Additional Resources
20
SWRU372C – June 2014 – Revised March 2020
Copyright © 2014–2020, Texas Instruments Incorporated
CC3200 SimpleLink™ Wi-Fi
®
and Internet of Things Solution With MCU
LaunchPad™ Hardware
4.6
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5
Known Limitations
5.1
Hardware Limitations
5.1.1
Floating IO (All Revisions)
All GPIO outputs from the CC3200 device float while the device enters hibernate state. This can cause
glitches on the lines if they are not pulled externally.
5.1.2
Board Modification for LPDS Mode
There must be a 100K pulldown resistor on pin19 (JTAG_TCK) for the device to reliably enter LPDS
mode. This is not present on the boards.
5.1.3
Floating S-Flash Lines (Rev 3.2 and Earlier)
The SPI lines routed from the CC3200 to the on-board serial flash are not pulled up or down using
resistors on the board. When the device enters hibernate state, these pins can be floating, and high
currents can be drawn by the serial flash.
