HUZZAH CC3000 WiFi Breakout - 1469

The board comes with an onboard 3.3V regulator that can handle the 350mA peak current, and a level shifter to allow 3V or 5V logic level. The antenna layout is identical to TI's suggested layout and using the same components, trace arrangement, and antenna so the board maintains its FCC emitter compliance. The CC3000 is fairly simple to use. The module requires an SPI connection, including a clock (CLK), data in from a microcontroller (MOSI) and data out to the microcontroller (MISO). It also uses a chip select line (CS) for SPI to indicate when a data transfer has started. Along with the SPI interface, there is a power-enable type pin called VBAT_EN which is used to start the module properly and also an IRQ pin, which is the interrupt from the CC3000. The IRQ pin is required to communicate and must be tied to an interrupt-in pin on the Arduino.

The CC3000 breakout board is packed with a strip of header pins. By default, SPI through the ICSP header is not connected. To enable the ICSP header connections, the user has to connect three solder jumpers on the bottom of the CC3000 shield.