I.MX93 datasheet(21/112 Pages) NXP

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Electrical characteristics

i.MX 93 Application Processors Data Sheet for Automotive Products, Rev. 3, 12/2023

NXP Semiconductors

The typical values shown in Table 16 are required for use with NXP software to ensure precise time

keeping and USB operation. When connecting external input clock to OSC32K, following connections are

recommended:

•

1.8 V square waveform to RTC_XTALI

•

RTC_XTALO is disconnected.

Table 16 shows the external input clock for OSC32K.

4.1.6.2

On-chip oscillators

A 24 MHz oscillator is used as the primary clock source for the PLLs to generate the clock for the CPU,

BUS, and high-speed interfaces. For fractional PLLs, the 24 MHz clock from the oscillator can be used as

the PLL reference clock directly.

Table 18 shows 32K oscillator specifications.

Table 15. External clock frequency

Parameter Description

Symbol

Low drive

mode

Nominal

mode

Overdrive

mode

Unit

EXT_CLK maximum frequency

fext_clk

133

200

MHz

Table 16. External input clock for OSC32K

Symbol

Min

Typ

Max

Unit

Frequency

—

32.768

—

kHz

RTC_XTALI

VIH

1.62

—

1.98

VIL

—

0.18

IIH

-12

—

µA

IIL

-12

—

µA

Table 17. 24M oscillator specifications1

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

Single-ended oscillator to XTAL 24 MHz is not supported.

Parameter Description

Min

Typ

Max

Unit

Frequency

—

MHz

Cload

—

Drive level

—

100

µW

ESR

—

120



Duty cycle

—

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