Datasheet

NEO-M8U - Data Sheet
UBX-15015679 - R06 Pin Definition Page 14 of 27
Product Information
2 Pin Definition
2.1 Pin assignment
Figure 2: Pin Assignment
No Name I/O Description
1 SAFEBOOT_N I SAFEBOOT_N, Test-point for service use (Leave OPEN)
2 D_SEL I Interface select
3 TIMEPULSE I/O Time pulse (disabled by default), do not pull low during reset
Note: configured using TIMEPULSE2 messages (see section 1.15)
4 EXTINT I External Interrupt Pin
5 USB_DM I/O USB Data
6 USB_DP I/O USB Data
7 VDD_USB I USB Supply
8 RESET_N I RESET_N
9 VCC_RF O Output Voltage RF section
10 GND I Ground
11 RF_IN I GNSS signal input
12 GND I Ground
13 GND I Ground
14 LNA_EN O Antenna control
15 Reserved - Reserved
16 Reserved - Reserved
17 Reserved - Reserved
18 SDA / SPI CS_N I/O DDC Data if D_SEL =1 (or open) / SPI Chip Select if D_SEL = 0
19 SCL / SPI CLK I/O DDC Clock if D_SEL =1(or open) / SPI Clock if D_SEL = 0
20 TXD / SPI MISO O Serial Port if D_SEL =1(or open) / SPI MISO if D_SEL = 0
21 RXD / SPI MOSI I Serial Port if D_SEL =1(or open) / SPI MOSI if D_SEL = 0
22 V_BCKP I Backup voltage supply
23 VCC I Supply voltage
24 GND I Ground
Table 6: Pinout of NEO-M8U