ZBA Inc
.
ZBA, Inc.
94 Old Camplain Road Hillsborough, NJ 08844
Ph: 908-359-2070 Fax: 908-595-0909
Web: http://www.zbausa.com/
8
The UART
The module provides four-wire+ Ground serial asynchronous communication interface;
The following diagram shows the TXD, RXD, CTS, RTS signals for the UART and the direction of the
data flow. The voltage levels of the UART are low= 0 Volts and Hi = Vdd (3.3Volts). For two (2) wire +
Ground operation do not connect CTS and RTS.
Figure 8-1 Diagram of the UART four (4) wire +ground interface:
Ground
Direction of signals
