Sterling-LWB5 Module
Datasheet
BLUETOOTH UART HOST INTERFACE
Overview
The Sterling-LWB5 uses a single UART for Bluetooth. The UART is a standard 4-wire interface (RX, TX, RTS, and
CTS) with adjustable baud rates from 9600 bps to 4.0 Mbps. The interface features an automatic baud rate
detection capability that returns a baud rate selection. Alternatively, the baud rate may be selected through a
vendor-specific UART HCI command. The UART also supports the 3-wire UART Transport Layer which reduces
the number of signal lines required by eliminating the CTS and RTS signals.
Figure 19 UART Connection from Sterling-LWB5 to Host
DC Characteristics – SDO Interface Pins
Parameter
Test Conditions
Min
Typ
Max
Unit
Input high voltage
Input low voltage
VDDIO = 1.8V
VDDIO = 1.8V
VDDIO = 1.8V
VDDIO = 1.8V
1.7
-
-
-
-
-
V
V
V
V
0.63
0.45
Output high voltage @2mA
Output low voltage @2mA
1.4
-
Table 22 Bluetooth (UART) DC Characteristics
The information in this document is subject to change without notice.
330-0208-R2.1 Copyright © 2016-2018 LSR
Page 47 of 80
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