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RF650-868 Datasheet(PDF) 7 Page - rfsolutions.ltd |
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RF650-868 Datasheet(HTML) 7 Page - rfsolutions.ltd |
7 / 11 page DS650-6 June ‘06 ©2006 RF Solutions Ltd, www.rfsolutions.co.uk Page 7 Tel 01273 898000 Fax 01273 480661 SMART RADIO TRANSCEIVER RF650 4 Application Information Connection of the RF650 to an RS232 host terminal device such as a PC serial port may easily be achieved using the circuit as below. The 9 way ‘D’ socket (J1) provides the standard pinout required to connect directly to the serial port of any std PC using a 9 way male/female cable. The MAX3232 (U2, a low voltage RS232 line driver) provides level conversion between the RS232 levels on the serial port and the logic levels pins of the RF650 module. (note that direct connection of RS232 levels to the module will result in immediate destruction of the device). J6 provides power to the circuit, pin 2 of J6 connects to your Vcc supply while pin 1 connects to your Ground. 4.1 Application Schematic Circuit notes: J2,3,4 and 5 allow the selection of the following modes: J2 when shorted sets the module for normal running mode or if left open selects configuration mode. J3 and J4 selects the host data rate. J5 when sorted puts the module into standby mode or when left open in normal operation. If two such circuits are constructed then it will be possible to interconnect two PC’s and test out the performance of the hybrids. When both circuits are powered up it will be necessary for them to have each others address in the “Destination Address” register. |
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Similar Description - RF650-868 |
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