User's Manual

WiBear11n Data Sheet

Version 1.18

www.lesswire.com

Page 7 of 20

26 ANT2 I/O, RF Bluetooth antenna for WiBear11n-SF2/-DF2 module, at WiBear-SF1/-DF1

not connected

27 GND Ground Ground

28 GND Ground Ground

29 ANT1 I/O, RF WLAN + Bluetooth antenna for WiBear11n-SF1/-DF1 module, WLAN only

antenna for WiBear11n-SF2/-DF2 module

30 GND Ground Ground

NOTES:

Possible to use as a LED output depend on firmware (driver) version. Regardless of the I/O supply

(1.8V or 3.3V), the supply to the actual board LED always need to use 3.3V on the other end of the

LED and works as open drain circuitry in that case. LED current limiting resistor should be used.

Maximum sink to the ground current - 10 mA.

Should be provided from external source in case of power save operation modes necessity. Not

required for full power mode and for automotive use (firmware & driver version 14.44). Mandatory

for all other releases with sleep mode support. Sleep clock signal requirements: frequency

32.768kHz ±250ppm, low level from 0 to 0.25V, high level from 0.8 to 2.0V, duty cycle 20-80%,

slew rate less than 100nS (10-90%).

Leave it unconnected when 32.768KHz Sleep Clock provided, pull down by 47K resistor for Sleep

Clock less operation.