User's Manual

CANSEC INTERNATIONAL LTD. WB822D User Manual V1.0.1
http://www.rf-products.com
August 30 2017
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Page
3
of 6
Analog input ADC input 2
8 P0.02/AIN3 Digital I/O
Analog input
General purpose I/O
ADC input 3
9P0.00/ARE
F0
Digital I/O
Analog input
General purpose I/O
ADC Reference voltage
10 P0.27/AIN1
/XL1
Digital I/O
Analog input
General purpose I/O
ADC input 1
Crystal connection for 32.768kHz crystal
oscillator or external 32.768kHz crystal
reference
11 P0.26/AIN0
/XL2
Digital I/O
Analog input
Analog output
General purpose I/O
ADC input 0
Crystal connection for 32.768kHz crystal
oscillator
12 P0.24 Digital I/O General purpose I/O
13 P0.21 Digital I/O General purpose I/O
14 P0.22 Digital I/O General purpose I/O
15 P0.25 Digital I/O General purpose I/O
16 GND GND Ground
17 GND GND Ground
Recommended PCB Layout for Package
1
1
Noted: Please make sure without any wiring or ground under the antenna area.
8.6mm
1.76mm
1.2mm
1.27mm
8mm
1mm
8.6mm
5mm
3mm
8mm
0.6m
m
0.9mm