u-blox SAM-M8Q Integration Manual

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u-blox SAM-M8Q Integration Manual Manual pdf 9 page image

SAM-M8Q - Hardware Integration ManualUBX-16018358 - R05 Production Information DesignPage 9 of 232 Design2.1 Pin descriptionFunction PIN No I/O Description RemarksPower VCC 17 Main supply Provide clean and stable supply (low impedance, < 0.2 Ohms).GND 1, 4, 5, 6,10, 11, 15,16, 20Ground Assure a good GND connection to all GND pins of the module.VCC_IO 2 VCC_IO IO supply voltage. Must be always supplied. Usually connect toVCC Pin 17V_BCKP 3 Backup Supply It is recommended to connect a backup supply voltage to V_BCKPin order to enable Warm- and Hot Start features on the positioningmodule. Otherwise, connect to VCC_IO.UART TXD 13 O Serial Port Can be configured as TX_Ready for DDC interface. Leave open ifnot used.RXD 14 I Serial Port Leave open if not used.DDC SCL 12 I Serial Port Leave open if not used.SDA 9 I/O Serial Port Leave open if not used.System RESET_N 18 I Reset (ActiveLow)Leave open if not used. Do not drive high. Do not connect acapacitor at this pin.TIMEPULSE 7 O 1PPS Configurable Timepulse signal (one pulse per second by default).Leave open if not used.EXTINT 19 I Ext. Interrupt Leave open if not used.SAFEBOOT_N 8 I Leave open.Table 1: SAM-M8Q Pinout2.2 Minimal designThis is a minimal setup for a SAM-M8Q GNSS antenna module:Figure 3: SAM-M8Q GNSS patch antenna design