DM2200-434VM - RFM - Datasheet.Live

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DM2200-

434VM

The DM2200-434VM is a 433.92 MHz transceiver module designed for wireless sensor network

applications. The module is equipped with seven general-purpose I/O ports that can be configured

as analog-to-digital converter inputs, digital inputs or digital outputs, plus three auxiliary digital I/O

ports. The communication range of the DM2200-434VM in an “open field” environment is typically

600 meters/hop. The DM2200-434VM combines RFM’s low-current ASH radio technology with

low-power microprocessor technology to achieve very long battery life. The DM2200-434VM em-

ploys RFM’s VersaMESHTM protocol, which provides robust wireless mesh network routing, an inte-

grated multitasking operating system, and an extensive set of application support commands. The

DM2200-434VM is certified for operation under ETSI I-ETS 300 220 regulations..

Rating Value Units

All I/O Pins Except VIN -0.3 to +4.0 V

Non-Operating Ambient Temperature Range -40 to +85 oC

Absolute Maximum Ratings

•RFM VersaMESHTM Versatile Mesh Network Protocol

•Up to 600 meters Module to Module range

•3 V, Very Low Current Operation plus Sleep Mode

•Analog, Digital and Serial I/O Ports

•Ready-to-Use OEM Module

Electrical Characteristics

Characteristic Sym Notes Minimum Typical Maximum Units

Channel Center Frequency fO434.92 MHz

Modulation Type DC-balanced OOK

RF Encoded Data Transmission Rate 9.6 kb/s

Receive Mode:

Average Input Current, 5 Vdc VIN Supply IR5.5 6.0 mA

Pulse Input Signal for 10-3 BER, 25 °C-104 dBm

Transmit Mode:

Peak Input Current, 5 Vdc VIN Supply ITP 30 36 mA

Peak Transmitter Output Power PO10 dBm

Average Sleep Mode Input Current, 5 Vdc VIN Supply IS65 70 µA

Analog Input Measurement Range (12-bit ADC) 0 VDD V

External Source Impedance to Analog Input 10 K

Digital Output Source Current, 1K Load 1 mA

Digital Output Sink Current, 1K Load 1.2 mA

Serial Port Default Data Rate 19.2 kb/s

Internal Power Supply Input Voltage Range 3.3 14.0 Vdc

External Power Supply Voltage Range VDD 2.9 3.7 Vdc

External Power Supply Voltage Ripple 10 mVP-P

Operating Ambient Temperature Range TA-40 +85 oC

433.92 MHz

Transceiver

Module

DEVELOPMENT KIT

(Info Click here)

DM2200-434VM Theory of Operation

The major components of the DM2200-434VM

wireless sensor network module include the TR7000

ASH transceiver and the TI MSP430F148 micro-

controller. The TR8100 operates on 433.92 MHz, with

a nominal output power of 10 mW. The MSP430F148

can operate referenced to either a 32.768 kHz or

6 MHz crystal.

The MSP430F148 UART provides a serial interface

on connector J2. The microcontroller’s eight general-

purpose I/O pins, GP0 - GP7 are available on con-

nector J2, along with four auxiliary digital I/O pins,

CFG0 - CFG3 on J1. General-purpose I/O pin GP0 is

dedicated to measuring the value of the received

signal strength indicator (RSSI) circuit and should

always be set as an analog input. Auxiliary digital I/O

pin CFG3 is always configured as a digital input to

provide a firmware reset function (logic high for normal

operation). GP1 through GP7 and CFG0 through

CFG2 can be configured as required by the applica-

tion. The three LEDs on the transceiver module

display RF communication activity.

DM2200-434VM operation is based on RFM’s

VersaMESHTM mesh network protocol, which supports

data and command transfers through both the serial

interface and the RF channel. See the DM2200 Sys-

tem User’s Guide and the DM2200 Software User’s

Guide for further details.

