SPC560B64L5 datasheet(83/134 Pages) STMICROELECTRONICS

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SPC560B54/6x

Electrical characteristics

Doc ID 15131 Rev 6

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4.8.2

Low voltage detector electrical characteristics

The device implements a power-on reset (POR) module to ensure correct power-up

initialization, as well as five low voltage detectors (LVDs) to monitor the VDD and the VDD_LV

voltage while device is supplied:

●

POR monitors VDD during the power-up phase to ensure device is maintained in a safe

reset state (refer to RGM Destructive Event Status (RGM_DES) Register flag F_POR

in device reference manual)

●

LVDHV3 monitors VDD to ensure device reset below minimum functional supply (refer

to RGM Destructive Event Status (RGM_DES) Register flag F_LVD27 in device

reference manual)

●

LVDHV3B monitors VDD_BV to ensure device reset below minimum functional supply

(refer to RGM Destructive Event Status (RGM_DES) Register flag F_LVD27_VREG in

device reference manual)

●

LVDHV5 monitors VDD when application uses device in the 5.0 V ± 10% range (refer to

RGM Functional Event Status (RGM_FES) Register flag F_LVD45 in device reference

manual)

●

LVDLVCOR monitors power domain No. 1 (refer to RGM Destructive Event Status

(RGM_DES) Register flag F_LVD12_PD1 in device reference manual)

●

LVDLVBKP monitors power domain No. 0 (refer to RGM Destructive Event Status

(RGM_DES) Register flag F_LVD12_PD0 in device reference manual)

Note:

When enabled, power domain No. 2 is monitored through LVDLVBKP.

Figure 10.

Low voltage detector vs reset

VDD

VLVDHVxH

RESET

VLVDHVxL

SPC560B64L5 Datasheet(PDF) 83 Page - STMicroelectronics