Murata Electronics North America DM2200A Data Sheet
In Development
®
RFM Multitasking VersaMESHTMV2.0 Network Protocol
•
Analog, Digital and Serial I/O Ports
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3 V, Very Low Current Operation plus Sleep Mode
•
FCC 15.247 Certified
•
The DM2200-916VM is a 916.5 MHz transceiver module designed for wireless industrial sensor ap
plications. The transceiver module is equipped with two ADC inputs, three digital inputs, two digital
outputs and a serial port. The communication range of the DM2200-916VM in an “open field” envi
ronment is typically 600 meters/hop. The DM2200-916VM combines RFM’s low-current ASH radio
technology with low-power microprocessor technology to achieve very long battery life. The
DM2200-916VM employs RFM’s VersaMESH
bust wireless network routing, an integrated multitasking operating system, and an extensive appli
cation command set. The DM2200-916VM is certified under FCC 15.247 regulations.
Absolute Maximum Ratings
Rating Value Units
All I/O Pins Except VIN -0.3 to +4.0 V
Non-Operating Ambient Temperature Range -50 to +100
TM
V2.0 mesh network protocol, which provides ro
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o
C
DM2200-
916VM
916.50 MHz
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-
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Transceiver
Module
Electrical Characteristics
Characteristic Sym Notes Minimum Typical Maximum Units
Operating Frequency f
Modulation Type OOK on BPSK Spreading Code
RF Encoded Data Transmission Rate 9.6 kb/s
Receive Mode:
Average Input Current, 5 Vdc VIN Supply I
Pulse Input Signal for 10
Transmit Mode:
Peak Input Current, 5 Vdc VIN Supply I
Peak Transmitter Output Power P
Average Sleep Mode Input Current, 5 Vdc VIN Supply I
Analog Input Measurement Range (12-bit ADC) 0 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 Data Rate 19.2 kb/s
Internal Power Supply Input Voltage Range 3.1 14.0 Vdc
External Power Supply Voltage Range V
External Power Supply Voltage Ripple 10 mV
Operating Ambient Temperature Range T
-3
BER, 25 °C
O
R
TP
O
S
DD
A
916.30 916.70 MHz
4.5 mA
-102 dBm
32 mA
10 dBm
68 µA
DD
2.9 3.7 Vdc
-40 +85
V
P-P
o
C
1
TR 8100
ASH
Transceiver
3 VDC
3 VDC
CFGCLK
CFGDAT
RXDATA
TXM O D
Voltage
Reset
Voltage
Regulator
CFG
RSSI
Low
D M 2 2 0 0 B lo c k D ia g r a m
GRN
YEL
RED
M SP 430F148
M icrocontroller
14
13
12
11
10
9
8
7
6
5
4
3
2
1
J2
GND
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0/R SSI
RTS
CTS
TXD
RXD
GND
J1
GND VIN
VREN VDD TD0 TD1 TWS TCK RST CFG0CFG1CFG2CFG3 GND
56789104321
Figure 1
DM2200-916VM Theory of Operation
The major components of the DM2200-916VM include
the TR8100 ASH transceiver and the TI MSP430F148
microcontroller. The TR8100 operates on 916.5 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 is used to provide a CMOS
serial interface on connector J2. The microcontroller’s
I/O pins are also available on connector J2 for external
11 12 13 14
monitoring or control. Note that GP0 is dedicated to
measuring the value of the received signal strength
indicator (RSSI) circuit and should always be set as an
analog input. The three LEDs on the transceiver module
display RF communication activity.
DM2200-916VM operation is based on RFM’s multi-
TM
tasking VersaMESH
network protocol, which supports
data and command transfers through both the serial in
TM
terface and the RF channel. See the VersaMESH
Pro
tocol User’s Guide for further details.
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