EVA-8M and EVA-M8 series - Hardware Integration Manual
UBX-16010593 - R06
Design-in
Page 19 of 47
Early Production Information
•
VDD_USB
: Connect the USB power supply to a LDO before feeding it to
VDD_USB
and
VCC
or
connect it to GND if USB is not used.
•
Ensure an optimal ground connection to all ground pins of the EVA-8M / EVA-M8 series GNSS
modules.
•
Choose the required serial communication interfaces (UART, USB, SPI or DDC) and connect the
appropriate pins to your application
•
If you need hot or warm start in your application, connect a Backup Battery to
V_BCKP
and add
RTC circuit.
•
If antenna bias is required, see Appendix A.4.
2.9
Pin description
Pin #
Name
I/O
Description
Remark
1
RF_IN
I
RF Input
Add external LNA and SAW if no active antenna
used.
2
GND
I
Ground
Outer ground pin
3
Reserved
I/O
Reserved
Do not connect. Must be left open!
4
Reserved
I/O
Reserved
Do not connect. Must be left open!
5
USB_DM
I/O
USB data
Leave open if not used.
6
USB_DP
I/O
USB data
Leave open if not used.
7
VDD_USB
I
USB Interface power
Connect to GND if not used.
8
RTC_O
O
RTC Output
Leave open if no RTC Crystal attached.
9
RTC_I
I
RTC Input
Connect to GND if no RTC Crystal attached.
10
Reserved
I/O
Reserved
Do not connect. Must be left open!
11
Reserved
I/O
Reserved
Do not connect. Must be left open!
12
PIO14 / ANT_DET I
Antenna detection
Leave open if not used.
13
PIO13 / EXTINT
I
External interrupt
Leave open if not used.
14
RESET_N
I
System reset
See section 2.7.
15
RXD / SPI MOSI
I
Serial interface
See section 2.2.
16
TXD / SPI MISO
O
Serial interface
See section 2.2.
17
Reserved
I/O
Reserved
Do not connect. Must be left open!
18
GND
I
Ground
Outer ground pin
19
VCC
I
Main supply
See section 2.1.
20
VCC_IO
I
I/O Supply
See section 2.1.
21
V_BCKP
I
Backup supply
See section 2.1.
22
SQI_D0
I/O
Data line 0 to external SQI flash
memory or reserved configuration pin.
Leave open if not used.
23
SQI_CLK
I/O
Clock for external SQI flash memory or
configuration pin.
Leave open if not used.
24
SQI_D2
I/O
Data line 2 to external SQI flash
memory or reserved configuration pin.
Leave open if not used.
25
SQI_D1
I/O
Data line 1 to external SQI flash
memory or reserved configuration pin.
Leave open if not used.
26
SQI_CS_N
I/O
Chip select for external SQI flash
memory or configuration enable pin.
Leave open if not used.
27
SQI_D3
I/O
Data line 3 to external SQI flash
memory or reserved configuration pin.
Leave open if not used.
28
Reserved
I/O
Reserved
Do not connect. Must be left open!
29
SCL / SPI CLK
I
Serial interface
See section 2.2.
30
SDA / SPI CS_N
I/O
Serial interface
See section 2.2.
