L5961

Functionality details

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Functionality details

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Provides three basic states:

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Zero power mode

All external HW is switched off. PM-chip is switched Off except "REG1 voltage

regulator", "Switch-to-power-pulse comparator" and "Control logic".

–

Ultra zero power mode

All external HW is switched off. PM-chip is switched Off except "ON/OFF Control

logic". PMD can be woken up to reach "Zero current mode" by activities on

DIAG_I/O line

–Normal

PMD and external HW is powered. One of the four possible wake-up conditions

occurs and the wake-up event is confirmed either by means of PWROFF pin or

To confirm the on-event:

- PWROFF pin must be driven low OR

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Reacts on four different wake-up events

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Switch to power pulse (STPP)

–

Light ON (for status)

–

Activity on Diag_I/O

–

ON/OFF switch

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Generation of switch to power pulse (STPP)

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Online battery monitoring, reacts on battery changes/ events:

–

Over voltage

–

Critical voltage

–

Under voltage

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Hardware watchdog triggered with discrete input, available to monitor the activity of the

controller

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Fail-safe behavior:

–

Intrinsic filtering time of wake-up events

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Protection against software caused failures

–

Over-temperature warning / thermal protection

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Diagnostic transceiver compatible to standard LIN2.0