Datasheet

Electrical characteristics
i.MX 8QuadXPlus and 8DualXPlus Automotive and Infotainment Applications Processors, Rev. 0, 11/2018
PRELIMINARYNXP Semiconductors 31
Figure 2. Normal Crystal Oscillation mode
4.4.2 OSC32K
This block implements an internal amplifier, trimable load capacitors and a bias network that when
combined with a suitable quartz crystal implements a low power oscillator.
Additionally, if the clock monitor determines that the 32KHz oscillation is not present, then the source of
the 32 KHz clock will automatically switch to the internal relaxation oscillator of lesser frequency
accuracy.
Table 23. Crystal specifications
Parameter description Min Typ Max Unit
Frequency
1
1
The required frequency accuracy is set by the serial interfaces utilized for a specific application and is detailed in the respective
standard documents.
—24—MHz
Cload
2
2
Cload is the specification of the quartz element, not for the capacitors coupled to the quartz element.
—18—pF
Maximum drive level 200 — — μW
ESR — 50 — Ω