Texas Instruments SimpleLink CC2652RB, Руководство пользователя

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8.14.3 Clock Specifications
8.14.3.1 48 MHz Bulk Acoustic Wave (BAW) Oscillator
Measured on CC26x2RBEM-7ID reference design with T
c
= 25 °C, V
DDS
= 3.0 V, unless otherwise noted.
PARAMETER MIN TYP MAX UNIT
Clock frequency
(1)
48 MHz
Compensated clock frequency for RF PLL and Modem
(2)
-40 40 ppm
Start-up time
(3)
80 µs
(1) Compensated clock frequency used by RF PLL and Modem. Non-RF domain (MCU and Peripherals) uncompensated frequency has
variation upto +/- 0.4% in offset and +/- 200 ppm across temperature.
(2) Across operational temperature range, including 10 year aging at 30°C. Compensation parameters are measured in TI production and
stored in device for clock compensation.
(3) Start-up time using the TI-provided power driver.
8.14.3.2 48 MHz Crystal Oscillator (XOSC_HF)
Measured on a Texas Instruments reference design with T
c
= 25 °C, V
DDS
= 3.0 V, unless otherwise noted.
(1)
PARAMETER MIN TYP MAX UNIT
Crystal frequency 48 MHz
ESR
Equivalent series resistance
6 pF < C
L
≤ 9 pF
20 60 Ω
ESR
Equivalent series resistance
5 pF < C
L
≤ 6 pF
80 Ω
L
M
Motional inductance, relates to the load capacitance that is used for the
crystal (C
L
in Farads)
(5)
< 3 × 10
–25
/ C
L
2
H
C
L
Crystal load capacitance
(4)
5 7
(3)
9 pF
Start-up time
(2)
200 µs
(1) Probing or otherwise stopping the crystal while the DC/DC converter is enabled may cause permanent damage to the device.
(2) Start-up time using the TI-provided power driver. Start-up time may increase if driver is not used.
(3) On-chip default connected capacitance including reference design parasitic capacitance. Connected internal capacitance is changed
through software in the Customer Configuration section (CCFG).
(4) Adjustable load capacitance is integrated into the device.
(5) The crystal manufacturer's specification must satisfy this requirement for proper operation.
8.14.3.3 48 MHz RC Oscillator (RCOSC_HF)
Measured on a Texas Instruments reference design with T
c
= 25 °C, V
DDS
= 3.0 V, unless otherwise noted.
MIN TYP MAX UNIT
Frequency 48 MHz
Uncalibrated frequency accuracy ±1 %
Calibrated frequency accuracy
(1)
±0.25 %
Start-up time 5 µs
(1) Accuracy relative to the calibration source (XOSC_HF)
8.14.3.4 2 MHz RC Oscillator (RCOSC_MF)
Measured on a Texas Instruments reference design with T
c
= 25 °C, V
DDS
= 3.0 V, unless otherwise noted.
MIN TYP MAX UNIT
Calibrated frequency 2 MHz
Start-up time 5 µs
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CC2652RB
SWRS232D – FEBRUARY 2019 – REVISED FEBRUARY 2021
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