Datasheet

Table 32-18. Actual PLL Frequency (continued)
PLL Frequency
(MHz)
Reference
Frequency
(MHz)
b
NMINT (Hexadecimal
Value)
MINT (Decimal
Value)
Crystal
Frequency
(MHz)
32050x40x406425
48050x00x60965
48060x00x50806
48080x00x3C608
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.
32.9.2 PIOSC Specifications
Table 32-19. PIOSC Clock Characteristics
UnitMaxNomMinParameter NameParameter
-±3%
b
--Internal 16-MHz precision oscillator frequency variance
(factory calibrated at 25 °C and 3.3 V) across the
specified voltage and temperature range
a
F
PIOSC
µs1--PIOSC startup time
c
T
START
a. This parameter value remains valid if recalibration occurs.
b. ±3% can only be met with VDD±5%.
c. PIOSC startup time is part of reset and is included in the internal reset timeout value (T
IRTOUT
) given in Table
32-14 on page 2112. Note that the T
START
value is based on simulation.
32.9.3 Low-Frequency Internal Oscillator Specifications
Table 32-20. Low-Frequency Oscillator Characteristics
UnitMaxNomMinParameter NameParameter
KHz90
a
3310
a
Internal low-frequency oscillator
frequency
F
LFIOSC
a. Preliminary, pending characterization.
32.9.4 Hibernation Clock Source Specifications
Table 32-21. Hibernation Internal Low Frequency Oscillator Clock Characteristics
UnitMaxNomMinParameter NameParameter
KHz903310Internal Low Frequency Hibernation
oscillator frequency
F
HIBLFIOSC
2117December 13, 2013
Texas Instruments-Advance Information
Tiva
™
TM4C129XNCZAD Microcontroller