Table 27-18. Actual PLL Frequency (continued)
PLL Frequency
(MHz)
Reference
Frequency
(MHz)
b
NMINT (Hexadecimal
Value)
MINT (Decimal
Value)
Crystal
Frequency
(MHz)
480100x00x304810
480120x00x284012
480160x00x1E3016
48060x20x508018
480200x00x182420
480240x00x142024
48050x40x609625
a. For all examples listed, Q=0
b. For a given crystal frequency, N should be chosen such that the reference frequency is within 4 to 30 MHz.
27.9.2 PIOSC Specifications
Table 27-19. PIOSC Clock Characteristics
UnitMaxNomMinParameter NameParameter
-±4.5%--Factory calibration, 0 to +105°C:
Internal 16-MHz precision oscillator frequency variance across
voltage and temperature range when factory calibration is used
F
PIOSC
-±10%--Factory calibration, -40°C to <0°C
-±1%--Recalibration:
Internal 16-MHz precision oscillator frequency variance when
recalibration is used at a specific temperature
µs1--PIOSC startup time
a
T
START
a. PIOSC startup time is part of reset and is included in the internal reset timeout value (T
IRTOUT
) given in Table
27-14 on page 1831. Note that the T
START
value is based on simulation.
27.9.3 Low-Frequency Internal Oscillator Specifications
Table 27-20. Low-Frequency Oscillator Characteristics
UnitMaxNomMinParameter NameParameter
KHz753310Internal low-frequency oscillator frequencyF
LFIOSC
27.9.4 Hibernation Clock Source Specifications
Table 27-21. Hibernation Internal Low Frequency Oscillator Clock Characteristics
UnitMaxNomMinParameter NameParameter
KHz903310Internal Low Frequency Hibernation
oscillator frequency
F
HIBLFIOSC
Table 27-22. Hibernation External Oscillator (XOSC) Input Characteristics
UnitMaxNomMinParameter NameParameter
KHz-32.768-Parallel resonance frequencyF
HIBXOSC
a
pF24-12External load capacitance on XOSC0, XOSC1 pins
b
C
1
, C
2
pF-0.5-Device package stray shunt capacitance
b
C
PKG
1837June 18, 2014
Texas Instruments-Production Data
Tiva
™
TM4C1294NCPDT Microcontroller
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