IMX8MPCEC datasheet(31/111 Pages) NXP

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Electrical characteristics

i.MX 8M Plus Applications Processor Datasheet for Consumer Products, Rev. 0, 03/2021

NXP Semiconductors

3.1.6.2

On-chip OSC24M

This block implements an amplifier that when combined with a suitable 24 MHz external quartz crystal

and external load capacitors implements an oscillator. The oscillator is powered from

VDD_24M_XTAL_1P8.

3.1.7

Estimated power supply maximum currents

Power consumption is highly dependent on the application. The table below represents the estimated

maximum current on the power supply rails and should be used as a guideline for power supply selection.

The data below is based on a combination of design simulation and characterization data based on typical

datasheet voltages. Actual power consumption for typical use cases are lower than values presented on the

table below.

Table 18. 24M rystal specifications

Parameter Description

Min

Typ

Max

Unit

Frequency

—

MHz

Cload1

1 CL is the load capacitance of the crystal that is recommended by the crystal vendors to obtain target clock frequency. CL is

given by the following formula: CL = {CL1 x CL2 / (CL1 + CL2)} + PCB strays

—12

—

Drive level2

2 Actual working drive level is depend on real design. Please contact crystal vendor for selecting drive level of crystal.

——

100

µW

ESR3

3 ESR is the equivalent series resistance of the crystal.

—60

—

Rf (feedback resistor)4

4 Rf is the feedback resistor to bias the amplifier. A larger value of Rf is preferred at lower frequencies.

500

—



Rs (series resistor)5

5 Rs is the series resistor to limit amplifier gain and reduce power dissipation in the crystal.

0—

500



Table 19. Estimated power supply maximum currents (Sheet 1 of 2)

Power rail

Max current

Unit

VDD_ARM

2200

VDD_SOC

5000

Misc_0P81

330

Misc_1P81

300

VDD_USB_3P3

NVCC_SNVS_1P8

DRAM_VREF

µA

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