AS1163 datasheet(48/91 Pages) AMSOSRAM

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AS1163

Functional description

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DS001075 • v2-00 • 2025-Nov-21

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6.11.1

Undervoltage failure

Sets STATUS.UV_FLAG (bit 0) when there is an under voltage event.

The event takes place with VDD_UV. If VDD falls below the VDD_UV threshold, the

corresponding flag bit will be set after a de-glitch time. The flag bit will be deleted when the

Status Register is requested by host and VDD is recovered to VDD>VDD_UV.

6.11.2

Overvoltage failure

In case the internal regulator fails (an unlikely and rare event) resulting in an over-voltage

condition for the internal circuitry being supplied by it, an over-voltage monitor provides a flag

to enable detection. Such conditions can be dangerous, as oscillator and digital circuitry can

suffer reduced lifetime and failure while operating above maximum absolute limits.

This flag can be used at system level to react accordingly and implement functional safety

measures.

This event sets STATUS.OV_FLAG (bit 4).

The flag is cleared upon read-out of the status register and is raised again if the condition

persists.

When a SAID comes out of RESET, its OV_FLAG is always set. It is advised to broadcast a

CLRERROR or perform an individual READSTAT / READTEMPSTAT after RESET and INIT.

6.11.3

Overtemperature failure

Sets STATUS.OT_FLAG (bit 1) when an overtemperature event occurs.

The temperature level and relative hysteresis is defined in Table 4 and it is required to avoid

thermal overstress of the IC. The flag bit will be deleted when the Status Register is requested

by host and temperature is lower than the hysteric value.

Refer to commands SETOTTH, READOTTH for accessing the overtemperature threshold

AS1163 Datasheet(PDF) 48 Page - ams-OSRAM AG