Hardware Description
14
SWAU106 – January 2019
Copyright © 2019, Texas Instruments Incorporated
CC3135 SimpleLink™ Wi-Fi
®
BoosterPack™ Development Kit (BOOSTXL-
CC3135)
2.5.2
Active Current Measurement
To measure active current in a profile form, TI recommends using a 0.1-
Ω
1% 0603 resistor on the board,
and measuring the differential voltage across the resistor. This measurement can be done using a
voltmeter or an oscilloscope for measuring the current profile.
Figure 9. Active Current Measurement
2.6
Clocking
The board provides two crystals for the clocks to the device:
•
Y1 is a 40MHz crystal.
•
Y3 is a 32kHz crystal used as a sleep clock.
The 32kHz crystal (Y3) allows for lower LPDS sleep currents than other low-frequency clock sources. The
presence of the crystal allows use of the full range of low-power modes.
