NEO-8Q / NEO-M8 - Hardware integration manual
UBX-15029985 - Production information
Design
Page 12 of 13
C1-Public
2.1.1
Pin name changes
Selected pin names have been updated to agree with a common naming convention across u-blox
modules. The pins have not changed their operation and are the same physical hardware but with
updated names. The table below lists the pins that have a changed name along with their old and new
names.
No.
Previous name
New name
14
ANT_ON
LNA_EN
20
TxD
SPI MISO
TXD /
SPI MISO
21
RxD
SPI MOSI
RXD /
SPI MOSI
Table 3: Pin name changes
2.2
Minimal design
This is a minimal design for a NEO-8Q and NEO-M8 series GNSS receiver.
Figure 4: NEO-8Q / NEO-M8 passive antenna design
☞
NEO-M8M can support passive antenna, but for optimal operation it requires an external SAW and
LNA, see Figure 7.
2.3
Layout: Footprint and paste mask
Figure 5 describes the footprint of the NEO-8Q and NEO-M8 series modules and provides
recommendations (not specifications) for the paste mask Note that the copper and solder masks
have the same size and position.
To improve the wetting of the half vias, reduce the amount of solder paste under the module and
increase the volume outside of the module by defining the dimensions of the paste mask to form a T-
shape (or equivalent) extending beyond the copper mask. For the stencil thickness, see section 4.2.
