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RF96 Datasheet(PDF) 108 Page - HOPE Microelectronics CO., Ltd.

Part # RF96
Description  Low Power Long Range Transceiver
PDF  121 Pages
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Manufacturer  HOPE [HOPE Microelectronics CO., Ltd.]
Direct Link  https://www.hoperf.com/
Logo HOPE - HOPE Microelectronics CO., Ltd.

RF96 Datasheet(HTML) 108 Page - HOPE Microelectronics CO., Ltd.

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Page 108
RF96/97/98
Tel: +86-755-82973805
Fax: +86-755-82973550
E-mail: sales@hoperf.com http://www.hoperf.com
WIRELESS & SENSING
PRELIMINARY
DATASHEET
7. Application Information
7.1. Crystal Resonator Specification
Table 89 shows the crystal resonator specification for the crystal reference oscillator circuit of the RF96/97/98. This
specification covers the full range of operation of the RF96/97/98 and is employed in the reference design.
Table 89 Crystal Specification
Symbol
Description
Conditions
Min
Typ
Max
Unit
FXOSC
XTAL Frequency
-
32
-
MHz
RS
XTAL Serial Resistance
-
30
TBC
ohms
C0
XTAL Shunt Capacitance
-
2.8
TBC
pF
CFOOT
External Foot Capacitance
On each pin XTA and XTB
8
15
22
pF
CLOAD
Crystal Load Capacitance
6
-
12
pF
Notes - the initial frequency tolerance, temperature stability and ageing performance should be chosen in accordance
with the target operating temperature range and the receiver bandwidth selected.
- the loading capacitance should be applied externally, and adapted to the actual Cload specification of the XTAL.
7.2. Reset of the Chip
A power-on reset of the RF96/97/98 is triggered at power up. Additionally, a manual reset can be issued by controlling pin
6.
7.2.1. POR
If the application requires the disconnection of VDD from the RF96/97/98, despite of the extremely low Sleep Mode
current, the user should wait for 10 ms from of the end of the POR cycle before commencing communications over the SPI
bus. Pin 7 (NRESET) should be left floating during the POR sequence.
Figure 42. POR Timing Diagram
Please note that any CLKOUT activity can also be used to detect that the chip is ready.



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