PIMXRT516SCVJ2A datasheet(43/128 Pages) NXP

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Electrical characteristics

i.MX RT1170 Crossover Processors Data Sheet for Consumer Products, Rev. 1, 05/2021

NXP Semiconductors

4.2.6

On-chip oscillators

The system oscillator (SYS OSC) is a crystal oscillator. The SYS OSC, in conjunction with an external

crystal or resonator, generates a reference clock for this chip. It also provides the option for an external

input clock to XTALI signal directly.

Each i.MX RT1170 processor has two external input system clocks: a low frequency (RTC_XTALI) and

a high frequency (XTALI).

The RTC_XTALI is used for low-frequency functions. It supplies the clock for wake-up circuit,

power-down real time clock operation, and slow system and watch-dog counters. The clock input can be

Period jitter (p2p)

—

Duty cycle

—

Table 28. System oscillator frequency specifications

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

IVDDA (Low power mode) Analog supply current

24 MHz

—

0.5

—

IVDDA (High gain mode) Analog supply current

24 MHz

—

1.3

—

Feedback resistor

Low-power mode

No need

High-gain mode

—



Series resistor1

1 Depends on the drive level of external crystal device

——

—



CXCY

XTALI/XTALO load capacitance

See crystal or resonator manufacture’s recommendation

Cpara

Parasitically capacitance of

XTALI and XTALO

—

1.5

2.0

Clock output

FOSC

Oscillator crystal or resonator

frequency

——

—

MHz

tdcy

Duty-cycle of the output clock

—

Dynamic parameters

VPP

Peak-peak amplitude of

oscillation

Low-power mode

—

0.8

—

High gain mode

0.75x

VDDA_

1P8_IN

0.8 x

VDDA_

1P8_IN

—V

tstart

Start-up time

24 MHz low-power

mode

—250

—

s

24 MHz high-gain

mode

—250

—

s

Table 27. Arm PLL’s electrical parameters (continued)

Parameter

Min

Typ

Max

Unit

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