- #SIMCOM SERIES DOWNLOAD TOOL HOW TO#
- #SIMCOM SERIES DOWNLOAD TOOL SERIAL#
- #SIMCOM SERIES DOWNLOAD TOOL FULL#
When the module is used in full modem mode for data transmission, all the signal lines should be connected.
#SIMCOM SERIES DOWNLOAD TOOL SERIAL#
Serial port interface is available which complies with 2.80 Volts interface. The Serial port Contains data lines TXD and RXD, hardware flow control lines RTS and CTS, status lines DTR, DCD and RI. It provides a full modem Serial port which is used for data transmission and for sending AT commands. This document can help user quickly understand Serial interface of the modules.Ģ Connection SIM900 is designed as a DCE (Data Communication Equipment).
#SIMCOM SERIES DOWNLOAD TOOL HOW TO#
&5.2 Modified hardware flow control AT command.ġ Introduction This document describes the Serial interface of the modules and how to take it into account in client’s application design.
7 Figure 6: Synchronizing baud rate flow chart. 7 Figure 5: The lever shifter by SP3238E for communication with PC. 6 Figure 4: The lever shifter by transistor for communication with MCU. 5 Figure 3: The lever shifter by buffer with open drain outputs. 5 Figure 2: Connection of the serial interfaces in null modem mode. 12įigure Index Figure 1: Connection of the serial interfaces in full modem mode. 10 Table 4: AT+CFGRI Indicate RI when using URC. Table Index Table 1: Logic levels of the serial port. 9 5.2 Hardware flow control (RTS/CTS flow control). 8 5.1 Software flow control (XON/XOFF flow control). SIM900_Serial Port_Applocation Note_V1.03Ĭontents Contents. Copyright © Shanghai SIMCom Wireless Solutions Ltd. All specification supplied herein are subject to change without notice at any time. All rights reserved in the event of grant of a patent or the registration of a utility model or design. Offenders are liable to the payment of damages. Copyright This document contains proprietary technical information which is the property of SIMCom Limited., copying of this document and giving it to others and the using or communication of the contents thereof, are forbidden without express authority. All specifications supplied herein are subject to change.
Furthermore, system validation of this product designed by SIMCom within a larger electronic system remains the responsibility of the customer or the customer’s system integrator. SIMCom has not undertaken any independent search for additional relevant information, including any information that may be in the customer’s possession. The information provided is based upon requirements specifically provided to SIMCom by the customers. General Notes SIMCom offers this information as a service to its customers, to support application and engineering efforts that use the products designed by SIMCom. SIM900_Serial Port_Application Note_V1.03
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