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DM1800-916MN Datasheet(PDF) 2 Page - RF Monolithics, Inc |
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DM1800-916MN Datasheet(HTML) 2 Page - RF Monolithics, Inc |
2 / 4 page 2 Theory of Operation The major components of the DM1800-916MN include an RFM TR1000 ASH transceiver and a Microchip PIC16F688 microcontroller. The TR1000 operates on a frequency of 916.50 MHz, at a nominal output power of 1 mW. The 16F688 provides a 9.6 kb/s serial interface for communication with a host microcontroller. A compan- ion interface board is available with USB bridge cir- cuitry to interface the DM1800-916MN to a host PC. Three of the 16F688 I/O pins are configured for exter- nal monitoring or control. Digital In is configured as a logic input with a weak pull-up for sensing a contact closure to a ground pad. Digital Out is configured a logic output. Analog In is configured as a 10-bit ana- log-to-digital input. The DM1800 includes two LEDs that indicate the module’s operating mode. The DM1800-916MN is compatible with RFM’s miniMESH TM network protocol, which provides add-on “plug-and-play” mesh network routing to improve com- munication range and robustness. DM1800-916MN FCC Certification The DM1800-916MN hardware has been certified for operation under FCC Part 15 Rules, Section 15.249. This certification applies only when a DM1800-916MN is equipped with one of the following RFM antennas: helical antenna, RFM part number 500-1195-003 helical antenna, RFM part number 500-1195-003 WARNING: the DM1800-916MN must be re-certified if used with any antennas other than the two listed above. Contact RFM for further information if your ap- plication requires a special antenna configuration. FCC Notices and Labels This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference re- ceived, including interference that may cause unde- sired operation. A clearly visible label is required on the outside of the user’s (OEM) enclosure stating that this product con- tains a DM1800-916MN transceiver assembly, FCC ID: TE6-DM1800. WARNING: This device operates under Part 15 of the FCC rules. Any modification to this device, not ex- pressly authorized by RF Monolithics, Inc., may void the user’s authority to operate this device. T X M O D R X D A T A C N T R L 1 C N T R L 0 P I C 1 6 F 6 8 8 µ P D M 1 8 0 0 - 9 1 6 M N B l o c k D i a g r a m L E D 1 L E D 2 A S H T r a n s c e i v e r G N D S E R I A L T X S E R I A L R X D I G I T A L O U T A N A L O G I N D I G I T A L I N B I N D G N D V O U T V I N 3 V R e g G N D G N D J 1 - 1 J 1 - 2 J 1 - 3 J 1 - 4 J 1 - 5 J 1 - 6 J 1 - 7 J 1 - 8 J 1 - 9 J 1 - 1 0 J 2 - 2 J 2 - 1 J 2 - 3 Figure 1 |
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