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MDEV-868-PRC Datasheet(PDF) 44 Page - Linx Technologies |
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MDEV-868-PRC Datasheet(HTML) 44 Page - Linx Technologies |
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44 / 55 page ![]() – – – – 82 83 Figure 86 shows a typical circuit using the HumPRCTM Series transceiver with an external microcontroller. In this example, C0 is low and C1 is high, so S0–S3 are outputs and S4–S7 are inputs. The inputs are connected to buttons that pull the lines high. Internal pull-down resistors keep the lines from floating when the buttons are open. The outputs are connected to external application circuitry. LATCH_EN is low, so the outputs are momentary. ACK_OUT and MODE_IND are connected to LEDs to provide visual indication to the user. PB is connected to a button and pull-down resistor to initiate the Join Process when the button is pressed. In this circuit, the Command Data Interface is connected to a microcontroller for using some of the advanced features. The microcontroller controls the state of the ACK_EN line. It can receive a command, perform an action and then take the line high to send Acknowledgement packets. This lets the user on the other end know that the action took place and not just that the command was received. Figure 86: HumPRCTM Series Transceiver Basic Application Circuit with a Microcontroller µ RXD TXD GND VCC GND GND GND GND GND GND GND GND GNDVCC GND VCC GPIO GND 17 GND 18 S6 2 S7 1 MODE_IND 30 ACK_OUT 31 GND 32 S5 3 S4 4 ANT 19 GND 20 GND 16 GND 15 GND 14 GND GND GND VCC VCC VCC VCC GPIO GPIO GND VCC GND GND GND GND GND GND GND GND GND GND VCC S4 S5 S6 S7 VCC VCC VCC VCC VCC GND VCC VCC GND VCC GND VCC GND 17 GND 18 S6 2 S7 1 MODE_IND 30 ACK_OUT 31 GND 32 S5 3 S4 4 ANT 19 GND 20 GND 16 GND 15 GND 14 GND VCC GND GND GND GND GND GND GND GND GND GNDVCC VCC VCC VCC VCC GND VCC GND VCC GND VCC VCC GND 17 GND 18 S6 2 S7 1 MODE_IND 30 ACK_OUT 31 GND 32 S5 3 S4 4 ANT 19 GND 20 GND 16 GND 15 GND 14 VCC Figure 85: HumPRCTM Series Transceiver Basic Application Circuits for Bi-directional Remote Control A B |
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