User's Manual

Doc No.
Rev
1.0
Document released Date.
15/8/25
Page
7
Description
WM-BN-BM-26_A User Manual
Clock
LPO_32K(32.768 KHz) is clock need isolated by ground to avoid noise. Both supply
variation and module external clock of signals onto this radio reference must be avoided.
The clock signal trace, into the module, must be protected against corruption, by other
clocks, power supply transients, and digital noise. These signals must be routed carefully
using techniques similar to micro-strip and strip-line to maintain high isolation and signal
purity.
Recommended orient the components to keep the clock signal lines from host as short
and direct as possible.
Recommended to add more GND vias near the CLK routing to minimize noise coupling
from other circuit
The content of this document is to be treated as strictly confidential and is not to be disclosed, reproduced or used, except as
authorized in writing by Universal Scientific Industrial Co., Ltd. Copyright © 2011 Universal Scientific Industrial Co. ,Ltd.
7