltage
On
Off
Off
No
On
Off
Reset
Reset
Off
Off
Off
Upper thermal threshold
On
On
On
Yes
On(4)
Off
Reset
Reset
Off(5)
Off
Off
Reset by RSTN
On
On
On
No
On
Off
No reset
No reset
Off
Off
Off
V5 out of range
On
On
On
No
On
Off
Reset
No reset
Off
Off
Off
V5A out of range
On
On
On
No
On
Off
No reset
Reset
Off
Off
Off
Short circuit WLN
(overcurrent)
On
On
On
Yes
Off(1)
On/Off
No reset
No reset
On/Off
On/Off
On/Off
Short circuit OUTx
(overcurrent)
On
On
On
Yes
Off
On/Off
No reset
No reset
On/Off
On/Off(1)
On/Off
Watchdog error
On
On
On
Yes
On
Off
No reset
No reset
On/Off
Off
Off
Off mode
–
–
–
–
–
Perm(3)
––
Temp(2)
Temp
Perm
Note:
1. Corresponding driver is switched off if thermal threshold number 1 is reached
2. Temp = temporary state, recovery when event condition is removed, except VI out of over-/undervoltage, thermal threshold
number 2 reached or reset by RSTN
3. Perm = permanent state, no recovery when event condition is removed, must be re-engaged by SPI command
4. If no overcurrent in WLN
5. Not testable



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