MPC5601PEF0MLH4R datasheet(45/95 Pages) NXP

45 / 95 page

MPC5602P Microcontroller Data Sheet, Rev. 6

Freescale Semiconductor

•

LVDLVCOR monitors low voltage digital power domain

3.9

Power up/down sequencing

To prevent an overstress event or a malfunction within and outside the device, the MPC5602P implements the following

sequence to ensure each module is started only when all conditions for switching it ON are available:

•

A POWER_ON module working on voltage regulator supply controls the correct start-up of the regulator. This is a

key module ensuring safe configuration for all voltage regulator functionality when supply is below 1.5 V. Associated

POWER_ON (or POR) signal is active low.

•

Several low voltage detectors, working on voltage regulator supply monitor the voltage of the critical modules (voltage

regulator, I/Os, flash memory and low voltage domain). LVDs are gated low when POWER_ON is active.

•

A POWER_OK signal is generated when all critical supplies monitored by the LVD are available. This signal is active

high and released to all modules including I/Os, flash memory and 16 MHz RC oscillator needed during power-up

phase and reset phase. When POWER_OK is low the associated modules are set into a safe state.

Table 15. Low voltage monitor electrical characteristics

Symbol

Parameter

Conditions1

1 VDD = 3.3 V ± 10% / 5.0 V ± 10%, TA = 40 °C to TA MAX, unless otherwise specified

Value

Unit

Min

Max

VPORH

T Power-on reset threshold

—

1.5

2.7

VPORUP

P Supply for functional POR module

TA = 25 °C

1.0

—

VREGLVDMOK_H

P Regulator low voltage detector high threshold

—

2.95

VREGLVDMOK_L

P Regulator low voltage detector low threshold

—

2.6

—

VFLLVDMOK_H

P Flash low voltage detector high threshold

—

2.95

VFLLVDMOK_L

P Flash low voltage detector low threshold

—

2.6

—

VIOLVDMOK_H

P I/O low voltage detector high threshold

—

2.95

VIOLVDMOK_L

P I/O low voltage detector low threshold

—

2.6

—

VIOLVDM5OK_H

P I/O 5 V low voltage detector high threshold

—

4.4

VIOLVDM5OK_L

P I/O 5 V low voltage detector low threshold

—

3.8

—

VMLVDDOK_H

P Digital supply low voltage detector high

—

1.145

VMLVDDOK_L

P Digital supply low voltage detector low

—

1.08

—

MPC5601PEF0MLH4R Datasheet(PDF) 45 Page - NXP Semiconductors

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