Hardware Description
2.4.2
I2C Connections
The board features an accelerometer and a temperature sensor for the out-of-box demo. These are
connected to the I2C bus and can be isolated using the jumpers provided.
Figure 5. I2C Connections
By removing J2 and J3, the accelerometer and the temperature sensors are isolated from the I2C bus.
Note that this also removes any pull-up resistor from the I2C bus.
2.4.2.1
Jumper Settings
Table 2. Jumper Settings
Reference
Usage
Comments
Short : Connect the CC3200MOD I2C bus to the on-board sensors with
J2
I2C SDA
pull-up
Open : Isolate the sensors from the CC3200MOD
Short : Connect the CC3200MOD I2C bus to the on-board sensors with
J3
I2C SCL
pull-up
Open : Isolate the sensors from the CC3200MOD
J4
INT
Short : Connect the accelerometer interrupt to the CC3200 on GPIO13
2.4.2.2
Default I2C Address
Table 3. Default I2C Addresses
Sensor Type
Ref
Part Number
Slave Address
Temp sensor
U6
TMP008
0x41
Accelerometer
U10
BMA222
0x18
2.4.3
Power Connections
The board can be powered by using the on-board micro USB connector. An on-board LDO provides 3.3 V
for the CC3200MOD and the rest of the board to operate. This supply can be isolated from the LDO using
the jumpers on the board.
Table 4. Jumper Settings
Reference
Usage
Comments
J12
Current measurement
Measures the current flowing into the CC3200 device.
Short: Supply the board power from the on-board LDO.
J13
Board power
Open: Supply the board power from the J20 (battery connector)
J19
5 V power
5 V output from the USB VBUS (has a diode drop of up to 0.4 V)
Can be used to power the board from an external 2XAA battery
J20
3.3 V power input
pack. It has in-built reverse voltage protection to prevent the battery
from being plugged in the reverse manner.
9
SWRU397 – December 2014
CC3200MOD SimpleLink™ Microcontroller and Wi-Fi® Network Processor
Module - LaunchPad Hardware
Copyright © 2014, Texas Instruments Incorporated
