DM1810-434MN-V - RFM - Datasheet.Live

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DM1810-

434MN-V

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 fO433.72 434.12 MHz

Modulation Type OOK

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-101.5 dBm

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

Peak Transmit Input Current, No External Power Supply Load ITP 28.5 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 DM1810-434MN-V is the 433.92 MHz field node module in the DM1810 family of RF transceiv-

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

toring 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.

•Field Node with Host Serial Interface

•Compatible with RFM miniMESHTM Network Protocol

•3 V, Very Low Current Operation

•Ready-to-Use OEM Module 433.92 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 %

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Theory of Operation

The major components of the DM1810- 434MN-V

include an RFM TR7000 ASH transceiver and a Micro-

chip PIC16F689 microcontroller. The TR7000 oper-

ates 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 com-

panion interface board, the IM1800, is also available

with USB bridge circuitry to interface the DM1810-

434MN-V to a host PC. Three of the 16F689 I/O pins

are configured for external monitoring or control. Digi-

tal 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.

The DM1810-434MN-V 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 DM1810-434MN-V 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.

TXM O D

RX DATA

CNTRL1

CNTRL0

PIC

16F689

µP

D M 1810-434M N -V B lock D iagram

LED 1

LED 2

TR 7000

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

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.

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DM1810-434MN-V I/O Pad Descriptions

CAUTION: Electrostatic Sensitive Device. Observe precautions when handling.

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D M 1810-434M N -V I/O Pad Labels

DIG ITAL O U T

SERIA L TX

SERIAL RX

GND

ANALOG IN

DIG ITAL IN

BIND

VOUT

VIN

GND

RFIO

GND

Figure 2

1.485

DM 1810-434M N-V 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

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

.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

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2.30 1.71

1.0

D M 1810

D M 1810-434M N -V A ntenna D etail

Edge of host PC B

0.25 inches clearance required

around antenna and beyond

antenna tip; do not place

antenna on host PC B

D im e n s io n s in in c h e s .

Figure 4

Note: Specifications subject to change without notice.