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LM Technologies LM780 Integration Notes

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LM780 Module Integration Notes

Document Version: 1.2

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Page 1 LM780 Module Integration Notes Document Version: 1.2...
Page 2: Version History
Version History Version Date Description v1.0 07/06/2010 First Version v1.1 22/10/2012 1. Add information about pin connections 2. Add information about Reset Circuit v1.2 13/03/2013 1. Update PIO information for Ring Indicator, Carrier Detect and other functions Contents General Guidelines -Module Positioning ..................3 Pin Connections .........................
Page 3: Pin Connections
LM780 Module Integration Notes v1.2 1 General Guidelines -Module Positioning LM780 module includes on-board antenna and RF tracks on the PCB board which necessitates the customer board/end product hardware designer to follow recommended guidelines during placement of LM780 modules in customer product.
Page 4 LM780 Module Integration Notes v1.2 UART_Tx Host UART Rx UART_Rx Host UART Tx SPI_MISO Solder pad on main PCB SPI_MOSI Solder pad on main PCB SPI_CSB Solder pad on main PCB SPI_CLK Solder pad on main PCB 20 (PIO 2) Ring Indication This pin works similar to a modem Ring Indication.
Page 5 AT Command Manual more information. The Reset and LED Circuit of the LM780 module is shown below. A push button can be included in the reset circuit to pull the Reset PIN3 low to reset the module. Reset and LED Circuit Page 5 of 5 ©2013 LM Technologies Ltd...