Datasheet

ManualsBrandsmoteiv ManualsAutomotiveTelos

Telos

Rev A (Low Power Wireless Sensor Module)

Moteiv Corporation Telos (Rev A) : Datasheet (8/14/2004) Page 1 of 26

Telos

Ultra low power IEEE 802.15.4 compliant wireless sensor module

Revision A : 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. 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 (2k RAM, 60k ROM)

• 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

• 12-pin expansion support and optional SMA antenna connector

• TinyOS support : mesh networking and communication implementation

Summary of content (26 pages)

PAGE 1
Telos Rev A (Low Power Wireless Sensor Module) Telos Ultra low power IEEE 802.15.4 compliant wireless sensor module Revision A : 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 A (Low Power Wireless Sensor Module) Table of Contents Module Description .......................................................................................................................3 Power ....................................................................................................................................4 Typical Operating Conditions ................................................................................................4 Block Diagram.........................
PAGE 3
Telos Rev A (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 A (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’s flash. Telos may also be used with a 2/3A sized battery. The 2/3A battery holder may be soldered to the positive terminal directly under the USB connector and the negative terminal next to the radio.
PAGE 5
Telos Rev A (Low Power Wireless Sensor Module) Block Diagram PCB Antenna SMA Coax CC2420 Radio 2.4 GHz IEEE 802.15.4 compliant SPI I/O 6 4 Power PAR Sensor ADC[4] TSR Sensor ADC[5] SPI[0] P1[0,3,4] P4[1,5,6] UART[0] 2 I2C[0] 2 ADC[0-3] 4 GPIO 2 TI MSP430 Microcontroller UART[1] Reset P1.1/P2.2 TCK I2C[0] 2 2 RX/TX RTS/DTR USB 2.0 UART/RS232 Functionality 2 SPI[0] 4 Power 2-pin IDC header I/O 10-pin IDC header Humidity Temperature Sensor Atmel Flash 512kB (2.
PAGE 6
Telos Rev A (Low Power Wireless Sensor Module) Schematic 5 4 3 2 1 R1 RESET 100k TMS TDI TDO 55 54 LED2 TCK 56 LED3 RESET 57 SVSOUT ADC0 58 50 ADC1 59 49 ADC2 60 SENSORS HUM_PWR P5.5/SMCLK XT2OUT P5.6/ACLK XT2IN TDO/TDI TDI TMS TCK RST/NMI P6.0/A0 P6.1/A1 P6.2/A2 P4.7/TBCLK 43 Vref+ P4.5/TB6 42 RADIO_RESET XIN MCU P4.5/TB5 41 RADIO_VREF_EN XOUT/TCLK P4.
PAGE 7
Telos Rev A (Low Power Wireless Sensor Module) 5 4 3 2 1 D22 USBDM 7 USBDP 5 4 RSTOUT# RESET# U_VCC USB A 1.5k 27 XTIN 28 32 1 2 31 XTOUT EECS EESK EEDATA TEST C X3 3 R32 1m 2 EECS EESK EEDATA GND 1 6M resonator FT232BM DVCC 13 26 U_VCC 2 Vin D TXDEN TXLED# RXLED# 16 12 11 PWRCTL PWREN# SLEEP# 14 15 10 U_VCC C23 0.1u TXD RXD RTS U_VCC3.3 2 1 100 Green Clear - 404-1021-1-ND 2 1 CS VCC 8 EESK 2 SK NC 7 EEDATA R27 3 DIN 4 DOUT 2.
PAGE 8
Telos Rev A (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 microcontroller. 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. The MSP430 has an internal digitally controlled oscillator (DCO) that may operate up to 8MHz.
PAGE 9
Telos Rev A (Low Power Wireless Sensor Module) Figure 4 : 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 10
Telos Rev A (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.
PAGE 11
Telos Rev A (Low Power Wireless Sensor Module) Block Diagram 32kHz Oscillator Flash 12-bit ADC I/O Port 1/2 I/O Port 3/4 I/O Port 5/6 16 I/Os 8 Channels 8 I/Os 16 I/Os <10µs Conv Interrupts ACLK System Clock RAM SMCLK MCLK 16-bit bus CPU 16 bit 16 reg multiply Watchdog Timer 15/16 bit Timer A 3 CC reg Timer B 7 CC reg Comparator A USART0 UART SPI USART1 UART SPI CC2420 Radio Interrupts & SPI PC UART via USB Figure 5 : Block diagram of the TI MSP430 microcontroller and its connection to ot
