C88-M8M - Evaluating Eva-M8M On Existing Neo-Xm Sockets - u-blox EVA-8M Series Hardware Integration Manual

EVA-7M
Pin Name Typical Assignment
34 ANT_OK Antenna status
35 ANT_OFF Antenna control
36 Reserved Leave open.
37 GND Ground
38 GND Ground
39 GND Ground
40 GND Ground
41 GND Ground
42 GND Ground
43 GND Ground
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.
NEO-6M
Pin Name Typical Assignment
1 RESERVED SAFEBOOT_N
(Leave open)
2 SS_N SPI Slave Select
3 TIMEPULSE Time pulse (1PPS)
4 EXTINT0 External interrupt pin
5 USB_DM USB data
6 USB_DP USB data
7 VDD_USB USB supply
8 RESERVED Pin 8 and 9 must be
connected together.
9 VCC_RF Can be used for active
antenna or external LNA
supply.
10 GND GND
11 RF_IN GPS signal input
UBX-16010593 - R06
Early Production Information
EVA-8M and EVA-M8 series - Hardware Integration Manual
EVA-8M / EVA-M8M / EVA-M8Q
Pin Name Typical Assignment
ANT_OK Antenna status
ANT_OFF Antenna control
Reserved Leave open.
GND Ground
GND Ground
GND Ground
GND Ground
GND Ground
GND Ground
GND Ground
C88-M8M
Pin Name Typical Assignment
RESERVED SAFEBOOT_N
(Leave open)
D_SEL Leave open. If
connected to GND SPI
interface available on
Pins 18-21.
TIMEPULSE Time pulse (1PPS)
EXTINT0 External interrupt pin
USB_DM USB Data
USB_DP USB Data
VDD_USB USB supply
RESET_N Reset input
VCC_RF Can be used for active
antenna or external
LNA supply.
GND GND
RF_IN GPS signal input
Design-in
Remarks for
Migration
No difference
No difference
No difference
No difference
No difference
No difference
No difference
No difference
No difference
No difference
Remarks for Migration
No difference
Different functions. Only compatible if
this pin is left open!
No difference
No difference
No difference
No difference
No difference
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.
No difference
No difference
For designs with a passive antenna
directly connected to the RF_IN pin, an
additional LNA in front of C88-M8M is
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