Datasheet

ManualsBrandsmoteiv ManualsAutomotiveTelos

Telos

Rev B (Low Power Wireless Sensor Module)

Moteiv Corporation Telos (Rev B) : PRELIMINARY Datasheet (12/5/2004) Page 1 of 28

Telos

Ultra low power IEEE 802.15.4 compliant wireless sensor module

Revision B : Humidity, Light, and Temperature sensors with USB

Product Description

Telos is an ultra low power wireless module

for use in sensor networks, monitoring

applications, and rapid application

prototyping. Telos leverages industry

standards like USB and IEEE 802.15.4 to

interoperate seamlessly with other devices.

By using industry standards, integrating

humidity, temperature, and light sensors,

and providing flexible interconnection with

peripherals, Telos enables a wide range of

mesh network applications. Telos Revision B is a drop-in replacement for Moteiv’s successful

Revision A design. Revision B includes increased performance, functionality, and expansion.

With TinyOS support out-of-the-box, Telos leverages emerging wireless protocols and the open

source software movement. Telos is part of a line of modules featuring on-board sensors to

increase robustness while decreasing cost and package size.

Key Features

• 250kbps 2.4GHz IEEE 802.15.4 Chipcon Wireless Transceiver

• Interoperability with other IEEE 802.15.4 devices

• 8MHz Texas Instruments MSP430 microcontroller (10k RAM, 48k Flash)

• Integrated ADC, DAC, Supply Voltage Supervisor, and DMA Controller

• Integrated onboard antenna with 50m range indoors / 125m range outdoors

• Integrated Humidity, Temperature, and Light sensors

• Ultra low current consumption

• Fast wakeup from sleep (<6µs)

• Hardware link-layer encryption and authentication

• Programming and data collection via USB

• 16-pin expansion support and optional SMA antenna connector

• TinyOS support : mesh networking and communication implementation

Summary of content (28 pages)

