Fanstel BlueFan BT680E, Manual, Page: 23 / 30

BlueFan BT680F/E/T BLE5 Module
23
Battery Powered Products
Current consumption is important for battery-powered product. If a 32.768 kHz crystal is installed,
main clock can be disabled in sleep mode to reduce power consumption. If you need to reduce sleep
mode power consumption, add a crystal and two capacitors to the SLPXOIN and SLPXOOUT pins.
8. FCC
(1) the module should not installed and operated simultaneously with other radios except additional
RF exposure was evaluated and meeting FCC requirement for simultaneously transmission.
(2) Antenna used should be limited to (Dipole) type with equal or lesser antenna gain.
9. Soldering Temperature-Time Profile for Re-Flow Soldering
Maximum number of cycles for re-flow is 2. No opposite side re-flow is allowed due to module weight.
10. Cautionsand Packaging
Cautions
Failure to follow the guidelines set forth in this document may result in degrading of the
product’sfunctions and damage to the product.
Design Notes
(1) Follow the conditions written in this specification, especially the control signals ofthis module.
(2) The supply voltage has to be free of AC ripple voltage (for example from a battery or a low noise
regulator output). For noisy supply voltages, provide a decoupling circuit (for example a ferrite in
series connection and a bypass capacitor to ground of at least 47uF directly at the module).