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56789104321

GND VIN

11 12 13 14

VREN VDD TD0 TD1 TW S TCK RST CFG0CFG1CFG2CFG3

(R eset)

GND

3 V D C

GRN

YEL

RED

TR 7000

ASH

Transceiver

RSSI

Low

Voltage

Reset

TXM O D

RXDATA

CNTRL1

CNTRL0

3 V D C Voltage

Regulator

D M 2200 B lock D iagram

GND

GP7

GP6

GP5

GP4

GP3

GP2

GP1

GP0/RSSI

RTS

CTS

TXD

RXD

GND

M SP 430F148

M icrocontroller

Figure 1

DM2200-434VM Applications

There are two ways to use the DM2200-434VM in an

application. The transceiver module can be used with

a companion application interface board, the

IM2200-1. The IM2200-1 has provisions for powering

the transceiver module from a USB cable, an external

unregulated DC supply such as a 5 Vdc “wall plug”

trans- former, an external regulated 3 Vdc power sup-

ply, or an external battery. The IM2200-1 also pro-

vides the choice of UART, RS232, or USB for a host

computer serial interface. In addition, the IM2200-1

includes captured- screw terminal strips for connecting

analog inputs, digital logic inputs, digital logic outputs

and form C relay outputs. Refer to the IM2200-1 data

sheet for additional details.

The DM2200-434VM can also be integrated into the

user’s own application board. The DM2200-434VM pin

descriptions are given in the Table on pages 4 and 5.

The transceiver module pin-out locations are show in

Figure 2, and the PCB layout for the mating connec-

tors is shown in Figure 3.

The operating range of the DM2200-434VM depends

critically on the antenna being located properly. When

using the standard DM2200-434VM antenna, care

should be taken to keep the antenna at least 0.5 inch

away from the sides of its enclosure. The enclosure

must be made from a plastic with low RF attenuation,

such as fiberglass, PVC or ABS.

The DM2200-434VM enclosure should be mounted so

the antenna is at least 4 feet off the ground, and ide-

ally 6 or more feet off the ground.

The DM2200-434VM has an on-board regulator input

on Pin J1-2. To use the on-board regulator, connect

J1-3 to J1-2 and apply a voltage to this connection of

at least 3.3 Vdc, but not greater than 14 Vdc, including

ripple variations. When running from the on-board reg-

ulator, up to 5 mA is available on J1-4 to operate

external circuitry. Any external circuitry connected to

J1-4 must not induce more that 10 mVP-P ripple on the

regulated 3 Vdc at this pin.

The DM2200-434VM can also be run from an

off-board regulated supply or a battery. In this case,

connect J1-3 to ground, leave J1-2 unconnected, and

apply the regulated supply or battery input to J1-4.

Note the input voltage range for J1-4 must be in the

range of 2.9 to 3.7 Vdc, with no more than 10 mVP-P

ripple.

Only pins J1-2 and J1-3 are rated to operate from a

supply voltage higher than 3.7 Vdc. Further, care must

be taken so that analog or logic inputs applied to the

transceiver module stay within the voltage range of 0

to VDD (voltage at J1-4). Applying a voltage outside of

the 0 to VDD voltage range to an analog or logic input

can damage the module.

The DM2200-434VM has current limiting protection re-

sistors on most of the I/O pins. These limit the current

that a logic output can source or sink. Any DM2200-

434VM pin defined as an output should be used only

to drive a high impedance load such as a CMOS logic

input or a MOSFET transistor.

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Pin Name Description

J1-1 GND This pin is connected to ground.

J1-2 VIN This pin is the input to the DM2200 on-board voltage regulator. The minimum input voltage to this pin is 3.3 V,

and the maximum input to this pin is 14.0 V.

J1-3 VREN This pin is the enable input for the DM2200 on-board regulator. To enable the on-board regulator, connect this

pin to J1-2. To disable the on-board regulator, connect this pin to ground.

