User's Manual

ManualsBrandsDust Networks ManualsElectronicsSmart Mesh Wireless Mote

PRELIMINARY Confidential

M2x40 Mote Datasheet Dust Networks™ 1

SmartMesh-XD

M2140/M2040

2.4 GHz Wireless Mote

Product Description

Dust Network’s network-ready SmartMesh-XD™ M2x40 allows OEMs to build solutions for the global market using ultra low-power,

highly reliable system-on-chip (SoC) mesh networking solutions. The M2x40 combines a microprocessor and a standards-based 802.15.4

radio with robust networking capabilities built on top of the industry-leading Time Synchronized Mesh Protocol (TSMP) pioneered by Dust

Networks.

The M2x40 is tailored for use in battery- and line-powered wireless devices for applications that demand proven performance and

scalability. The innovative radio design in the M2x40 operates in the global license-free 2.4 GHz band, with 80% less receiver current than

comparable radios in the market. The combination of extremely high reliability and low power consumption enables applications that

require very low installation cost for low-maintenance, long-term deployments. The M2x40 provides all the functionalities of a mote in an

easy-to-integrate Mote-on-Chip™ (MoC). The multi-functional interface of the M2x40 gives it the flexibility to be used in a wide variety

of applications, from industrial process monitoring to building control to machine health monitoring. The M2x40 requires no embedded

programming, enabling OEMs to reduce the development time and cost for wireless sensor networking solutions.

About SmartMesh®

Dust Networks SmartMesh

products combine robust networking capabilities with TSMP, pioneered by Dust Networks, and standards-

based motes to provide proven wireless sensor networking systems. SmartMesh

systems achieve high network reliability in the face of

unpredictable or harsh RF environments, utilize frequency hopping for interference rejection and have a typical battery life of 5-10 years.

Each node in a SmartMesh-based network is a router, offering mesh-to-the-edge™ advantage for easy network integration, installation and

maintenance. With a flexible platform and predictable network performance, OEMs can wirelessly enable a whole host of solutions for

their industrial automation, building automation and defense markets.

Key Features

Ultra Low Power Consumption

• Innovative radio design that consumes 80% less

power in receive mode than competing solutions

• Delivers additional 5X increase in battery life

• Automatic network-wide coordination for efficient

power usage

Reliable Networking

• Uses the Time-Synchronized Mesh Protocol

(TSMP) for high reliability (> 99.9% typical

network reliability)

• Frequency hopping for interference rejection

• Mesh networking for built-in redundancy

• Every M2x40 acts as both an endpoint and a router,

increasing network reliability: mesh-to-the-edge™

• Automatic self-organizing mesh networking

capability built-in

Easy Integration

• M2x40 provides all the functionality of a mote with zero

embedded programming, or complex configuration

• Complete RF stage—balun, antenna matching circuitry,

Power Amplifier, and antenna connector included

• High-level Data Link Control (HDLC) serial interface

with bidirectional flow control

• Industrial temperature range –40 °C to +85 °C

• FCC, IC and CE modular RF certifications (pending)

802.15.4 Standard Radio

• Global 2.4 GHz license-free band: suitable for use in

North America, Europe and most of Asia

• +8 dBm (6.3 mW) conducted RF output power

• –90 dBm receiver sensitivity

• 300 m outdoor range (typical)

• Direct-sequence spread spectrum (DSSS) for additional

interference rejection

Summary of content (20 pages)

