Data Sheet
Table Of Contents
- Document information
- Contents
- 1 Functional description
- 2 Pin definition
- 3 Electrical specifications
- 4 Firmware
- 5 Mechanical specifications
- 6 RF design notes
- 7 Antenna patterns
- 8 BMD-360 evaluation development kit
- 9 Qualification and approvals
- 10 Environmental
- 11 Product handling
- 12 Labeling and ordering information
- 13 Life support and other high-risk use warning
- Related documents
- Revision history
- Contact
BMD-360 - Data sheet
UBX-19039466 - R03 Electrical specifications Page 12 of 31
3.6.1 32.768 kHz crystal (LFXO) (preliminary)
Symbol Parameter Typ. Max. Unit
F
NOM_LFXO
Crystal frequency 32.768 - kHz
F
TOL_LFXO_BLE
Frequency tolerance, Bluetooth low energy applications - ±500 ppm
f
TOL_LFXO_ANT
Frequency Tolerance, ANT applications - ±50 ppm
C
L_LFXO
Load Capacitance - 12.5 pF
C
0_LFXO
Shunt Capacitance - 2 pF
R
S_LFXO
Equivalent series resistance - 100 kΩ
C
pin
Input Capacitance on XL1 & XL2 pads 4 - pF
Table 5: 32.768 kHz Crystal (LFXO)
3.6.2 32.768 kHz clock source comparison
Symbol Parameter Min. Typ. Max. Unit
f
TOL_LFXO_BLE
Frequency Tolerance, 32.768 kHz Crystal Oscillator (Bluetooth low
energy Stack)
- - ±250 ppm
f
TOL_LFXO_ANT
Frequency Tolerance, 32.768 kHz Crystal Oscillator (ANT Stack) - - ±50 ppm
f
TOL_LFRC
Frequency Tolerance, 32.768 kHz RC Oscillator - - ±2 %
f
TOL_CAL_LFRC
Frequency tolerance, 32.768 kHz RC after calibration - - ±500 ppm
f
TOL_LFSYNT
Frequency Tolerance, 32.768 kHz Synthesized Oscillator - - ±8 ppm
Table 6 – 32.768 kHz Clock source comparison