Telit Wireless Solutions GE864 manual Using the RF Transmission Control GPIO4

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GE864 Hardware User Guide

1vv0300694 Rev.10 - 10/06/08

10.4 Using the RF Transmission Control GPIO4

The GPIO4 pin, when configured as RF Transmission Control Input, permits to disable the Transmitter when the GPIO is set to Low by the application.

In the design is necessary to add a pull up resistor (47K to PWRMON).

10.5 Using the RFTXMON Output GPIO5

The GPIO5 pin, when configured as RFTXMON Output, is controlled by the GE864-QUAD / PY module and will rise when the transmitter is active and fall after the transmitter activity is completed. For example, if a call is started, the line will be HIGH during all the conversation and it will be again LOW after hanged up.

The line rises up 300ms before first TX burst and will became again LOW from 500ms to 1sec after last TX burst.

10.6 Using the Alarm Output GPIO6

The GPIO6 pad, when configured as Alarm Output, is controlled by the GE864-QUAD / PY module and will rise when the alarm starts and fall after the issue of a dedicated AT command.

This output can be used to power up the GE864-QUAD / PY controlling micro controller or application at the alarm time, giving you the possibility to program a timely system wake-up to achieve some periodic actions and completely turn off either the application and the GE864-QUAD / PY during sleep periods, dramatically reducing the sleep consumption to few μA.

In battery-powered devices this feature will greatly improve the autonomy of the device.

NOTE: During RESET the line is set to HIGH logic level.

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Contents GE864 Hardware User Guide GE864 Hardware User Guide This document is relating to the following productsContents 10.1 10.210.3 10.4Safety Recommandations Packing systemDisclaimer Overview GE864-QUAD / PYGE864 Mechanical Dimensions Length 30 mm Width ThicknessGE864 module connections PIN-OUTGpio Reserved Vbatt BGA Balls Layout TOP ViewReserved Hardware Commands Turning on the GE864-QUAD / PY10k Turning OFF the GE864-QUAD / PY Hardware shutdownHardware Unconditional Restart 10k Power Supply Power Supply RequirementsGeneral Design Rules Electrical Design Guidelines1.2 + 12V input Source Power Supply Design Guidelines GE864 Hardware User Guide Battery Source Power Supply Design Guidelines Battery Charge control Circuitry Design Guidelines GE864 Hardware User Guide Thermal Design Guidelines Power Supply PCB layout Guidelines Antenna GSM Antenna RequirementsGSM Antenna PCB line Guidelines Antenna Line on PCB RequirementsGSM Antenna Installation Guidelines Logic level specifications Current characteristicsAbsolute Maximum Ratings -Not Functional Operating Range Interface levels 2.8V CmosReset signal Signal Function Bga BallSignal Min Max Serial Ports Absolute Maximum Ratings -Not Functional ParameterMin MaxOperating Range Interface levels 2.8V Cmos Level Min Max Signals of the GE864 serial port are RS232 level translation GE864 Hardware User Guide 5V Uart level translation GE864 Hardware User Guide Audio Section Overview External AmplifierInput Lines Microphone Short descriptionInput Lines Characteristics Micmt 1st differential microphone pathOutput Lines Speaker Output Lines Characteristics External SIM Holder ImplementationGeneral Purpose I/O OnoffPict01 Gpio Logic levels Absolute Maximum Ratings -Not Functional Parameter Min MaxOperating Range Interface levels 1.8V Cmos Level Min Max Using a Gpio Pad as Input Using a Gpio Pad as OutputUsing the RF Transmission Control GPIO4 Using the Rftxmon Output GPIO5Using the Alarm Output GPIO6 Using the Buzzer Output GPIO7 AT#SRP=3Magnetic Buzzer Concepts Power Supply Influence Frequency BehaviourWorking Current Influence Using the Temperature Monitor Function Allowed GpioIndication of network service availability LED status Device StatusVAUX1 power output RTC Bypass outDAC and ADC section DAC ConverterDescription Min Max UnitsCommand is AT#DAC=enable,value Enabling DACLow Pass Filter Example Using ADC Converter ADC ConverterModule finishing & dimensions Mounting the GE864 on your Board12.1General Recommended foot print for the application GE864 Top ViewSuggested Inhibit Area Top ViewDebug of the GE864 in production StencilPCB pad design Ball pitch mm Solder resist opening diameter a mmMetal pad diameter B mm Solder paste Finish Layer thickness µm PropertiesLead free Solder paste Sn/Ag/Cu12.1.8 GE864 Solder reflow Following is the recommended solder reflow profilePacking system 12.2.1 GE864 orientation on the tray Moisture sensibility Conformity Assessment Issues Safety Recommandations Document Change Log Revision Date Changes

GE864 specifications

The Telit Wireless Solutions GE864 is a compact yet robust cellular module designed for a wide range of M2M (Machine-to-Machine) applications. As part of the Telit family, the GE864 is particularly notable for its small form factor, reliability, and versatility, making it an ideal choice for various industries including automotive, healthcare, and utilities.

One of the standout features of the GE864 is its integrated GPRS capabilities, allowing devices to connect to cellular networks seamlessly. With a maximum data rate of 85.6 kbps for downlink and 42.8 kbps for uplink, this module facilitates efficient data transmission, suitable for applications that require real-time data monitoring and control.

The GE864 supports multiple frequency bands, ensuring global compatibility. It can operate on GSM/GPRS networks, enhancing its usability across different regions. This multi-band support allows developers to deploy their solutions in diverse markets without modifying the hardware, thus saving both time and resources.

Power management is another critical area where the GE864 shines. The module comes equipped with advanced power-saving features, allowing it to operate effectively in battery-powered applications. Notable features include sleep modes and intelligent power management protocols that help extend battery life while maintaining reliable connectivity.

In terms of physical specifications, the GE864 has a compact design, measuring only 29x38 mm, which is essential for integration into space-constrained environments. This makes it particularly well-suited for applications in remote monitoring, asset tracking, and utility metering.

The module supports a range of interfaces, including UART, USB, and I2C, providing developers with the flexibility to connect various peripheral devices and sensors. This versatility enables the creation of customized solutions tailored to specific application needs.

Furthermore, the GE864 is designed to meet rigorous quality and durability standards, making it suitable for use in harsh environments. Its resilience to extreme temperatures and vibrations ensures dependable performance in challenging conditions, which is often a requirement in industrial and automotive applications.

In summary, the Telit Wireless Solutions GE864 is a feature-rich cellular module that combines compact design with robust performance and versatility. Its advanced connectivity options, efficient power management, and reliable operation make it an invaluable asset for businesses looking to develop innovative M2M solutions. Whether it’s for smart cities, telematics, or healthcare applications, the GE864 is engineered to meet the demands of today's connected world.
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