EVA-8M and EVA-M8 series - Hardware Integration Manual
UBX-16010593 - R06
Design-in
Page 24 of 47
Early Production Information
P
in
EVA-7M
EVA-8M / EVA-M8M / EVA-M8Q
Pin Name
Typical Assignment
Pin Name
Typical Assignment
Remarks for
Migration
34 ANT_OK
Antenna status
ANT_OK
Antenna status
No difference
35 ANT_OFF
Antenna control
ANT_OFF
Antenna control
No difference
36 Reserved
Leave open.
Reserved
Leave open.
No difference
37 GND
Ground
GND
Ground
No difference
38 GND
Ground
GND
Ground
No difference
39 GND
Ground
GND
Ground
No difference
40 GND
Ground
GND
Ground
No difference
41 GND
Ground
GND
Ground
No difference
42 GND
Ground
GND
Ground
No difference
43 GND
Ground
GND
Ground
No difference
Table 7: Pin-out comparison EVA-7M vs. EVA-8M / EVA-M8M / EVA-M8Q
2.12.2
C88-M8M - Evaluating EVA-M8M on existing NEO-xM sockets
The C88-M8M GNSS application board is designed for easier evaluation and design-in of u-blox EVA-
M8M modules in existing NEO-xM modules based products. The C88-M8M series integrates the EVA-
M8M GNSS modules into a NEO form factor adaptor board (i.e. with the same dimensions and pinout
as the NEO-6M, NEO-7M and NEO-M8M). The C88-M8M application board allows straightforward
integration of the u-blox EVA-M8M modules in customers’ existing end products based on the u-blox
NEO GNSS modules. It enables fast verification of the EVA-M8M functionalities and performances
before the design-in.
☞
Schematic of C88-M8M is available upon request.
P
in
NEO-6M
C88-M8M
Pin Name
Typical Assignment
Pin Name
Typical Assignment
Remarks for Migration
1
RESERVED
SAFEBOOT_N
(Leave open)
RESERVED
SAFEBOOT_N
(Leave open)
No difference
2
SS_N
SPI Slave Select
D_SEL
Leave open. If
connected to GND SPI
interface available on
Pins 18-21.
Different functions. Only compatible if
this pin is left open!
3
TIMEPULSE Time pulse (1PPS)
TIMEPULSE Time pulse (1PPS)
No difference
4
EXTINT0
External interrupt pin
EXTINT0
External interrupt pin No difference
5
USB_DM
USB data
USB_DM
USB Data
No difference
6
USB_DP
USB data
USB_DP
USB Data
No difference
7
VDD_USB
USB supply
VDD_USB
USB supply
No difference
8
RESERVED
Pin 8 and 9 must be
connected together.
RESET_N
Reset input
If pin 8 is connected to pin 9 on C88-
M8M, the device always runs. With
NEO-6Q, if Reset input is used, it
implements the 3k3 resistor from pin
8 to pin 9. This also works with
NEO-7N. If used with NEO-7N, do not
populate the pull-up resistor.
9
VCC_RF
Can be used for active
antenna or external LNA
supply.
VCC_RF
Can be used for active
antenna or external
LNA supply.
No difference
10 GND
GND
GND
GND
No difference
11 RF_IN
GPS signal input
RF_IN
GPS signal input
For designs with a passive antenna
directly connected to the RF_IN pin, an
additional LNA in front of C88-M8M is
