SPC56ECxx datasheet(69/123 Pages) STMICROELECTRONICS

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SPC564Bxx-SPC56ECxx

Electrical Characteristics

122

3.8.3

Voltage monitor electrical characteristics

The device implements a Power-on Reset module to ensure correct power-up initialization,

as well as four low voltage detectors to monitor the VDD_HV_A and the VDD_LV voltage while

device is supplied:



POR monitors VDD_HV_A during the power-up phase to ensure device is maintained in

a safe reset state



LVDHV3 monitors VDD_HV_A to ensure device is reset below minimum functional

supply



LVDHV5 monitors VDD_HV_A when application uses device in the 5.0 V±10 % range



LVDLVCOR monitors power domain No. 1 (PD1)



LVDLVBKP monitors power domain No. 0 (PD0). VDD_LV is same as PD0 supply.

Note:

When enabled, PD2 (RAM retention) is monitored through LVD_DIGBKP.

IMREG

—

Main regulator current provided to

VDD_LV domain

——

—

350

IMREGINT

Main regulator module current

consumption

IMREG = 200 mA

—

IMREG = 0 mA

—

VLPREG

Low power regulator output

voltage

After trimming

TA = 25 °C

1.17

1.27

1.32

ILPREG

—

Low power regulator current

provided to VDD_LV domain

—

——

ILPREGINT

Low power regulator module

current consumption

ILPREG = 15 mA;

TA = 55 °C

——

600

A

—

ILPREG = 0 mA;

TA = 55 °C

—

IVREGREF

Main LVDs and reference current

consumption (low power and main

regulator switched off)

TA = 55 °C

—

A

IVREDLVD12

Main LVD current consumption

(switch-off during standby)

TA = 55 °C

—

A

IDD_HV_A

In-rush current on VDD_BV during

power-up

——

—

600

(3)

VDD_HV_A = 3.3 V ± 10 % / 5.0 V ± 10 %, TA = 40 to 125 °C, unless otherwise specified.

All values need to be confirmed during device validation.

Inrush current is seen more like steps of 600 mA peak. The startup of the regulator happens in steps of 50 mV in ~25 steps

to reach ~1.2 V VDD_LV. Each step peak current is within 600 mA

Table 23. Voltage regulator electrical characteristics (continued)

Symbol

Parameter

Conditions(1)

Value(2)

Unit

Min

Typ

Max

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