DEVELOPMENT KIT (Info Click here) DM1810434MN-V * Field Node with Host Serial Interface * Compatible with RFM miniMESHTM Network Protocol * 3 V, Very Low Current Operation * Ready-to-Use OEM Module The DM1810-434MN-V is the 433.92 MHz field node module in the DM1810 family of RF transceivers. The DM1810 family is designed for adding wireless mesh connectivity to a wide range of monitoring and control systems. The DM1810-434MN-V is equipped with a serial I/O port to interface to a host microcontroller. The module also includes an analog input, a logic input, and a logic output for monitoring and control. Radio communications range in an "open field" environment is typically 600 meters/hop. The DM1810-434MN-V combines RFM's very low current ASH radio technology with low power microcontroller technology to achieve long battery life. This module is compatible with RFM miniMESHTM network protocol, which provides "plug- and-play" multicast mesh network routing. The DM1810-434MN-V is certified for operation under ETSI I-ETS 300 220 regulations. 433.92 MHz Transceiver Module Absolute Maximum Ratings Rating All Input/Output Pins Except VIN Non-Operating Ambient Temperature Range Value -0.3 to +3.3 -40 to +85 Units V o C Electrical Characteristics Characteristic Operating Frequency Sym fO Notes Minimum Typical 433.72 Modulation Type Maximum Units 434.12 MHz OOK RF Encoded Data Transmission Rate Average Receive Input Current, No External Power Supply Load IR -3 Receiver Input Signal for 10 BER, 25 C Average Transmit Input Current, No External Power Supply Load ITA Peak Transmit Input Current, No External Power Supply Load ITP Peak Transmitter Output Power PO Analog Input Measurement Range (10-bit ADC) Digital Output and Serial TX Logic Low, No Load www.RFM.com E-mail: info@rfm.com (c)2008 by RF Monolithics, Inc. 5.5 mA -101.5 dBm 15.75 mA 10 0 mA mW VOUT V 10 K 2.4 Bind Input, Digital Input and Serial RX Logic Low Digital Output and Serial TX Logic High, No Load kb/s 28.5 Analog Input Signal Source Impedance Bind Input, Digital Input and Serial RX Logic High 4.8 V 0.45 2.4 V V 0.3 V Page 1 of 6 DM1810-434MN-V - 4/17/08 Electrical Characteristics Characteristic Sym Notes Minimum Typical Maximum Units Digital Output Source Current, 1K load 1.1 mA Digital Output Sink Current, 1K load 1.2 mA Serial Port Data Rate 1.2 Average Sleep Input Current, No External Power Supply Load o Power Supply Input Voltage Range, -40 to +85 C o Power Supply Input Voltage Range, 0 to +85 C Regulated Power Supply Output Voltage, VIN 3.1 to 10 V ISA 60 VIN 3.1 VIN 2.6 VOUT www.RFM.com E-mail: info@rfm.com (c)2008 by RF Monolithics, Inc. RH 10 kb/s A 10 10 3.0 Regulated Power Supply Voltage Ripple Relative Humidity Range, Non-Condensing 9.6 V V Vdc 10 mVP-P 90 % Page 2 of 6 DM1810-434MN-V - 4/17/08 D M 1 8 1 0 -4 3 4 M N -V B lo c k D ia g r a m G N D J 3 -3 J 3 -2 G N D J 3 -1 T R 7 0 0 0 A S H T r a n s c e iv e r J 1 -1 0 G N D C N T R L 0 J 1 -9 S E R IA L T X C N T R L 1 J 1 -8 S E R IA L R X J 1 -7 D IG IT A L O U T J 1 -6 A N A L O G J 1 -5 D IG IT A L IN J 1 -4 B IN D J 1 -3 V O U T J 1 -2 V IN J 1 -1 G N D R X D A T A T X M O D P IC 1 6 F 6 8 9 P R S S I L E D D 1 J 4 -1 D 2 J 4 -2 L E D 1 3 V R e g IN 2 Figure 1 Theory of Operation The major components of the DM1810- 434MN-V include an RFM TR7000 ASH transceiver and a Microchip PIC16F689 microcontroller. The TR7000 operates on a frequency of 433.92 MHz, at a nominal output power of 10 mW. The 16F689 provides a 9.6 kb/s serial interface for communication with a host micro- controller. A companion interface board, the IM1800, is also available with USB bridge circuitry to interface the DM1810434MN-V to a host PC. Three of the 16F689 I/O pins are configured for external monitoring or control. Digital In is configured as a logic input with a weak pull-up for sensing a contact closure to a DM1810 ground pad. Digital Out is configured a logic output. Analog In is configured as a 10-bit analog-to-digital input. The DM1810 includes two LEDs that indicate the module's operating mode. www.RFM.com E-mail: info@rfm.com (c)2008 by RF Monolithics, Inc. The DM1810-434MN-V firmware is based on RFM's miniMESH network protocol, which utilizes timesynchronized redundant routing to provide robust, deterministic packet delivery though a network with up to 15 routers. Network configuration and maintenance features are built into the miniMESH protocol, simplifying commissioning and operating logistics. The DM1810-434MN-V