NB-IoT Module Series
BC66&BC660K-GL Compatible Design
BC66&BC660K-GL_Compatible_Design 23 / 30
4.8. UART Interfaces
The UART interfaces of BC66/BC660K-GL have different voltage domains, as listed below.
Table 8: UART Interface Voltage Domain
A compatible voltage level translation reference design for BC66/BC660K-GL’s UART interfaces is shown
below. For designs of the circuits in dotted lines, refer to those in solid lines, and pay attention to the
direction of connection.
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