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Shield pin configuration

8 Debug UART and Low-Power Sleep Mode

When the Intel® Edison compute module goes into low-power sleep, the UART internal FIFO and interface is

powered down. Therefore, a two-wire UART (Rx/Tx) will lose the first received character whenever the Intel® Edison

compute module is in low-power sleep mode. In order to avoid this condition, when sleep mode is enabled, a four-

wire UART (Rx, Tx, CTS, and RTS) is required.

Note: Low-power sleep mode is disabled by default in the latest image. To address this, update your firmware as

explained in the Getting Started Guide at https://communities.intel.com/docs/DOC-23147.

Intel® Edison Kit for Arduino*

Hardware Guide December 2014

24 Document Number: 331191-004

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Intel Edison Compute Module (IoT) Specifiche Pagina 24