PAGE 1
Telos Rev B (Low Power Wireless Sensor Module) Telos Ultra low power IEEE 802.15.4 compliant wireless sensor module Revision B : Humidity, Light, and Temperature sensors with USB Product Description Telos is an ultra low power wireless module for use in sensor networks, monitoring applications, and rapid application prototyping. Telos leverages industry standards like USB and IEEE 802.15.4 to interoperate seamlessly with other devices.
PAGE 2
Telos Rev B (Low Power Wireless Sensor Module) Table of Contents Module Description .......................................................................................................................3 Power ....................................................................................................................................4 Typical Operating Conditions ................................................................................................4 Mechanical Characteristics ...........
PAGE 3
Telos Rev B (Low Power Wireless Sensor Module) Module Description The Telos module is a low power “mote” with integrated sensors, radio, antenna, microcontroller, and programming capabilities.
PAGE 4
Telos Rev B (Low Power Wireless Sensor Module) Power Telos may be powered by two AA batteries. The module was designed to fit the two AA battery form factor. AA cells may be used in the operating range of 2.1 to 3.6V DC, however the voltage must be at least 2.7V when programming the microcontroller flash or external flash. If the Telos module is plugged into the USB port for programming or communication, it will receive power from the host computer. The mote operating voltage when attached to USB is 3V.
PAGE 5
Telos Rev B (Low Power Wireless Sensor Module) Mechanical Characteristics O n -b o a rd a n t e n n a ; d o n o t c o v e r w it h c o n d u c t in g m a t e ria ls 3 6 1.267 1 4 5 2 .513 2.580 3.163 .256 Tag 1 2 3 4 5 6 X Y Size Notes 0.183 0.099 Ø 0.090 Mounting hole, do not use metal fixture 2.454 0.099 Ø 0.090 Mounting hole 2.454 1.151 Ø 0.090 Mounting hole 0.755 0.162 Ø 0.066 Pin 1 of 10-pin 0.1in rect IDC connector 1.099 0.163 Ø 0.066 Pin 1 of 6-pin 0.1in rect IDC connector 2.139 0.909 Ø 0.
PAGE 6
Telos Rev B (Low Power Wireless Sensor Module) Block Diagram PCB Antenna CC2420 Radio 2.4 GHz IEEE 802.15.4 compliant SMA Coax SPI 6 4 Power PAR Sensor ADC[4] TSR Sensor ADC[5] JTAG 8-pin 2mm IDC header JTAG SPI[0] I/O P1[0,3,4] P4[1,5,6] TI MSP430 Microcontroller UART[0] 2 I2C[0] 2 ADC[0-3,6-7] 6 GPIO 4 Reset 10-pin + 6-pin IDC header Humidity Temperature Sensor Silicon Serial ID 1-wire I/O User UART[1] Reset P1.1/P2.
PAGE 7
Telos Rev B (Low Power Wireless Sensor Module) Schematic 5 4 3 1 2 R1 S E N S OR S RESET LED2 P5.5/SMCLK 49 45 P5.0/STE1 44 P6.7/A7/DAC1/SVSIN Vref+ 8 XIN 9 XOUT/TCLK 10 43 P4.6/TB6 42 P4.5/TB5 41 P4.4/TB4 40 39 F L A SH _ H O L D R A D I O _ R E S ET R A D I O _ V R EF_ EN F L A SH _ C S Pr e v Fl a s h Pwr RADIO_CS 37 R A DIO_SFD P4.0/TB0 36 P3.7/URXD1 35 UART1RX P3.6/UTXD1 34 UART1TX P3.
PAGE 8
Telos Rev B (Low Power Wireless Sensor Module) 5 4 3 2 U S B P OW E R F I L T E R 1 MOTE POWER USB INTERFA CE 1 1 27 U _ VCC 8 USBDM 7 USBDP 1 .
PAGE 9
Telos Rev B (Low Power Wireless Sensor Module) Microprocessor Description The low power operation of the Telos module is due to the ultra low power Texas Instruments MSP430 F1611 microcontroller featuring 10kB of RAM, 48kB of flash, and 128B of information storage. This 16-bit RISC processor features extremely low active and sleep current consumption that permits Telos to run for years on a single pair of AA batteries.
PAGE 10
Telos Rev B (Low Power Wireless Sensor Module) Figure 5 : Device Manager showing Telos installed as COM6 The motelist command line utility lists all of the Telos motes currently connected to a computer. This utility optionally lists previously connected motes that the system has cached. Invoke motelist with the -h option for more information.
PAGE 11
Telos Rev B (Low Power Wireless Sensor Module) To communicate with Telos, the MSP430 Bootstrap Loader requires a set of options to provide the proper signals to the microcontroller to initiate programming. For convenience, the options have been folded into a single Telos (Revision B) flag: --telosb To program a Telos module on COM3 (or /dev/ttyUSB2 in Linux) with an application image named app.ihex, invoke the MSP430 Bootstrap loader with the following options. > msp430-bsl --telosb -c 2 -r -e -I -p app.
PAGE 12
Telos Rev B (Low Power Wireless Sensor Module) Block Diagram 32kHz Oscillator Flash ACLK System Clock SMCLK RAM 12-bit ADC 8 Channels <10µs Conv 12-bit DAC I/O Port 1/2 I/O Port 3/4 I/O Port 5/6 16 I/Os 16 I/Os 8 I/Os 2 Channels Interrupts MCLK 16-bit bus CPU 16 bit 16 reg multiply DMA Controller 3 Channels Watchdog Timer 15/16 bit Timer A 3 CC reg Timer B 7 CC reg Comparator A USART0 UART SPI I 2C USART1 UART SPI CC2420 Radio Interrupts & SPI PC UART via USB Figure 6 : Block diagram of
PAGE 13
Telos Rev B (Low Power Wireless Sensor Module) Radio Description Telos features the Chipcon CC2420 radio for wireless communications. The CC2420 is an IEEE 802.15.4 compliant radio providing the PHY and some MAC functions. With sensitivity exceeding the IEEE 802.15.4 specification and low power operation, the CC2420 provides reliable wireless communication. The CC2420 is highly configurable for many applications with the default radio settings providing IEEE 802.15.4 compliance.
PAGE 14
Telos Rev B (Low Power Wireless Sensor Module) Typical Operating Conditions Supply voltage during radio operation (Vreg on) Operating free air temperature RF frequency range Transmit bit rate Nominal output power Programmable output power range Receiver sensitivity Current consumption: Radio transmitting at 0 dBm Current consumption: Radio receiving Current consumption: Radio on, Oscillator on Current consumption: Idle mode, Oscillator off Current consumption: Power Down mode, Vreg off Voltage regulator c
