Deep Dive Report
TomTom Runner Cardio 8RA0
Bluetooth 4.0
Report #17000-140613-PKc
Product Description:
The TomTom Runner Cardio 8RA0 is an activity tracker
worn like a wrist watch and featuring a built-in heart rate
sensor that allows it to track and record the user’s heart
rate. It’s also waterproof to 165 ft./50 m (5 ATM), which
allows it to be worn while swimming. Time and activity
information are displayed on a 1.3-in. monochrome
display with 168 x 144 resolution. Touching the right side
of the display turns the backlight on or off. Located
directly below the display is a four-way keypad that
allows the user to select various menus or return to the
default clock function. In the center of the keypad is the
GPS antenna. Connectivity includes Bluetooth 4.0 and
GPS/GLONASS with QuickGPSfix. The TomTom Runner
Cardio 8RA0 runs a proprietary operating system on an
Atmel 32-bit ARM-based microcontroller. Other features
include two 3-axis MEMS accelerometers, a 3-axis
compass, and vibrational and sound alerts. Supported
languages are English, Spanish, German, French, and
Italian. The TomTom Runner Cardio 8RA0 is powered by
a 3.7 V, 190 mAh Li-ion polymer battery that supplies up
to 8 hours of use time (GPS + HR). It also comes with a
custom USB docking connector for charging.
DISCLAIMER: All company names, product names, and service names mentioned are used for identification purposes only and may be registered trademarks, trademarks, or service marks of their respective owners. All
analyses are done without participation, authorization, or endorsement of the manufacturer. Any cost analyses presented in this material are estimates prepared by TechInsights from generally available data. While
TechInsights believes that these estimates reflect the probable costs, the actual producer did not supply the data, and therefore the actual costs may be different from these estimates. Furthermore, TechInsights extends
no warranties with respect to any information in this document, and shall bear no liability whatsoever for the use of the information.
Copyright © 2014, TechInsights. All rights reserved. Do not reproduce, distribute, disseminate, photocopy, fax, transmit, download to a shared database, or otherwise copy, transfer, sell, publish, or send this material, or
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Block Diagram
Bluetooh Antenna
GPS Antenna
2 - Texas Instruments
#CC2541
Single-Chip 2.4 GHz
Bluetooth SoC
11 - Infineon
#BGA725L6
GPS / GLNSS LNA
5 - STMicroelectronics
#LSM303DLHC
3-Axis MEMS Accelerometer
& 3-Axis Compass
10 - Cambridge Silicon Radio (CSR)
#SiRFstarV 5e
Quad-GNSS Receiver
4 - Micron
#N25Q032A13ESC40F
Serial Flash Memory - 4 MB
8 - STMicroelectronics
#STNS01 ?
Battery Charger w/ LDO
1 - Atmel
#ATSAM4S8C
32-Bit ARM-Based Microcontroller
Vibrator
7 - Atmel
#ATtiny20
8-bit AVR Microcontroller
w/ Flash
Buzzer
6 - Freescale
#MMA8452Q
3-Axis Digital MEMS Accelerometer
3 - Texas Instruments
#MSP430F5510
16-Bit Mixed-Signal Microcontroller
Heart
Rate
Sensor
USB Adapter
Connector
? = Unconfirmed
Copyright © 2014, TechInsights
Estimated block diagram based on observation of this specific product implementation, manufacturer’s
data sheets where available, and best engineering judgment. Certain details of the interface circuitry
are not reflected in this block diagram. Partitioning and connectivity are speculative.
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TomTom Runner Cardio 8RA0 #17000-140613-PKc - Page 2
Component Arrangement
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TomTom Runner Cardio 8RA0 #17000-140613-PKc - Page 3
Main Board (Side 1)
Bluetooth Antenna
Battery Connectors
RF Board
Sensor Board
Grid = 1 cm
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TomTom Runner Cardio 8RA0 #17000-140613-PKc - Page 4
Main Board (Side 1 IC Identification)
14 - Texas Instruments
#TPS61222
DC-DC Converter
2 - Texas Instruments
#CC2541
Single-Chip 2.4 GHz Bluetooth SoC
6 - Freescale
#MMA8452Q
3-Axis Digital MEMS Accelerometer (2-Die Pkg.)
9 - Texas Instruments
#TPS62243
300 mA Step-Down Converter
3 - Texas Instruments
#MSP430F5510
16-Bit Mixed-Signal Microcontroller
8 - STMicroelectronics
#STNS01 ?
Battery Charger w/ LDO
4 - Micron
#N25Q032A13ESC40F
Serial Flash Memory - 4 MB
5 - STMicroelectronics
#LSM303DLHC
3-Axis MEMS Accelerometer & 3-Axis Compass
(5-Die Pkg.)
7 - Atmel
#ATtiny20
8-bit AVR Microcontroller w/ Flash
1 - Atmel
#ATSAM4S8C
32-Bit ARM-Based Microcontroller
? = Unconfirmed
Grid = 1 cm
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TomTom Runner Cardio 8RA0 #17000-140613-PKc - Page 5
Main Board (Side 2)
Backlight Diode
Display
Buzzer
Backlight On
Grid = 1 cm
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TomTom Runner Cardio 8RA0 #17000-140613-PKc - Page 6
RF Board
10 - Cambridge Silicon Radio (CSR)
#SiRFstarV 5e
Quad-GNSS Receiver
Activities
Menu Button
USB Adapter Port
Settings Button
GPS Antenna
11 - Infineon
#BGA725L6
GPS / GLNSS LNA
Selection Button
Main Board
Grid = 1 cm
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Status Screen
Button1
Grid = 1 cm
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TomTom Runner Cardio 8RA0 #17000-140613-PKc - Page 7
Sensor Board
15 - Texas Instruments
#ADS1115
16-Bit ADC
16 - Vishay
#DG9411
SPDT Analog Switch
LED Diodes
Light Sensor
12 - Microchip
#MCP6293
Rail-to-Rail Op Amp
Connection
Flex
Grid = 1 cm
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Grid = 1 cm
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13 - Microchip
#MCP4921 ?
12-Bit DAC
? = Unconfirmed
TomTom Runner Cardio 8RA0 #17000-140613-PKc - Page 8
Connection Flex
Main Board
Vibrator
Sensor Board
Grid = 1 cm
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Grid = 1 cm
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TomTom Runner Cardio 8RA0 #17000-140613-PKc - Page 9