PAGE 12
Telos Rev A (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 13
Telos Rev A (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 14
Telos Rev A (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 15
Telos Rev A (Low Power Wireless Sensor Module) Internal Antenna without Battery Pack 2004/05/27 Thr CH1 S11 SMITH(R+jX) FS 1.000 MKR 1: 56.303 5:35:28 2004/05/27 Thr CH1 S11 LOG MAG REF 2.5GHz -7.865 Cor 5:35:47 0.000 dB 5.000 dB/ MKR 1: 2.5GHz -20.298 dB Cor 3 3 2 2 1 1 1:2.500 000GHz 2:2.450 000GHz 3:2.400 000GHz 56.303 50.490 22.551 CENTER 2.45GHz -7.865 20.549 16.105 8.093pF 1.334nH 1.068nH [ 10.00 dBm] 1:2.500 000GHz 2:2.450 000GHz 3:2.400 000GHz SPAN 300MHz -20.298 dB -13.
PAGE 16
Telos Rev A (Low Power Wireless Sensor Module) Radiation Pattern Figure 12 : Radiated pattern of the Inverted-F antenna with horizontal mounting (from Chipcon AS) Figure 13 : Radiated pattern of the Inverted-F antenna with vertical mounting (from Chipcon AS) Moteiv Corporation Telos (Rev A) : Datasheet (8/14/2004) Page 16 of 26
PAGE 17
Telos Rev A (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 surface mount SMA connector. The connector may be purchased separately from Allied Electronics (http://www.alliedelec.com). The manufacturer’s part number is 142-0711-201 from Johnson Components. The performance of the SMA connector is independent of the presence of the battery pack.
PAGE 18
Telos Rev A (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 19
Telos Rev A (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.com) If your mote is populated with light photodiodes, the default diodes are the S1087 for sensing photosynthetically active radiation and the S1087-01 for sensing the entire visible spectrum including infrared.
PAGE 20
Telos Rev A (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 opposite side of the board from the USB connector is a 10-pin IDC header at position U2. This is the primary connector and provides digital and analog input and output lines.
PAGE 21
Telos Rev A (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 bottom side of Telos directly next to the microcontroller.
PAGE 22
Telos Rev A (Low Power Wireless Sensor Module) Converting the ADC units to a voltage reading can be done with the following formulas: For motes with serial numbers prior to M4BR6CR6: ADCCounts R + R + 470 × Vref × 4096 R R ≈ 1175Ω DVcc = For motes with serial numbers including and subsequent to M4BR6CR6: DVcc = ADCCounts 2R × Vref × 4096 R The temperature input is internal ADC port 10. It consists of an uncalibrated diode.
PAGE 23
Telos Rev A (Low Power Wireless Sensor Module) General Information Document History Revision Date Notes 1.0 1.01 2004/05/31 2004/06/16 1.02 2004/07/14 1.03 2004/08/14 Initial Release Included information about calculating voltages from the internal ADC voltage port and temperature from the internal temperature port on the MSP430 microcontroller. Fix: Schematic modifications from product assembly rework. Fix: S1337-BQ may be substituted for the S1087-01. Error: ADC3 is not connected to U2.
PAGE 24
Telos Rev A (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 25
Telos Rev A (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.
PAGE 26
Telos Rev A (Low Power Wireless Sensor Module) © 2004 Moteiv Corporation Moteiv Corporation Telos (Rev A) : Datasheet (8/14/2004) Page 26 of 26