PAGE 1
PRELIMINARY Confidential SmartMesh-XDTM M2140/M2040 2.4 GHz Wireless Mote Product Description Dust Network’s network-ready SmartMesh-XD™ M2x40 allows OEMs to build solutions for the global market using ultra low-power, highly reliable system-on-chip (SoC) mesh networking solutions. The M2x40 combines a microprocessor and a standards-based 802.15.4 radio with robust networking capabilities built on top of the industry-leading Time Synchronized Mesh Protocol (TSMP) pioneered by Dust Networks.
PAGE 2
PRELIMINARY Confidential Table of Contents 1.0 Absolute Maximum Ratings ................................................................................4 2.0 Normal Operating Conditions .............................................................................4 3.0 Electrical Specifications .....................................................................................5 4.0 Timing Values.....................................................................................................
PAGE 3
PRELIMINARY 10.4 11.0 Confidential Industrial Environment Operation...................................................................18 Ordering Information .......................................................................................
PAGE 4
PRELIMINARY 1.0 Confidential Absolute Maximum Ratings The absolute maximum ratings shown below should under no circumstances be violated. Permanent damage to the device may be caused by exceeding one or more of these parameters. Table 1 Absolute Maximum Ratings Parameter Min Typ Max Units Supply voltage (Vcc to GND) –0.3 3.6 V Voltage on any digital I/O pin –0.3 VCC + 0.3 V Comments up to 3.
PAGE 5
PRELIMINARY Confidential Power amplifier enabled TBD µA Power amplifier disabled TBD µA Storage and operating temperatures -40 Maximum allowed temperature ramp during operation Operating relative humidity 10 Assuming 80 byte packets, 1 per 2 minutes, data-only mote, 3V, 25 °C +85 °C 8 °C/min –40 °C to +85 °C 90 % RH Non-condensing Max Units *OTAP = over-the-air programming of motes Unless otherwise noted, Table 3 assumes Vcc is 3.0 V.
PAGE 6
PRELIMINARY Digital Signal Min Typ Max Confidential Units Comments * Digital current Output source (single pin, multifunction I/O configured as output) 0.6 mA 25 °C Output sink (single pin, multifunction I/O configured as output) 0.6 mA 25 °C 50 nA 25 °C Input leakage current * This current level guarantees that the output voltage meets VOH and VOL specifications above. 4.
PAGE 7
PRELIMINARY Parameter Min Typ Max Confidential Units Comments Output power, conducted Power amplifier enabled +8 dBm VDD = 3 V, 25 °C Power amplifier disabled –3 dBm VDD = 3 V, 25 °C Indoor 100 m Outdoor 300 m Indoor 25 m Outdoor 200 m Range* Power amplifier enabled: 25 °C, 50% RH, 1 meter above ground, +2 dBi omni-directional antenna Power amplifier disabled: * Actual RF range performance is subject to a number of installation-specific variables including, but not restricted t
PAGE 8
PRELIMINARY 6.0 Confidential Pinout The M2x40 has two 11-pin Samtec MTMM-111-04-S-S-175-3 (or equivalent) connectors on the bottom side for handling all of the I/O. The third pin in each of the connectors is not populated, and serves as a key for alignment. The connectors are mounted on opposite edges of the long axis of the M2x40. 6.1 M2x40 Pinout The M2x40 provides a bidirectional flow-controlled serial interface (serial protocol is specified in section Error! Reference source not found.).
PAGE 9
PRELIMINARY 7.0 Mote Boot Up 7.1 Power-on Sequence Confidential The M2x40 mote has internal power-on-reset circuits that ensure that the mote will properly boot. However, for the poweron-reset circuitry to function properly, the external power supply must meet the timing shown in Figure 1 and specified in Table 10.
PAGE 10
PRELIMINARY Confidential Vcc Inrush Current (Power On with Supply Impedance of 1 Ohm) 1000 Current (mA) 750 500 250 0 0 50 100 150 200 250 Time (us) Figure 4 VCC Inrush Current 7.3 Serial Interface Boot Up 7.3.1 M2x40 Serial Interface Boot Up ¯¯¯¯¯¯¯ line is high (inactive). The M2x40 serial interface boots within boot_delay (see Error! Upon M2x40 power up, the MT_CTS Reference source not found.
PAGE 11
PRELIMINARY Figure 6 Confidential Operation of Time Pin ¯¯¯ Signal Status LED 8.2 ¯¯¯ . This signal indicates network connectivity information The M2x40 provides an output that can be used to drive a status LED which is most useful during mote installation. Alternatively, the mote’s network status may be polled via serial using the Get Parameter request with the mote state parameter (see section Mote Serial API Guide).
PAGE 12
PRELIMINARY Confidential The following diagram illustrates the pins used in the handshaking protocol.
PAGE 13
PRELIMINARY Table 13 Confidential Pin Usage Pin Usage RX, TX Used for serial data flow into and out of the mote. ¯¯¯¯¯¯¯ MT_RTS This signal goes active low when the mote is ready to send a serial packet. The signal ¯¯¯¯¯¯¯ signal from the microprocessor goes active low (indicating stays low until the SP_CTS readiness to receive a packet) or the ack_delay timeout (see Error! Reference source not found.) expires.
PAGE 14
PRELIMINARY Confidential Timeouts T1, T2, and T3 are defined as follows (refer to Error! Reference source not found. for values): T1: interbyte_timeout—Maximum time between the transmit module sending a byte and the receiving module acknowledging the byte using CTS (requests the next byte). T2: interpacket_delay—For communications into the mote, the minimum time after the mote receives the last byte of a packet before it can start receiving the next packet.
PAGE 15
PRELIMINARY Figure 10 Packet Transmission to Mote 9.0 Packaging Description 9.
PAGE 16
PRELIMINARY Figure 12 9.2 Confidential M2x40 Mote Footprint Soldering Information The M2x40 can be hand soldered with a soldering iron at 230 °C. The soldering iron should be in contact with the pin for 10 seconds or less. The M2x40 is also suitable for eutectic PbSn reflow. 10.0 Regulatory and Standards Compliance 10.1 FCC Compliance The M2x40 mote complies with Part 15.247 modular (Intentional Radiator) of the FCC rules and regulations.
PAGE 17
PRELIMINARY 4. Confidential An unintentional radiator scan must be performed on the device integrating the M2x40 mote, per FCC rules and regulations, CFR Title 47, Part 15, Subpart B. See FCC rules for specifics on requirements for declaration of conformity. 10.1.2 FCC-approved Antennae The following are FCC-approved antenna specifications for the M2x40 Table 14 FCC-approved Antenna Specifications for the M2x40 Gain Pattern +2 dBi maximum 10.1.
PAGE 18
PRELIMINARY Confidential of Radio Equipment and Telecommunication Terminal Equipment directive 99/5/EC with requirements covering EMC directive 89/336/EEC, and Low voltage directive 73/23/EEC. 10.3.2 European Compliance If the M2140 and M2040 motes are incorporated into a product, the manufacturer must ensure compliance of the final product to the European harmonized EMC and low-voltage/safety standards.
PAGE 19
PRELIMINARY Confidential Hayward, CA 94544 Toll-Free Phone: 1 (866) 289-3878 Website: www.dustnetworks.com Email: sales@dustnetworks.
PAGE 20
PRELIMINARY Confidential Trademarks Dust Networks™, the Dust Networks logo, SmartMesh-XT™, SmartMesh-XD™, Marconi™, mesh-to-the-edge™, and Mote-on-Chip™ are trademarks of Dust Networks, Inc. Dust® and SmartMesh® are registered trademarks of Dust Networks, Inc. All third-party brand and product names are the trademarks of their respective owners and are used solely for informational purposes.