u-blox LEA-5 Series Hardware Manual

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u-blox LEA-5 Series Hardware Manual Manual pdf 64 page image

LEA-5, NEO-5, TIM-5H - Hardware Integration ManualGPS.G5-MS5-09027-A2 Released AppendixPage 64 of 68A.5 Migration from NEO-4S to NEO-5Q/NEO-5MThe pin-outs of NEO-4S and NEO-5M/NEO-5Q differ slightly. Table 18 compares the modules and highlights thedifferences to be considered.Pin NEO-4S NEO-5Q/NEO-5M Remarks for MigrationPin Name Typ. Assignment Pin Name Typ. Assignment1 BOOT_INT NC Reserved NC do not drive low.2 SELECT VDDIO level I/O;not connectedNC/SS_N NC NEO-5M: NCNEO-5Q: SS_N3 TIMEPULSE VDDIO level I/O TIMEPULSE Output4 EXTINT0 NC EXTINT0 NC5 USB_DM NC USB_DM NC6 USB_DP NC USB_DP NC7 VDDUSBConnected toGND orVDD_USBVDDUSBConnected toGND orVDD_USBDo not leave open. (VDD_USB is 3.3V regulatedpower supply from VBUS.)8 Reserved NC Reserved NC Pins 8 and 9 must be connected.9 VCC_RF VCC-0.1V VCC_RF VCC-0.1V No difference10 GND GND GND GND No difference11 RF_IN RF_IN RF_IN RF_IN No difference12 GND GND GND GND No difference13 GND GND GND GND No difference14 MOSI NC MOSI/CFG_COM0 NC The function of the CFG pin has changed. SeeSection 2.3 for more details.15 MISO NC MISO//CFG_COM1/NC NC16 SCK/CFG_USB RF_IN SCK/CFG_GPS0/NC NCLeave open if not used.The function of the CFG pin has changed. SeeSection 2.3 for more details.17 NCS NC SCS1_N/NC NC No difference18 Reserved NC SDA2 NC19 Reserved NC SCL2 NC20 TXD1 VDDIO level I/O TxD1 Output21 RXD1 VDDIO level I/O RxD1 Input Leave open if not used.22 V_BAT 1.5-3.6V V_BCKP 1.4-3.6VWider voltage range but needs more current.Check your backup supply, regarding the higherconsumption.23 VCC 2.7-3.3V VCC 2.7-3.6V Higher peak supply current24 GND GND GND GND No difference: Pins to be checked carefully; NC: Not connectedTable 18: Pin-out comparison NEO-4S vs. NEO-5