Datasheet

Datasheet [Page 21]
EMB1061
Figure 13 External Interface Circuit of EMB1061
Voltage of EMB1061 UART is 3.3V. 5V UART should convert to 3.3V UART for the users that have 5V
chips. Convert circuit is shown in figure 14.
Figure 14 3.3V UART- 5V UART Convert Circuit