J1-4 VDD

This pin is connected to the DM2200 positive power supply buss. When the module is powered from the

on-board regulator, this pin can provide up to 5 mA of current at 3.0 Vdc. Note this current adds to the receive,

transmit and sleep currents listed in the specifications on Page 1. The external load must not impress more

than 10 mV peak -peak ripple on the supply buss. If the on-board regulator is disabled, the module can be pow-

ered through this pin by an external 2.9 to 3.7 Vdc source (maximum ripple 10 mV peak-peak).

J1-5 TD0 This pin is only used for factory programming. It must be left unconnected in normal operation.

J1-6 TDI This pin is only used for factory programming. It must be left unconnected in normal operation.

J1-7 TWS This pin is only used for factory programming. It must be left unconnected in normal operation.

J1-8 TCK This pin is only used for factory programming. It must be left unconnected in normal operation.

J1-9 RST This pin is only used for factory programming. It must be left unconnected in normal operation (reset is CFG3).

J1-10 CFG0 This pin is an auxiliary digital I/O pin. The default configuration of this pin is a digital output.

J1-11 CFG1 This pin is an auxiliary digital I/O pin. The default configuration of this pin is a digital output.

J1-12 CFG2 This pin is an auxiliary digital I/O pin. The default configuration of this pin is a digital output.

J1-13 CFG3 This pin is a software reset pin. Logic high is normal operation. Logic low invokes software resets.

J1-14 GND This pin is connected to ground.

J2-1 GND This pin is connected to ground.

J2-2 RXD This pin is the serial data input (CMOS).

J2-3 TXD This pin is the serial data output (CMOS).

J2-4 CTS This pin is a serial data flow control input (CMOS).

J2-5 RTS This pin is a serial data flow control output (CMOS).

J2-6 GP0/RSSI This pin is an I/O pin dedicated to monitoring the RSSI circuit output. It is configured as an analog-to-digital

converter input. The RSSI signal can also be monitored externally at this pin.

J2-7 GP1

This pin is an I/O pin. The default configuration of this pin is a digital input with optional pulse counting capabil-

ity. A 24-bit register is maintained within the DM2200 to accumulate pulse counts. This input can count up to

10 pulses/second. This input supports interrupts, allowing pulse counting or alarm monitoring while the DM2200

is operating in a low current “sleep” mode.

J2-8 GP2 This pin is an I/O pin. The default configuration of this pin is a digital input. This input supports interrupts, allow-

ing alarm monitoring while the DM2200 is operating in a low current “sleep” mode.

J2-9 GP3 This pin is an I/O pin. The default configuration of this pin is a digital input.

J2-10 GP4 This pin is an I/O pin. The default configuration of this pin is a digital output.

J2-11 GP5 This pin is an I/O pin. The default configuration of this pin is a digital output.

J2-12 GP6 This pin is an I/O pin. The default configuration of this pin is an analog-to-digital converter input.

J2-13 GP7 This pin is an I/O pin. The default configuration of this pin is an analog-to-digital converter input.

J2-14 GND This pin is connected to ground.

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Pin Descriptions

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GND

CFG3

CFG2

CFG1

CFG0

RST

TCK

TW S

TD1

TD0

VDD

VREN

VIN

GND

GP7

GP6

GP5

GP4

GP3

GP2

GP1

GP0/RSSI

RTS

CTS

TXD

RXD

GND

D M 2200 Pin O ut

Figure 2

CAUTION: Electrostatic Sensitive Device. Observe precautions when handling.

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Note: Specifications subject to change without notice.

1.4

(3 5 .6 )

1.3

(3 3 .0 )

1.4

(3 5 .6 )

0.2

(5 .1 )

D M 2200 Interface C onnector

PC B Layout D etail

0.1

(2 .5 )

C onnectors are FC I E lectronics 66951-014 or equivalent

D im ensions in inches and (m m )

J1 J2

Figure 3