DM1810-916MN - Murata Electronics North America

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DM1810-

916MN

Rating Value Units

All Input/Output Pins Except VIN -0.3 to +3.3 V

Non-Operating Ambient Temperature Range -40 to 85 oC

Absolute Maximum Ratings

Electrical Characteristics

Characteristic Sym Notes Minimum Typical Maximum Units

Operating Frequency fO916.30 916.70 MHz

Modulation Type OOK on BPSK Spreading Code

RF Encoded Data Transmission Rate 4.8 kb/s

Average Receive Input Current, No External Power Supply Load IR5.5 mA

Receiver Input Signal for 10-3 BER, 25 °C-100 dBm

Average Transmit Input Current, No External Power Supply Load ITA 15.75 mA

Peak Transmit Input Current, No External Power Supply Load ITP 32 mA

Peak Transmitter Output Power PO10 mW

Analog Input Measurement Range (10-bit ADC) 0 VOUT V

Analog Input Signal Source Impedance 10 K

Bind Input, Digital Input and Serial RX Logic High 2.4 V

Bind Input, Digital Input and Serial RX Logic Low 0.45 V

Digital Output and Serial TX Logic High, No Load 2.4 V

Digital Output and Serial TX Logic Low, No Load 0.3 V

The DM1810-916MN is the 916.50 MHz field node module in the DM1810 family of RF transceiv-

ers. The DM1810 family is designed for adding wireless mesh network connectivity to a wide range

of monitoring and control systems. The DM1810-916MN is equipped with a serial I/O port to inter-

face 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 DM1810-916MN combines RFM’s very low current ASH radio tech-

nology with low power microcontroller technology to achieve long battery life. This module is com-

patible with RFM miniMESHTM network protocol, which provides “plug-and-play” multicast mesh

network routing. The DM1810-916MN is certified for operation under FCC 15.247 and Canadian

RSS 210 regulations.

•Field Node with Host Serial Interface

•Compatible with RFM miniMESHTM Network Protocol

•3 V, Very Low Current Operation

•Ready-to-Use OEM Module 916.50 MHz

Transceiver

Module

DEVELOPMENT KIT

(Info Click here)

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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 9.6 kb/s

Average Sleep Input Current, No External Power Supply Load ISA 60 µA

Power Supply Input Voltage Range, -40 to +85 oC VIN 3.1 10 V

Power Supply Input Voltage Range, 0 to +85 oC VIN 2.6 10 V

Regulated Power Supply Output Voltage, VIN 3.1 to 10 V VOUT 3.0 Vdc

Regulated Power Supply Voltage Ripple 10 mVP-P

Relative Humidity Range, Non-Condensing RH 10 90 %

Theory of Operation

The major components of the DM1810-916MN include

an RFM TR8100 ASH transceiver and a Microchip

PIC16F689 microcontroller. The TR8100 operates on

a frequency of 916.50 MHz, at a nominal output power

of 10 mW.

The 16F689 provides a 9.6 kb/s serial interface for

communication with a host microcontroller. A compan-

ion interface board, the IM1800, is available with USB

bridge circuitry to interface the DM1810-916MN to a

host PC. Three of the 16F689 I/O pins are configured

for external monitoring or control. Digital In is config-

ured as a logic input with a weak pull-up for sensing a

contact closure to a ground pad. Digital Out is config-

ured 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.

The DM1810-916MN firmware is based on RFM’s

miniMESH network protocol, which utilizes time-

synchronized 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, simplify-

ing commissioning and operating logistics.

The DM1810-916MN application programming inter-

face (API) provides straightforward, flexible support for

the serial port, ADC input, digital input and digital out-

put, 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.

DM1810-916MN FCC Certification

The DM1810-916MN hardware has been certified for

operation under FCC Part 15 Rules, Section 15.247.

The antenna(s) used for this transmitter must be in-

stalled to provide a separation distance of at least

20 cm from all persons and must not be co-located or

operating in conjunction with any other antenna or

transmitter.

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 DM1810-916MN transceiver assembly, FCC

ID: HSW-DM1810A. WARNING: This device oper-

ates under Part 15 of the FCC rules. Any modification

to this device, not expressly authorized b RFM, may

void the user’s authority to operate this device.

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TXM O D

RX DATA

CNTRL1

CNTRL0

PIC

16F689

µP

D M 1810-916M N B lock D iagram

LED 1

LED 2

TR 8100

ASH

Transceiver

GND

SERIAL TX

SERIAL RX

DIGITAL OUT

ANALOG IN

DIGITAL IN

BIND

GND

VOUT

VIN

3 V

Reg

GND

J1-1

J1-2

J1-3

J1-4

J1-5

J1-6

J1-7

J1-8

J1-9

J1-10

J3-2

J3-1

J3-3

RSSI

J4-1

J4-2

Figure 1

Canadian Department of Communications Industry

Notice - IC: 4492A-DM1810A

This apparatus complies with Health Canada’s Safety

Code6/ICRSS210. To prevent radio interference to

the licensed service, this device is intended to be op-

erated indoors and away from windows to provide

maximum shielding. Equipment (or its transmit an-

tenna) that is installed outdoors may be subject to

licensing.

ICES-003

This digital apparatus does not exceed the Class B

limits for radio noise emissions from digital apparatus

as set out in the radio interference regulations of

Industry Canada.

Le present appareil numerique n’emet pas de bruits

radioelectriques depassant les limites applicables aux

appareils numeriques de Classe B prescrites dans le

reglement sur le brouillage radioelectrique edicte par

Industrie Canada.

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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 regu-

lated 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 com-

mand.

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 (de-

fault), 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.

DM1810-916MN I/O Pad Descriptions

CAUTION: Electrostatic Sensitive Device. Observe precautions when handling.

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D M 1810-916M N I/O P ad Labels

DIG ITA L O U T

SERIAL TX

SERIAL RX

GND

ANALOG IN

DIG ITA L IN

BIND

VOUT

VIN

GND

RFIO

GND

Figure 2

1.485

DM 1810-916M N SM T M ounting Pattern

1.000

.1 3 0 .0 9 0.0 9 0

.2 0 0 .2 0 0

.070 TY P

Dim ensions in inches. PCB plus com ponent height is .170 m ax;

PC B plus antenna height is 2.15 m ax

.100 TY P

.1 2 0 .1 8 0

.1 0 0

.1 2 0

.0 9 5

P la c e .1 0 0 u n p la te d

antenna clearance hole

under antenna pad (do

not solder antenna pad)

Figure 3

Note: Specifications subject to change without notice.