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| CC1350_16 Datasheet, PDF (26/61 Pages) Texas Instruments – SimpleLink Ultra-Low-Power Dual-Band Wireless MCU | |||
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CC1350
SWRS183A â JUNE 2016 â REVISED NOVEMBER 2016
www.ti.com
5.21.3 Clock Specifications
5.21.3.1 24-MHz Crystal Oscillator (XOSC_HF)
Measured on the Texas Instruments CC1310EM-7XD-7793 reference design with Tc = 25°C, VDDS = 3.0 V, unless otherwise
noted. (1)
MIN
TYP
MAX
UNIT
Crystal frequency
24
MHz
ESR equivalent series resistance
20
60
Ω
LM motional inductance, relates to the load capacitance that is used for the
crystal (CL in Farads)
CL crystal load capacitance
Start-up time(2)
< 1.6 Ã 10â24 / CL 2
H
5
150
9
pF
µs
(1) Probing or otherwise stopping the crystal while the DC-DC converter is enabled may cause permanent damage to the device.
(2) The crystal start-up time is low because it is kick-started by using the RCOSC_HF oscillator (temperature and aging compensated) that
is running at the same frequency.
5.21.3.2 32.768-kHz Crystal Oscillator (XOSC_LF)
Measured on the Texas Instruments CC1310EM-7XD-7793 reference design with Tc = 25°C, VDDS = 3.0 V, unless otherwise
noted. (1)
MIN
TYP
MAX UNIT
Crystal frequency
32.768
kHz
ESR equivalent series resistance
30
100
kΩ
Crystal load capacitance (CL)
6
12
pF
(1) Probing or otherwise stopping the crystal while the DC-DC converter is enabled may cause permanent damage to the device.
5.21.3.3 48-MHz RC Oscillator (RCOSC_HF)
Measured on the Texas Instruments CC1310EM-7XD-7793 reference design with Tc = 25°C, VDDS = 3.0 V, unless otherwise
noted.
MIN
TYP
MAX UNIT
Frequency
48
MHz
Uncalibrated frequency accuracy
Calibrated frequency accuracy(1)
±1%
±0.25%
Startup time
5
µs
(1) Accuracy relative to the calibration source (XOSC_HF)
5.21.3.4 32-kHz RC Oscillator (RCOSC_LF)
Measured on the Texas Instruments CC1310EM-7XD-7793 reference design with Tc = 25°C, VDDS = 3.0 V, unless otherwise
noted.
Calibrated frequency(1)
MIN
TYP
32.768
MAX
UNIT
kHz
Temperature coefficient
50
ppm/°C
(1) The frequency accuracy of the Real Time Clock (RTC) is not directly dependent on the frequency accuracy of the 32-kHz RC Oscillator.
The RTC can be calibrated to an accuracy within ±500 ppm of 32.768 kHz by measuring the frequency error of RCOSC_LF relative to
XOSC_HF and compensating the RTC tick speed.
26
Specifications
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