PAGE 15
Telos Rev B (Low Power Wireless Sensor Module) Antenna Telos has two antenna options—and internal antenna built into the module and an external SMA connector for connecting to external antennas. By default, Telos is shipped with the internal antenna enabled. If an application requires an external antenna or a different directional pattern than the internal antenna, an SMA connector may be installed and an antenna may be connected directly to Telos’ SMA female connector.
PAGE 16
Telos Rev B (Low Power Wireless Sensor Module) Internal Antenna without Battery Pack 2004/11/25 Thr 14:44:06 CH2 S11 SMITH(R+jX) FS 0 1.000 MKR 3: 2.483 958 333GHz 65.166 4.083 −5 1 −10 Cor 4 −15 Log(|S11|) (dB) 2 3 2 3 −20 −25 −30 −35 1 −40 1:2.400 000GHz 2:2.450 000GHz 3:2.483 958GHz 40.014 39.757 65.041 START 2.3GHz -40.598 -4.623 4.227 [ 10.00 dBm] 1.633pF 14.050pF 270.843pH STOP 2.55GHz 1: 2: 3: −45 4: 2.400 GHz 2.450 GHz 2.485 GHz 2.500 GHz −50 2.3 2.325 −7.40 dB −16.
PAGE 17
Telos Rev B (Low Power Wireless Sensor Module) Radiation Pattern Figure 13 : Radiated pattern of the Inverted-F antenna with horizontal mounting (from Chipcon AS) Figure 14 : Radiated pattern of the Inverted-F antenna with vertical mounting (from Chipcon AS) Moteiv Corporation Telos (Rev B) : PRELIMINARY Datasheet (12/5/2004) Page 17 of 28
PAGE 18
Telos Rev B (Low Power Wireless Sensor Module) SMA Connector The SMA connector is a surface mount female coax connector for attaching an external antenna. The default Telos configuration does not include the SMA connector. The connector may be purchased separately from Digikey (http://www.digikey.com). The manufacturer’s part number is 901-144 from Amphenol RF (Digikey part number ARF1205-ND). The performance of the SMA connector is independent of the presence of the battery pack.
PAGE 19
Telos Rev B (Low Power Wireless Sensor Module) External Flash Telos Revision B uses the ST M25P80 40MHz serial code flash for external data and code storage. The flash holds 1024kB of data and is decomposed into 16 segments, each 64kB in size. The flash shares SPI communication lines with the CC2420 transceiver.
PAGE 20
Telos Rev B (Low Power Wireless Sensor Module) Flash Hardware Write Protection The flash includes hardware write protection functionality. The write protection exists on a sector basis as shown in Figure 18. The hardware write protection pin (Pin 3 of the M25P80 shown in Figure 16) only disables write protection when the module is powered by the USB port. When connected to USB, the status register must be updated by removing the write protect and block protect bits in Figure 17.
PAGE 21
Telos Rev B (Low Power Wireless Sensor Module) Sensors Humidity/Temperature Sensor The optional humidity/temperature sensor is manufactured by Sensirion AG. The SHT11 and SHT15 models may be directly mounted on the Telos module in the U3 component position. The SHT11/SHT15 sensors are calibrated and produce a digital output. The calibration coefficients are stored in the sensor’s onboard EEPROM.
PAGE 22
Telos Rev B (Low Power Wireless Sensor Module) Light Sensors A variety of light sensors may be used with Telos. Telos (rev A) has connections for two photodiodes. Moteiv currently uses photodiodes from Hamamatsu Corporation (http://www.hamamatsu.
PAGE 23
Telos Rev B (Low Power Wireless Sensor Module) Expansion Connector Telos has two expansion connectors and a pair of onboard jumpers that may configured so that additional devices (analog sensors, LCD displays, and digital peripherals) may be controlled by the Telos module. On the far side of the board from the USB connector is a 10-pin IDC header at position U2 and a 6-pin IDC header at U28. The 10-pin connector has the same connections as Telos Revision A and is the primary connector.
PAGE 24
Telos Rev B (Low Power Wireless Sensor Module) If expansion pin 10 (ADC3) is used for digital I/O instead of analog inputs, R14 must be populated with a 0 ohm resistor to enable the pin for digital I/O (GIO0) on the microcontroller. R16 must be populated with a 0 ohm resistor to enable GIO1. R14 and R16 are located on the top side of Telos between the USB controller and the radio.
PAGE 25
Telos Rev B (Low Power Wireless Sensor Module) Internal Temperature and Voltage Monitoring The MSP430 microcontroller has internal temperature and voltage sensors that may be used through the microcontroller’s ADC interface. The voltage port (input 11) on the 12-bit ADC monitors the output from a voltage divider. DVcc R AD C11 R Voltage monitoring for Telos motes.
PAGE 26
Telos Rev B (Low Power Wireless Sensor Module) General Information Document History Revision Date Notes 1.0 2004/12/05 Initial Release Product Status Definitions Data Sheet Identification Product Status Definition Advance Information Planned or under development Preliminary Engineering samples or first production No Identification Noted Full production Obsolete Not in production This data sheet contains the design specifications for product development.
PAGE 27
Telos Rev B (Low Power Wireless Sensor Module) Disclaimer Moteiv Corporation believes the information contained herein is correct and accurate at the time of this printing. However, Moteiv Corporation reserves the right to make changes to this product without notice. Moteiv Corporation does not assume any responsibility for the use of the described product; neither does it convey any license under its patent rights, or the rights of others.
PAGE 28
Telos Rev B (Low Power Wireless Sensor Module) Address Information Web site: E-mail: Technical Support E-mail: Phone Number: Fax Number: http://www.moteiv.com info@moteiv.com support@moteiv.com +1.510.965.1312 +1.510.295.