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BLUENRG-LP 数据表(PDF) 47 Page - STMicroelectronics

部件名 BLUENRG-LP
功能描述  Programmable Bluetooth® Low Energy wireless SoC
PDF  72 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

BLUENRG-LP 数据表(HTML) 47 Page - STMicroelectronics

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5.3.10
Low speed crystal requirements
Low speed clock can be supplied with an external 32.768 kHz crystal oscillator. Requirements for the external
32.768 kHz crystal are reported in the table below.
Table 27. LSE crystal requirements
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
fNOM
Nominal frequency
32.768
kHz
ESR
Equivalent series resistance
90
kΩ
PD
Drive level
0.1
µW
5.3.11
High speed ring oscillator characteristics
Table 28. HSI oscillator characteristics
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
fNOM
Nominal frequency
64
MHz
5.3.12
Low speed ring oscillator characteristics
Table 29. LSI oscillator characteristics
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
fNOM
Nominal frequency
33
kHz
ΔFRO_ΔT/FRO
Frequency spread vs. temperature
Standard deviation
140
ppm/ºC
5.3.13
PLL characteristics
Characteristics measured over recommended operating conditions unless otherwise specified.
Table 30. PLL characteristics
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
PNSYNTH
RF carrier phase noise
At ±1 MHz offset from carrier
(measured at 2.4 GHz)
-110
dBc/Hz
At 2.4 GHz ±3 MHz offset from carrier
(measured at 2.4 GHz)
-114
dBc/Hz
At 2.4 GHz±6 MHz offset from carrier
(measured at 2.4 GHz)
-128
dBc/Hz
At ±25 MHz offset from carrier
-135
dBc/Hz
LOCKTIMETX
PLL lock time to TX
With calibration @2.5 ppm
150
µs
LOCKTIMERX
PLL lock time to RX
With calibration @2.5 ppm
110
µs
LOCKTIMERXTX
PLL lock time RX to TX
Without calibration @2.5 ppm
47
µs
LOCKTIMETXRX
PLL lock time TX to RX
Without calibration @2.5 ppm
32
µs
BlueNRG-LP
Operating conditions
DS13282 - Rev 2
page 47/72



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