Telit Wireless Solutions manual Turning OFF the UC864-E, Hardware shutdown

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UC864-E Hardware User Guide

1vv0300766a Rev.1 - 31/01/08

4.2Turning OFF the UC864-E

The turning off of the device can be done in three ways:

•By software command (see UC864-E Software User Guide)

•By hardware shutdown

•By Hardware Unconditional Restart

When the device is shut down by software command or by hardware shutdown, it issues to the network a detach request that informs the network that the device will not be reachable any more.

4.2.1 Hardware shutdown

To turn OFF UC864-E, first, you MUST cut off supplying power to the USB_VBUS pin, then the pad ON# must be tied low for at least 2 seconds and then released.

The same circuitry and timing for the power on shall be used.

The device shuts down after the release of the ON# pad.

NOTE: To turn OFF UC864-E, first of all, you MUST cut off supplying power to the USB_VBUS, or the module does not turn off

TIP: To check if the device has powered off, the hardware line PWRMON should be monitored. When PWRMON goes low, the device has powered off.

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Contents UC864 Hardware User Guide UC864-E Hardware User Guide This document is relating to the following productsContents 11.1 10.310.4 11.2Disclaimer Overview Mechanical Dimensions Length 36.2 mm Width 30 mm Thickness 8mmUC864-E module connections PIN-OUTCmos Reserved 1 UC864-E Antenna connector Pin Signal FunctionHardware Commands Turning on the UC864-E10k Turning OFF the UC864-E Hardware shutdownHardware Unconditional Restart 10k +1.8 Power Supply Power Supply RequirementsUC864-E Hardware User Guide General Design Rules Electrical Design Guidelines1.2 + 12V input Source Power Supply Design Guidelines UC864-E Hardware User Guide Battery Source Power Supply Design Guidelines UC864-E Hardware User Guide Thermal Design Guidelines Power Supply PCB layout Guidelines Antenna Antenna RequirementsAntenna Installation Guidelines Operating Range Interface levels Logic level specificationsAbsolute Maximum Ratings -Not Functional Operating Range Interface levels 1.8V CmosReset signal Serial Ports Absolute Maximum Ratings Not FunctionalSignals of the UC864-E serial port are RS232 level translation UC864-E Hardware User Guide UC864-E Hardware User Guide 5V Uart level translation UC864-E Hardware User Guide USB Port Communication ports combinationsDefinitions Audio Section OverviewGenerality SelectionElectrical Characteristics Input lines microphoneOutput lines speaker EarMT BuffersGeneral Purpose I/O NotLogic level specifications Using the Alarm Output GPIO6 Using a Gpio Pad as InputUsing a Gpio Pad as Output Using the Buzzer Output GPIO7 Indication of network service availability LED status Device StatusRTC Bypass out VAUX1 power outputOperating Range VAUX1 power supply Mounting UC864-E on your board Debug of the UC864-E in production USB Vbus UsbidConformity Assessment Issues Safety Recommandations Document Change Log Revision Date Changes