Chronos: Wireless development tool in a watch


Description & Features

Technical Documents

Support & Training

Order Now

Key Document


The eZ430-CHRONOS-433 is no longer available. For evaluation of the CC430 microcontroller, please consider the eZ430-CHRONOS-868 or eZ430-CHRONOS-915 variants shown below.

The eZ430-Chronos is a highly integrated, wearable wireless development system based for the CC430 in a sports watch. 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. This tool features a 96 segment LCD display and provides an integrated pressure sensor and 3-axis accelerometer for motion sensitive control. The integrated wireless feature allows the Chronos to act as a central hub for nearby wireless sensors such as pedometers and heart rate monitors. The eZ430-Chronos offers temperature and battery voltage measurement and is complete with a USB-based CC1111 wireless interface to a PC.

The eZ430-Chronos watch may be disassembled to be reprogrammed with a custom application and includes an eZ430 USB programming interface.

Check out the BM Innovations Chest Strap to use the Chronos as a heart rate monitor.

For more information on other TI wireless solutions, please see the CC430 Wireless Microcontrollers home page.


The ECCN (Export Control Classification Number) classification for this tool will be the same as the included microcontrollers. To find ECCN information for a microcontroller, see the datasheet for that device.

Any use made of Texas Instruments (TI) classifications, whether it be ECCNs or HTS, is without recourse to TI and at the user’s risk. HTS and export classifications are subject to change. Your company, as the exporter of record, is responsible for determining the correct classification of any item at the time of export. Any HTS or export classification by TI is for TI’s internal use only and shall not be construed as a representation or warranty regarding the proper export classification nor relied upon to make licensing determinations.

eZ430-Chronos Options
Part Number eZ430-Chronos-433 eZ430-Chronos-868 eZ430-Chronos-915
RF Operating Frequency 433 MHz 868 MHz 915 MHz
Acceptable Operating Region Acceptable worldwide Europe and India N. & S. America
Ordering Options No longer available Buy Now Buy Now


  • Fully functional sports watch based on the CC430F6137, MSP430 with integrated <1GHz wireless transceiver
  • Watch reprogrammable for custom wireless applications
  • Highly integrated watch includes on-board 3-axis accelerometer, pressure sensor, temperature sensor, battery voltage sensor
  • 96-Segment LCD display driven directly by CC430
  • Can be paired wirelessly with heart rate monitors, pedometers or other devices based RF transceivers like the CC1101 or SoCs such as the CC430 or CC111x
  • Includes an eZ430 USB emulator that connects the Chronos to a PC for real-time, in-system programming and debugging
  • Includes IAR Kickstart and Code Composer Studio integrated development environments which includes an assembler, linker, simulator, source-level debugger, and code limited C-compiler
  • Supports development with some 2xx Spy Bi-Wire devices (refer to Table 1-1 in MSP430 Hardware Tools User's Guide for complete compatibility list)

Community Projects & Support

For the latest information on new projects from TI and the community please check the Chronos Wiki.

What's Included

[ What's Included Text ]

  • eZ430-Chronos wireless watch
  • eZ430 USB programming and debugging interface
  • 2 spare screws
  • Mini Phillips screwdriver
  • CC1111 USB RF access point
Order Now
Part Number Status

Chronos: Wireless development tool in a watch


TI's Standard Terms and Conditions for Evaluation Modules apply.

Technical Documents
Application notes (1)
Title Abstract Type Size (KB) Date
PDF 2383 21 Jun 2018
User guides (2)
Title Abstract Type Size (KB) Date
PDF 9236 29 Jul 2015
PDF 4628 14 Jan 2013
Selection guides (1)
Title Abstract Type Size (KB) Date
PDF 5481 23 Mar 2016
White papers (1)
Title Abstract Type Size (KB) Date
PDF 106 13 Mar 2014
More literature (4)
Title Abstract Type Size (KB) Date
PDF 38 02 Jan 2019
PDF 38 02 Jan 2019
PDF 38 02 Jan 2019
PDF 343 06 Jan 2012

Software (3)

Development Tools (5)

Name Part Number Tool Type
SmartRF Studio  SMARTRFTM-STUDIO  Calculation Tools 
Code Composer Studio (CCS) Integrated Development Environment (IDE)  CCSTUDIO  SW Development Tools, IDEs, Compilers 
Code Composer Studio™ Integrated Development Environment for MSP Microcontrollers  CCSTUDIO-MSP  SW Development Tools, IDEs, Compilers 
GCC - Open Source Compiler for MSP Microcontrollers  MSP430-GCC-OPENSOURCE  SW Development Tools, IDEs, Compilers 
IAR Embedded Workbench  IAR-KICKSTART  SW Development Tools, IDEs, Compilers 

Design Kits & Evaluation Modules  ( 2 )

Name Part Number Tool Type
CC1111 USB Evaluation Module Kit 868/915 MHz  CC1111EMK868-915  Daughter Cards 
EM430F6137RF900 - 64-pin Target Development Board for CC430 MCUs  EM430F6137RF900  Evaluation Modules & Boards 

TI Devices (1)

Part Number Name Product Family
CC430F6137  16-Bit Ultra-Low-Power MCU, 32KB Flash, 4KB RAM, CC1101 Radio, AES-128, 12Bit ADC, USCI, LCD driver  Microcontrollers (MCU) 

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.