MPC5644BCAMMJ1 datasheet(56/116 Pages) NXP

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MPC5646C Microcontroller DataSheet, Rev. 7

Electrical Characteristics

NXP Semiconductors

4.8.3

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.

VLPREG

CC P Low power regulator output voltage

After trimming

TA = 25 °C

1.21

1.27

—

ILPREG

SR — Low power regulator current

provided to VDD_LV domain

—

——

ILPREGINT

CC D Low power regulator module current

consumption

ILPREG = 15 mA;

TA = 55 °C

——

600

μA

—

ILPREG = 0 mA;

TA = 55 °C

—

IVREGREF

CC D Main LVDs and reference current

consumption (low power and main

regulator switched off)

TA = 55 °C

—

μA

IVREDLVD12 CC D Main LVD current consumption

(switch-off during standby)

TA = 55 °C

—

μA

IDD_HV_A

CC D In-rush current on VDD_BV during

power-up

——

—

6003

1 V

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

2 All values need to be confirmed during device validation.

3 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 22. Voltage regulator electrical characteristics (continued)

Symbol

Parameter

Conditions1

Value2

Unit

Min

Typ

Max

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