Overview and Key Features ................................................................................................................................................... 4
Power Consumption ............................................................................................................................................................ 20
Power Management ................................................................................................................................................... 23
5.2
BL654 Power Supply Options ..................................................................................................................................... 23
5.3
Clocks and Timers....................................................................................................................................................... 26
5.4
Radio Frequency (RF) ................................................................................................................................................. 26
USB interface .............................................................................................................................................................. 29
5.8
SPI Bus ........................................................................................................................................................................ 29
General Purpose I/O, ADC, PWM and FREQ ............................................................................................................... 30
Low Power Modes ...................................................................................................................................................... 33
5.15
Temperature Sensor................................................................................................................................................... 33
PCB Layout on Host PCB - General ............................................................................................................................. 40
6.3
PCB Layout on Host PCB for the 451-00001 ............................................................................................................... 40
6.4
External Antenna Integration with the 451-00002 .................................................................................................... 42
Application Note for Surface Mount Modules .................................................................................................................... 45
FCC and IC Regulatory Statements ...................................................................................................................................... 50
Japan (MIC) Regulatory ....................................................................................................................................................... 54
CE Regulatory ...................................................................................................................................................................... 55
Ordering Information .......................................................................................................................................................... 57
Bluetooth SIG Qualification ................................................................................................................................................. 57
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