MSP432P401R_16 Datasheet, PDF (50/200 Pages) Texas Instruments – Mixed-Signal Microcontrollers

MSP432P401R, MSP432P401M
SLAS826E – MARCH 2015 – REVISED JULY 2016
www.ti.com
High-Frequency Crystal Oscillator, HFXT (continued)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
f_OSC = 1 MHz,
HFXTBYPASS = 0, HFXTDRIVE = 0,
HFFREQ = 0, C_L,eff = 16 pF,
Typical ESR and C_SHUNT,
FCNTHF_EN = 0
V_CC
MIN TYP MAX UNIT
4
f_OSC = 4 MHz,
HFXTBYPASS = 0, HFXTDRIVE = 1,
HFFREQ = 0, C_L,eff = 16 pF,
Typical ESR and C_SHUNT,
FCNTHF_EN = 0
f_OSC = 8 MHz,
HFXTBYPASS = 0, HFXTDRIVE = 1,
HFFREQ = 1, C_L,eff = 16 pF,
Typical ESR and C_SHUNT,
FCNTHF_EN = 0
1.8
ms
0.7
t_START,HFXT
Start-up time⁽⁴⁾
f_OSC = 16 MHz,
HFXTBYPASS = 0, HFXTDRIVE = 1,
HFFREQ = 2, C_L,eff = 16 pF,
0.6
Typical ESR and C_SHUNT,
FCNTHF_EN = 0
3.0 V
f_OSC = 24 MHz,
HFXTBYPASS = 0, HFXTDRIVE = 1,
HFFREQ = 3, C_L,eff = 16 pF,
450
Typical ESR and C_SHUNT,
FCNTHF_EN = 0
f_OSC = 32 MHz,
HFXTBYPASS = 0, HFXTDRIVE = 1,
HFFREQ = 4, C_L,eff = 16 pF,
Typical ESR and C_SHUNT,
FCNTHF_EN = 0
f_OSC = 40 MHz,
HFXTBYPASS = 0, HFXTDRIVE = 1,
HFFREQ = 5, C_L,eff = 16 pF,
Typical ESR and C_SHUNT,
FCNTHF_EN = 0
300
µs
250
f_OSC = 48 MHz,
HFXTBYPASS = 0, HFXTDRIVE = 1,
HFFREQ = 6, C_L,eff = 16 pF,
250
Typical ESR and C_SHUNT,
FCNTHF_EN = 0
C_HFXIN
Integrated load capacitance at
HFXIN terminal^{(5) (6)}
2
pF
C_HFXOUT
f_Fault,HFXT
Integrated load capacitance at
HFXOUT terminal^{(5) (6)}
Oscillator fault frequency^{(7) (8)}
2
pF
400
700 kHz
(4) Does not include programable start-up counter.
(5) This represents all the parasitic capacitance present at the HFXIN and HFXOUT terminals, respectively, including parasitic bond and
package capacitance. The effective load capacitance, CL,eff can be computed as CIN x COUT / (CIN + COUT), where CIN and COUT
is the total capacitance at the HFXIN and HFXOUT terminals, respectively.
(6) Requires external capacitors at both terminals to meet the effective load capacitance specified by crystal manufacturers. Recommended
effective load capacitance values supported are 14 pF, 16 pF, and 18 pF. Maximum shunt capacitance of 7 pF. Because the PCB adds
additional capacitance, it must also be considered in the overall capacitance. TI recommends verifying that the recommended effective
load capacitance of the selected crystal is met.
(7) Frequencies above the MAX specification do not set the fault flag. Frequencies in between the MIN and MAX might set the flag. A static
condition or stuck at fault condition will set the flag.
(8) Measured with logic-level input frequency but also applies to operation with crystals.
50
Specifications
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