The Sensor Network Museumtm - Tmote Sky

Tmote Sky

Manufacturer documentation: Moteiv Tmote Sky

Ultra low power IEEE 802.15.4 compliant wireless sensor module based on a TI MSP430 and Chipcon CC2420 radio. Also named Telos B.


  • TI MSP430F1611 microcontroller at up to 8 MHz
  • 10k SRAM, 48k Flash + 1024k serial storage
  • 250kbps 2.4 GHz Chipcon CC2420 IEEE 802.15.4 Wireless Transceiver
  • On-board humidity, temperature and light sensors
  • Ultra-low current consumption
  • Fast wakeup from sleep (<6usec)
  • Programming and interface via USB
  • Serial ID chip
  • 16-pin expansion port
  • 32x80 mm

Power Consumption - Typical Operation

 Tmote Sky a
Battery Supply2xAA cells or USB
Minimum Vin2.1 V ( min. 2.7V during flash programming)
Battery Capacity2900 mAh
Regulated Supplyinternal linear regulator for CC2420 radio at 1.8V
uC sleep with timer on0.0153 mW b
uC active, radio off5.4 mW
uC active, radio idle listening65.4 mW
uC active, radio TX/RX58.5 mW
Max. Power (uC active, radio TX/RX + flash write)69 mW
a typical datasheet values as reported for the whole system (computed at 3.0V)
b wakeup from internal timer only

Tmote Sky Knowledge Base

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!!! This document is stored in the ETH Web archive and is no longer maintained !!!