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EZR32LG230 Datasheet, PDF (27/87 Pages) Silicon Laboratories – Building and home automation | |||
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4.10.2 HFXO
Table 4.11. HFXO
Parameter
Symbol
Test Condition
Min
Supported nominal crystal
fHFXO
4
Frequency
Crystal frequency 48 MHz
â
Supported crystal equivalent
series resistance (ESR)
ESRHFXO
Crystal frequency 32 MHz
â
Crystal frequency 4 MHz
â
The transconductance of the
gmHFXO HFXOBOOST in CMU_CTRL equals
20
HFXO input transistor at crys-
0b11
tal startup
Supported crystal external
load range
CHFXOL
5
Duty cycle
DCHFXO
46
Current consumption for
HFXO after startup
4 MHz: ESR=400 Ohm, CL=20 pF,
â
HFXOBOOST in CMU_CTRL equals
0b11
IHFXO
32 MHz: ESR=30 Ohm, CL=10 pF,
â
HFXOBOOST in CMU_CTRL equals
0b11
Startup time
tHFXO
32 MHz: ESR=30 Ohm, CL=10 pF,
â
HFXOBOOST in CMU_CTRL equals
0b11
EZR32LG230 Data Sheet
Electrical Specifications
Typ
Max
Unit
â
48
MHz
â
50
Ω
30
60
Ω
400
1500
Ω
â
â
ms
â
25
pF
50
54
%
85
â
µA
165
â
µA
400
â
µs
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