In Development
®
NOKOTA SOS-OEA V1.5 Multi-mode Mesh Network Protocol
•
Network Configurable Analog, Digital and Serial I/O Ports
•
3 V, Very Low Current Operation plus Sleep Mode
•
FCC 15.249 Certified
•
DM2100
916.50 MHz
The DM2100 is a 916.5 MHz transceiver module designed for wireless industrial sensor applica
tions. The DM2100 is equipped with seven I/O ports. Each port can be configured as an analog
input, a digital input, or a digital output. The DM2100 is also equipped with a serial data port. The
communication range of the DM2100 in an “open field” environment is typically 200 meters/hop.
The DM2100 combines RFM’s low-current ASH radio technology with low-power microprocessor
technology to achieve very long battery life. The DM2100 employs NOKOTA’s SOS-OEA V1.5
multi-mode mesh network protocol, which provides robust and flexible wireless network routing, a
rich application command set, and a powerful and easy-to-use network management utility. The
DM2100 is certified under FCC 15.249 regulations.
Absolute Maximum Ratings
Rating Value Units
All Input/Output Pins -0.3 to +4.0 V
Non-Operating Ambient Temperature Range -50 to +100
Electrical Characteristics
Characteristic Sym Notes Minimum Typical Maximum Units
Operating Frequency f
Modulation Type OOK
RF Encoded Data Transmission Rate 4.8 kb/s
Receive Mode:
Average Input Current, 3 Vdc Supply I
Input Signal for 10
Transmit Mode:
Peak Input Current, 3 Vdc Supply I
Peak Output Power P
Sleep Mode Average Input Current, 3 Vdc Supply I
Analog Input Measurement Range (10-bit ADC) 0 V
Analog Input Impedance 2500 ohms
Digital Output Source Current 0.5 mA
Digital Output Sink Current 1mA
Reference Crystal Accuracy ±200 ppm
Serial Port Data Rate 9.6 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
-
o
C
916.30 916.70 MHz
2.85 3.7 Vdc
-40 +85
Transceiver
Module
4mA
-100 dBm
13.5 mA
1mW
10 µA
DD
V
P-P
o
C
1
TR 1000
ASH
Transceiver
3 VDC
3 VDC
CNTRL0
CNTRL1
RXDATA
TXM O D
Voltage
Reset
Voltage
Regulator
RSSI
Low
D M 2100 B lock D iagram
GRN
YEL
RED
M S P 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/RSSI
RTS
CTS
TXD
RXD
GND
J1
GND VIN
VREN VDD TD0 TD1 TWS TCK RST CFG0CFG1CFG2CFG3 GND
56789104321
Figure 1
DM2100 Theory of Operation
The major components of the DM2100 include the
TR1000 ASH transceiver and the Texas Instruments
MSP430F148 microcontroller. The TR1000 operates on
916.5 MHz, with a nominal output power of 1 mW. The
MSP430F148 operates from an internal oscillator
referenced to an external 32.768 kHz “watch” crystal.
The MSP430F148 UART is used to provide a CMOS
serial interface on connector J2. The microcontroller’s
general purpose I/O pins are also available on connector J2 for external monitoring or control. Each of
11 12 13 14
these pins can be separately configured through the RF
network as a logic input, a logic output, or an analog
input. 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.
GP1 - GP7 can be used in any configuration needed by
the application. The three LEDs on the DM2100 display
RF communication activity.
DM2100 operation is based on NOKOTA’s SOS-OEA
V1.5 multi-mode mesh network protocol, which sup
ports data and command transfers through both the se
rial interface and the RF channel. See the SOS-OEA
V1.5 Protocol User’s Guide for further details.
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2
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