MPC5645B datasheet(57/114 Pages) FREESCALE

57 / 114 page

MPC5646C Microcontroller Data Sheet, Rev. 3

Preliminary—Subject to Change Without Notice

Freescale Semiconductor

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.

ILPREGINT

CC D Low power regulator module current

consumption

ILPREG = 15 mA;

TA = 55 °C

——

600

A

—

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

—

A

IVREDLVD12 CC D Main LVD current consumption

(switch-off during standby)

TA = 55 °C

—

A

IDD_HV_A

CC D In-rush current on VDD_HV_A

3 during

power-up

——

—

6004

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 Assumption is V

DD_HV_A is now supplying the external ballast. This current is the ballast inrush current.

4 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

MPC5645B Datasheet(PDF) 57 Page - Freescale Semiconductor, Inc

MPC5645B Datasheet(HTML) 57 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Descarga

Enlace URL