FS32K142HAT0MLHT datasheet(29/84 Pages) NXP

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Single input comparator

(EXTAL WAVE)

Mux

ref_clk

Differential input comparator

(HG/LP mode)

Peak detector

LP mode

Driver

(HG/LP mode)

Pull down resistor (OFF)

ESD PAD

280 ohms

ESD PAD

40 ohms

EXTAL pin

XTAL pin

Series resistor for current

limitation

Crystal or resonator

1M ohms Feedback Resistor

Figure 8. Oscillator connections scheme

Table 17. External System Oscillator electrical specifications

Symbol

Description

Min.

Typ.

Max.

Unit

Notes

gmXOSC

Crystal oscillator transconductance

SCG_SOSCCFG[RANGE]=2'b10 for 4-8 MHz

2.2

—

13.7

mA/V

SCG_SOSCCFG[RANGE]=2'b11 for 8-40 MHz

—

mA/V

VIL

Input low voltage — EXTAL pin in external clock mode

VSS

—

1.15

VIH

Input high voltage — EXTAL pin in external clock

mode

0.7 * VDD

—

VDD

EXTAL load capacitance

—

XTAL load capacitance

—

Feedback resistor

Low-gain mode (HGO=0)

—

MΩ

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Clock interface modules

S32K1xx Data Sheet, Rev. 9, 09/2018

NXP Semiconductors

FS32K142HAT0MLHT 数据表(PDF) 29 Page - NXP Semiconductors

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