MIMXRT8024DVL4A datasheet(30/103 Pages) NXP

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Table 18. USB PLL’s electrical parameters (continued)

Parameter

Value

Reference clock

24 MHz

Lock time

< 383 reference cycles

4.2.4 Arm PLL

Table 19. Arm PLL’s electrical parameters

Parameter

Value

Clock output range

648 MHz ~ 1296 MHz

Reference clock

24 MHz

Lock time

< 2250 reference cycles

4.2.5 On-chip oscillators

4.2.5.1 OSC24M

This block implements an amplifier that when combined with a suitable quartz crystal and external load capacitors implement an

oscillator. The oscillator is powered from NVCC_PLL.

The system crystal oscillator consists of a Pierce-type structure running off the digital supply. A straight forward biased-inverter

implementation is used.

4.2.5.2 OSC32K

This block implements an amplifier that when combined with a suitable quartz crystal and external load capacitors implement a low

power oscillator. It also implements a power mux such that it can be powered from either a ~3 V backup battery (VDD_SNVS_IN)

or VDD_HIGH_IN such as the oscillator consumes power from VDD_HIGH_IN when that supply is available and transitions to the

backup battery when VDD_HIGH_IN is lost.

In addition, if the clock monitor determines that the OSC32K is not present, then the source of the 32 K will automatically switch to

a crude internal ring oscillator. The frequency range of this block is approximately 10–45 kHz. It highly depends on the process,

voltage, and temperature.

The OSC32k runs from VDD_SNVS_CAP supply, which comes from the VDD_HIGH_IN/VDD_SNVS_IN. The target battery is a

~3 V coin cell. Proper choice of coin cell type is necessary for chosen VDD_HIGH_IN range. Appropriate series resistor (Rs) must

be used when connecting the coin cell. Rs depends on the charge current limit that depends on the chosen coin cell. For example,

for Panasonic ML621:

• Average Discharge Voltage is 2.5 V

• Maximum Charge Current is 0.6 mA

For a charge voltage of 3.2 V, Rs = (3.2-2.5)/0.6 m = 1.17 k.

NXP Semiconductors

Electrical Characteristics

i.MX RT1060X Crossover Processors for Extended Products , Rev. 1, 06/2022

Data Sheet: Technical Data

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