Jumper Settings For Launchpad Kit Power; External Supply Connections And Led Enable Jumper; Reset Pullup Jumper - Texas Instruments CC3220-LAUNCHXL User Manual

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Table 4 lists the jumper settings for the LaunchPad kit power.
Reference Reference
(Rev. A) (Rev. B)
J14 J5
J21 J10
J20 J29
J19 J12
J17 J13
J18 J28
The board can be powered by an external supply when USB power is not available, by using either J22 or
J23. J24 is also available to remove any current draw from LEDs being driven by the GPIOs, see
Reference Reference
(Rev. A/C) (Rev. B)
J19 J12
J23 J19
J22 J20
J24 J9
2.5.5

Reset Pullup Jumper

Table 6 lists the reset pullup jumper.
Reference Reference
(Rev. A/C) (Rev. B)
J9 J26
SWRU463C – February 2017 – Revised March 2020
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Table 4. Jumper Settings for LaunchPad Kit Power
Use
OPAMP EN
GND
+5 VDC power
jumper
Current measurement Measures the current flowing into the CC3220 device and the serial flash.
Board power
VSENSE
Table 5. External Supply Connections and LED Enable Jumper
Use
Alternative 3.3-V
power input
5-V power input
3.3-V power input
LED EN
Table 6. Reset Pullup Jumper
Use
RESET pullup
CC3220 SimpleLink™ Wi-Fi
Copyright © 2017–2020, Texas Instruments Incorporated
Comments
If the jumper is uninstalled, the power supply to the OPAMP is cut off. This
can be used to enable low-current measurements. Ensure that this jumper
is on to use the OPAMP to drive the input to the ADC. The reference
voltage of the ADC is 1.47 V, so up to 3.48 V can be applied to the input of
the OPAMP. For the configuration of the OPAMP, see the
LaunchPad Kit Design Files.
Ground reference
Connects J19, +5 VDC to emulator section
Short: Supply the board power from the onboard DC-DC converter. The
board power includes the sensors, LED, and the OPAMP used to drive the
ADC input.
Used to power the level shifters on the emulator side of the board. The level
shifters can be powered by shorting this jumper. Removing this jumper
enables low-current measurement.
Comments
Can be used to power the board from an external 3.3-V supply; this can be
used to test the VBAT voltage range as the reverse voltage protection diode
on J22 drops the input by approximately 150 mV.
Used to power the board from an external 5-V supply.
Used to power the board from an external 3.3-V supply. J22 has built-in
reverse voltage protection to prevent the battery from being plugged in the
reverse manner.
If uninstalled, the LEDs connected to the GPIO are disabled; this can be
used to enable low-power measurements.
Comments
Install this jumper to enable the pullup resistor on the nRESET pin of the
device, when the board is powered from an external supply.
®
LaunchPad™ Development Kit Hardware
Hardware Description
CC3220
Table 5.
15