FCC ID: N8NLSD4BTS25A S25A series BLE module

Lierda Science & Technology Co., LTD User Guide Product NameS25A series BLE module Document versionRev03 Address: West Road, Hangzhou City, No. 1326 Leader Science Park page 1 Contents Chapter 1 Feature ......................................................................................................................................... 3 Chapter2 layout and interface ................................................................................................................. 3 Chapter3 module control ............................................................................................................................. 5 3.1 UART communication ....................................................................................................................... 5 3.1.1 UART frame structure ....................................................................................................... 5 3.2 Dual UART coexistence rules ..................................................................................................... 5 3.3 other instructions ....................................................................................................................... 6 Chapter4 Notices ........................................................................................................................................... 6 Chapter5 To user ........................................................................................................................................... 6 Address: West Road, Hangzhou City, No. 1326 Leader Science Park page 2 Chapter 1 Feature This module is based on the Bluetooth SIG Bluetooth Low Energy standard designed BLE transparent module. The module control the BLE slave device as a master device . This product allows you to quickly develop standard BLE products without the complexity of BLE protocol research. After the connection is established, bi-directional data transfer between the master and the slave can be achieved Chapter2 layout and interface figure 2-1 module pin dimension table 2-1 pin description DIO_3 remark function Power 1.8-3.6Vtypical is 3.3V Power Ground name VCC GND DIO_0 UART_RX1 UART 1 receive pin DIO_1 UART_TX1 UART 1 transmit pin DIO_2 UART_RX2 UART 2 receive pin Sleep state indication 0Active statemodule can receive UART data 1Sleep statemodule cant receive UART data Data receive indication 0The data is sent to the MCU soon or now 1at this time there is no data sent to the MCU UART 2 transmit pin advertise control pin Lowturn on BLE and be able to be discover HighClose BLE stop to be discover or disconnected DIO_5 UART_TX2 BT_CTL DIO_6 DIO_4 BRE BTT Address: West Road, Hangzhou City, No. 1326 Leader Science Park page 3 BRT DIO_8 remark function name DIO_7 MODE_CTL Must set to low Sleep control pin lowwake up module highpermit module enter sleep module Connection state indication 0The number of successfully connected slaves is below the trigger condition 1The number of successfully connected slaves meets or exceeds the trigger condition CONN DIO_9 TMS JTAG_ TMS JTAG_ TCK RESET Reset module TCK Address: West Road, Hangzhou City, No. 1326 Leader Science Park page 4 Chapter3 module control 3.1 UART communication figure 3-1 communicaiton 3.1.1 UART frame structure Input frame structurehex Head1 Head2 CommandID 01 FC xx Output frame structurehex Head1 Head2 CommandID 04 FC xx len xx len xx content xxxx content xxxx 3.1.2 UART command ID For the detailed description of serial commands, refer to "LSD4BT-S25A045905 command docoument"

3.2 Dual UART coexistence rules Rule 1: from which serial port to establish a connection, the data related to the connection from which serial port return Rule 2: from which serial port to send commands, from which serial port to return Rule 3: The above two rules can not be applied from the serial port 1 back (Automatic Connection exception) Rule 4: When the module is automatically connected to the peripheral device, the first connected device is bound to serial port 1, all subsequent connections are bound to port 2, and the binding is subject to rule 1. Address: West Road, Hangzhou City, No. 1326 Leader Science Park page 5 3.3 other instructions Block diagram Chapter4 Notices 1. Please choose the right supply voltage 2. When using the module, pay attention to the correct pin order Chapter5 To user 1, Thanks for using Lierda Technology Co., Ltd. products, before using our products, please read this notice; If you have already started using instructions you have read and accepted this notice. 2, Lierda reserves the right to interpret and modify all the information on this tool, if any changes without notice. Address: West Road, Hangzhou City, No. 1326 Leader Science Park page 6 Lierda Technology Group Co., Ltd. IPG BT 2017-12 The device has been evaluated to meet general RF exposure requirement, The device can be used in portable exposure condition without restriction. This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications or changes to this equipment. Such modifications or changes could void the users authority to operate the equipment. This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:

(1) this device may not cause interference, and

(2) this device must accept any interference, including interference that may cause undesired operation of the device. Cet appareil est conforme avec Industrie Canada RSS exemptes de licence standard(s). Son fonctionnement est soumis aux deux conditions suivantes:

(1) cet appareil ne peut pas provoquer d'interfrences, et

(2) cet appareil doit accepter toute interfrence, y compris celles pouvant causer un mauvais fonctionnement de l'appareil. A certified modular has the option to use a permanently affixed label, or an electronic label. For a permanently affixed label, the module must be labelled with an FCC ID: N8NLSD4BTS25A and IC:

21461-LSD4BTS25A. The OEM manual must provide clear instructions explaining to the OEM the labelling requirements, options and OEM user manual instructions that are required For a host using a this FCC certified modular with a standard fixed label, if (1) the modules FCC ID is notvisible when installed in the host, or (2) if the host is marketed so that end users do not have straightforward commonly used methods for access to remove the module so that the FCC ID of the module is visible; then an additional permanent label referring to the enclosed module:

Contains Transmitter Module FCC ID: N8NLSD4BTS25A and IC: 21461-LSD4BTS25A or Contains FCC ID: N8NLSD4BTS25A and IC: 21461-LSD4BTS25A must be used. The host OEM user manual must also contain clear instructions on how end users can find and/or access the module and the FCC ID. Address: West Road, Hangzhou City, No. 1326 Leader Science Park page 7 Host product is required to comply with all applicable FCC equipment authorizations regulations, requirements and equipment functions not associated with the transmitter module portion. compliance must be demonstrated to regulations for other transmitter components within the host product; to requirements for unintentional radiators (Part 15B). To ensure compliance with all non-transmitter functions the host manufacturer is responsible for ensuring compliance with the module(s) installed and fully operational. If a host was previously authorized as an unintentional radiator under the Declaration of Conformity procedure without a transmitter certified module and a module is added, the host manufacturer is responsible for ensuring that the after the module is installed and operational the host continues to be compliant with the Part 15B unintentional radiator requirements. Since this may depend on the details of how the module is integrated with the host, we suggest the host device to recertify part 15B to ensure complete compliance with FCC requirement: Part 2 Subpart J Equipment Authorization Procedures , KDB784748 D01 v07, and KDB 997198 about importation of radio frequency devices into the United States. Address: West Road, Hangzhou City, No. 1326 Leader Science Park page 8