application programming interface (API) provides straightforward, flexible support for the serial port, ADC input, digital input and digital output, including event messaging from field nodes. The firmware also includes several sleep cycling methods for extended battery life operation. Please refer to the DM1810 User's Guide and the AN1810 series Application Notes for installation and application programming information. See the RFM web site at www.RFM.com. Page 3 of 6 DM1810-434MN-V - 4/17/08 DM1810-434MN-V I/O Pad Descriptions Pin Name Description J1-1 GND This pad is a signal and power supply ground. J1-2 VIN This is the power supply input pad. The allowed input voltage range is 2.6 to 10 V. J1-3 VOUT VOUT tracks 50 to 100 mV below VIN when VIN is in the range of 2.6 to 3.1 V. When VIN is in the range of 3.1 to 10 V, VOUT is regulated at 3.0 Vdc. Up to 10 mA can be supplied from this pad for powering external circuits such as thermistor-resistor networks. External circuitry must not impress more than 10 mVp-p ripple on the regulated output voltage. J1-4 BIND This pad is connected to a logic input on the microcontroller, and is configured with a weak pull-up. When this pin is momentarily grounded to J1-1 or J1-10, the module is placed into the bind mode, allowing this module to be associated with other modules to form a network. J1-5 DIGITAL IN This pad is connected to a logic input on the microcontroller, and is configured with a weak pull-up, allowing both logic signals and contact closures referenced to J-1 or J-10 to be read. The value of this input is sent over the RF channel as a response to an RF command. The input voltage range on this pad is 0 to VOUT. Applying a voltage outside of this range may damage the module. J1-6 ANALOG IN This pad in the input to the microcontroller's 10-bit analog-to-digital (ADC) converter. The ADC input range is 0 to VOUT, referenced to J1-1 or J1-10. The input voltage range on this pad is 0 to VOUT. Applying a voltage outside of this range may damage the module. The ADC reading is sent over the RF channel as a response to an RF command. J1-7 DIGITAL OUT This pad is connected to a logic output on the microcontroller through a 1 kilohm resistor, which provides short-circuit protection. The value of this output is set or read over the RF channel as a response to an RF command. J1-8 SERIAL RX This pad is connected to the module's serial data input (USART). Data to this pin is received at 9.6 kb/s (default), using 8 data bits, no parity, one stop bit. The input voltage range on this pad is 0 to VOUT. Applying a voltage outside of this range may damage the module. J1-9 SERIAL TX This pad is connected to the module's serial data output (USART) through a 1 kilohm resistor, which provides short-circuit protection. Data from this pad is sent at 9.6 kb/s (default), using 8 data bits, no parity, one stop bit. J1-10 GND This pad is a signal and power supply ground. J3-1 GND This pad is a ground for the antenna port. J3-2 ANT This pad is the antenna port. J3-3 GND This pad is a ground for the antenna port. J4-1 D1 This pad is the LED 1 signal. J4-2 D2 This pad is the LED 2 signal. CAUTION: Electrostatic Sensitive Device. Observe precautions when handling. www.RFM.com E-mail: info@rfm.com (c)2008 by RF Monolithics, Inc. Page 4 of 6 DM1810-434MN-V - 4/17/08 D M 1 8 1 0 -4 3 4 M N -V I/O P a d L a b e ls G N D V IN V O U T G N D B IN D D IG IT A L IN A N A L O G D 1 IN R F IO D 2 D IG IT A L O U T G N D S E R IA L R X S E R IA L T X G N D Figure 2 D M 1 8 1 0 -4 3 4 M N -V S M T M o u n tin g P a tte r n 1 .4 8 5 .0 9 5 .1 2 0 .1 2 0 .1 0 0 T Y P .2 0 0 .0 9 0 .1 0 0 e .1 n n a e r a s o ld 0 0 u c le n te n e r a n p a ra n a n te la n p n te d c e h o le a d (d o n a p a d ) .0 7 0 T Y P P la c a n te u n d n o t .0 9 0 .2 0 0 .1 3 0 1 .0 0 0 .1 8 0 D im e n s io n s in in c h e s . P C B p lu s c o m p o n e n t h e ig h t is .1 7 0 m a x Figure 3 www.RFM.com E-mail: info@rfm.com (c)2008 by RF Monolithics, Inc. Page 5 of 6 DM1810-434MN-V - 4/17/08 D M 1 8 1 0 -4 3 4 M N -V A n te n n a D e ta il 2 .3 0 1 .7 1 D M 1 8 1 0 0 .2 5 in c h a ro u n d a n te n a n te e s a n n a n n c le a r a te n n a tip ; d o a o n h n c e r e q u ir e d a n d b e y o n d n o t p la c e o s t P C B 1 .0 E d g e o f h o s t P C B D im e n s io n s in in c h e s . Figure 4 Note: Specifications subject to change without notice. www.RFM.com E-mail: info@rfm.com (c)2008 by RF Monolithics, Inc. Page 6 of 6 DM1810-434MN-V - 4/17/08