Ublox EVK-M8GZOE, User Manual

Page: 14 / 30

EVK-M8GZOE User Guide
UBX-16030132 - R04 Device description Page 14 of 30
Early Production Information
4.4 Digital Connector
There is a 20-pin connector on EVK-M8GZOE. It provides several PIO’s, interfaces and supply
options. All these pins are ESD protected.
PIN Nr. PIN NAME I/O LEVEL DESCRIPTION
1 V_BCKP I 2.5V…3.6V Backup supply
2 V5_IN I 4.5V…5.5V Main Supply
3 NC
4 GND - GND
5 SAFEBOOT_N I 1.8 V
6
GND - GND
7 SDA / SPI CS_N I/O 1.8V DDC SDA or SPI CS_N, depends on interface switch
8 GND - GND
9 SCL / SPI SCK I/O 1.8V DDC SCL or SPI SCK, depends on interface switch
10 GND - GND
11 TIMEPULSE1 O 1.8V 1PPS
12 GND - GND
13 EXTINT0 I 1.8V
14 GND - GND
15 RESET_N I 1.8V RESET input
16
GND - GND
17 TXD / SPI MISO O 1.8 V UART TX or SPI MISO, depends on interface switch
18 GND - GND
19
RXD / SPI MOSI I 1.8 V UART RX or SPI MOSI, depends on interface switch
20 GND - - GND
Table 5: Connector pin description for EVK-M8GZOE
4.5 LED
On the EVK-M8GZOE, the blue LED shows the time pulse 1 signal. The LED starts flashing with one
pulse per second if doing GNSS fixes. If there is no GNSS fix, the LED will only light, without flashing.
☞
With the blue LED, flashing or always on indicate that the EVK-M8GZOE is supplied.
4.6 Flash
There is the optional flash connected to ZOE-M8G on EVK-M8GZOE. By default it can be used for:
•
Store the current configuration permanently
•
Save data logging results
•
Hold AssistNow Offline and AssistNow Autonomous data
The Flash could also be used for running firmware, but by default the firmware runs on the ROM of
ZOE-M8 modules.