Data Sheet

5、Reference Design
Explanation:
PA2 and PA3 are module downloads and debugger ports. It is recommended that they be
pulled out to facilitate debugging and downloading programs.
PA4 is connected to the status indicator pin. If the power consumption is not sensitive, it is
recommended to pull out a lamp to facilitate the later debugging or maintenance to see if
the Bluetooth module is connected.
6、Hardware Design Considerations
6.1、Module placement requirements on the bottom plate
(1) In order to meet the performance of the antenna on board, it is forbidden to place metal
parts around the antenna, away from high frequency devices.Avoid using metal in the product
housing and keep metal screw inside away from the RF part of the module.
(2) Pay attention to the layout of the module on the soleplate, and minimize the impact of the
soleplate on the performance of the module PCB antenna.
The following are suggested:
Option 1: Place the module at the edge of the motherboard and the antenna area extends
beyond the edge of the motherboard.
Option 2: Place the module at the edge of the motherboard, which empties an area at the
antenna position.
Option 3: If the above scheme is limited and cannot be implemented, make sure that the area
of the module PCB antenna and the area of 5 mm extension need to be cleared (copper, wiring
and placement of components are strictly prohibited).
TPL3132 DataSheet
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