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BLUENRG-2 Datasheet(PDF) 175 Page - STMicroelectronics

Part # BLUENRG-2
Description  Bluetooth® low energy wireless system-on-chip
PDF  190 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

BLUENRG-2 Datasheet(HTML) 175 Page - STMicroelectronics

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BlueNRG-2
Electrical specifications
DocID030675 Rev 2
175/190
only for an easier matching of the load capacitance C0, but also to ensure robustness
against noise injection. Connect each capacitor of the Xtal oscillator to ground by a
separate vias.
9.6
Low speed crystal oscillator characteristics
Characteristics measured over recommended operating conditions unless otherwise
specified. Typical value are referred to TA = 25 °C, VBAT =3.0 V.
Table 223: Low speed crystal oscillator characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
fNOM
Nominal
frequency
–
32.768
–
kHz
fTOL
Frequency
tolerance
Includes initial accuracy, stability over
temperature, aging and frequency
pulling due to incorrect load
capacitance.
–
–
±50
ppm
ESR
Equivalent
series
resistance
–
–
90
kΩ
PD
Drive level
–
–
0.1
µW
These values are the correct ones for NX3215SA-32.768 kHz-EXS00A-MU00003.
9.7
High speed ring oscillator characteristics
Characteristics measured over recommended operating conditions unless otherwise
specified. Typical value are referred to TA = 25 °C, VBAT =3.0 V, QFN32 package version.
Table 224: High speed ring oscillator characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
fNOM
Nominal frequency
WLCSP34
–
14
–
MHz
QFN32
–
13.6
–
9.8
Low speed ring oscillator characteristics
Characteristics measured over recommended operating conditions unless otherwise
specified. Typical value are referred to TA = 25 °C, VBAT =3.0 V, QFN32 package version.
Table 225: Low speed ring oscillator characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
32 kHz ring oscillator (LSROSC)
fNOM
Nominal frequency
–
37.4
–
kHz
fTOL
Frequency tolerance
–
–
±500
ppm



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