MSP432P411VIPZ datasheet(52/212 Pages) TI1

52 / 212 page

MSP432P4111, MSP432P4011, MSP432P411Y

MSP432P401Y, MSP432P411V, MSP432P401V

SLASEA0A – DECEMBER 2017 – REVISED FEBRUARY 2018

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Product Folder Links: MSP432P4111 MSP432P4011 MSP432P411Y MSP432P401Y MSP432P411V MSP432P401V

Specifications

Table 5-9. Low-Frequency Crystal Oscillator, LFXT (continued)

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

(6)

This represents all the parasitic capacitance present at the LFXIN and LFXOUT terminals, respectively, including parasitic bond and

package capacitance. The effective load capacitance, CL,eff can be computed as CIN × COUT / (CIN + COUT), where CIN and COUT are the

total capacitance at the LFXIN and LFXOUT terminals, respectively.

(7)

Requires external capacitors at both terminals to meet the effective load capacitance specified by crystal manufacturers. Recommended

effective load capacitance values supported are 3.7 pF, 6 pF, 9 pF, and 12 pF. Maximum shunt capacitance of 1.6 pF. Because the

PCB adds additional capacitance, it must also be considered in the overall capacitance. Verify that the recommended effective load

capacitance of the selected crystal is met.

(8)

Does not include programmable start-up counter.

(9)

Frequencies greater than the MAX specification do not set the fault flag. Frequencies between the MIN and MAX specification may set

the flag. A static condition or stuck-at-fault condition sets the fault flag.

(10) Measured with logic-level input frequency but also applies to operation with crystals.

CLFXIN

Integrated load capacitance at

LFXIN terminal(6) (7)

CLFXOUT

Integrated load capacitance at

LFXOUT terminal(6) (7)

tSTART,LFXT Start-up time

(8)

fOSC = 32.768 kHz,

LFXTBYPASS = 0, LFXTDRIVE = {0},

CL,eff = 3.7 pF, Typical ESR, CSHUNT,

FCNTLF_EN = 0(2)

3.0 V

1.1

fOSC = 32.768 kHz,

LFXTBYPASS = 0, LFXTDRIVE = {3},

CL,eff = 12 pF, Typical ESR, CSHUNT,

FCNTLF_EN = 0(2)

1.3

fFault,LFXT

Oscillator fault frequency(9) (10)

kHz

Table 5-10 lists the input requirements for the high-frequency crystal oscillator, HFXT.

Table 5-10. High-Frequency Crystal Oscillator, HFXT, Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ESR

Crystal equivalent series resistance

fOSC = 1 MHz to ≤ 4 MHz

150

Ω

fOSC = > 4 MHz to ≤ 8 MHz

150

fOSC = > 8 MHz to ≤ 16 MHz

fOSC = > 16 MHz to ≤ 24 MHz

fOSC = > 24 MHz to ≤ 32 MHz

fOSC = > 32 MHz to ≤ 48 MHz

CHFXT

Capacitance from HFXT input to ground

and from HFXT output to ground

fOSC = 1 MHz to 48 MHz

CSHUNT

Crystal shunt capacitance

fOSC = 1 MHz to 48 MHz

Crystal motional capacitance

fOSC = 1 MHz to 48 MHz

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