Chronos Personal Area Network and Sensor Node Development System Reference Design


Design files


This reference design features a highly integrated, wearable wireless development system provided in a sports watch form-factor. It may be used as a reference platform for watch systems, a personal display for personal area networks, or as a wireless sensor node for remote data collection. Based on the CC430F6137 <1 GHz RF SoC, the eZ430-Chronos is a complete CC430-based development system contained in a watch and features a 96 segment LCD display, an integrated pressure sensor and 3-axis accelerometer for motion sensitive control.

  • Complete sports watch based on the CC430F6137, an MSP430™ microcontroller with integrated sub-1-GHz wireless transceiver
  • Watch can be reprogrammed for custom wireless applications
  • Highly integrated watch includes on-board three-axis accelerometer, pressure sensor, temperature sensor, and battery voltage sensor
  • 96-segment LCD display driven directly by the CC430 microcontroller
  • Can be paired wirelessly with heart-rate monitors, pedometers, or other devices based on RF transceivers such as the CC430 or CC11xx devices
  • Includes an eZ430-RF USB emulator that connects the eZ430-Chronos to a PC for real-time in-system programming and debugging.
  • This reference design is tested and includes firmware, hardware design files & documentation.
  • Hardware based on this design is also orderable from the TI eStore (eZ430-CHRONOS)

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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

SLAR074.PDF (767 K)

Detailed schematic diagram for design layout and components

SLAR075.PDF (74 K)

Complete listing of design components, reference designators, and manufacturers/part numbers


Includes TI products in the design and potential alternatives.

Linear & low-dropout (LDO) regulators

TPS769100-mA, 10-V, low-IQ, low-dropout voltage regulator with enable

Data sheet: PDF
MSP430 microcontrollers

CC430F613720 MHz MCU with 32KB Flash, 4KB SRAM, Sub-1 GHz radio, AES-128, 12-bit ADC, I2C/SPI/UART, 96 seg

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
User guide eZ430-Chronos Development Tool User's Guide (Rev. G) PDF | HTML Jul. 29, 2015

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