LEA-M8S / LEA-M8T - Hardware Integration Manual
UBX-13003140 - R07
Production Information
Design
Page 10 of 31
Function
PIN
No
I/O Description
Remarks
Reserved
(LEA-M8S)
-
Reserved
Leave open
Reserved
9, 21, 22,
23
-
Reserved
Leave open
Table 2: Pinout LEA-M8S / LEA-M8T
2.2
Minimal design
This is a minimal setup for a GNSS receiver with a LEA-M8S / LEA-M8T module:
•
Passive antenna used
•
No backup battery
•
UART for communication
Figure 4: LEA-M8S / LEA-M8T passive antenna design
For active antenna design, see section 2.4
2.3
Footprint and paste mask
Figure 5 describes the footprint and provides recommendations for the paste mask for the LEA-M8S and
LEA-M8T modules. These are recommendations only and not specifications. 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 Figure 6.
