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Connected Wearable Electrocardiogram (ECG) Demo

SAML22 32-bit ARM® Cortex®-M0+ MCU, BTLC1000 BLE Module, ECC508A CryptoAuthentication Chip and NeuroSky® CardioChip ECG biosensor

mpg photo medical ecg board angle transparent


Electrocardiogram (ECG) heart data is a more complex measurement than a simple heart rate measurement expressed in beats per minute (BPM). ECG measurement and analysis are becoming popular functions for fitness applications, but they are also essential parts of many medical device designs. As medical remote patient monitoring becomes more important, the need for wearable ECG capability has become critical. Microchip’s Connected, Wearable ECG Demonstration Board can be used in the design of advanced fitness tracking devices and can also be designed into medical wearable remote patient monitoring and diagnostic systems.

This demo features the SAML22—a high-performance, 32-bit ARM Cortex-M0+ microcontroller with ultra low-power technology, the BTLC1000 Bluetooth® Low Energy (BLE) 4.1 Module, the ECC508A CryptoAuthentication chip and the NeuroSky® CardioChip ECG Biosensor.

The ECG demo measures complex heart rate and computes other heart related data. Patient movement is also tracked via an on-board accelerometer. The BTLC1000 BLE module on this board allows the demo to communicate with tablets, smartphones or PCs for IoT capability.

Design Files Download

Connected Wearable ECG Demo ‘C’ Source Code and User Guide with Schematics are available for this demo


This demo is not for sale. Please download the design files for your evaluation and prototype development.

Demonstration Highlights

  • Ideal for portable/wearable medical/fitness designs
  • Measures heart rate and computes heart rate variability, heart age and stress using ECG data
  • Easy development of more advanced heart-health index functions
  • Demo can also be shown using standard ECG leads
  • BLE module is used for smartphone/tablet IoT capability
  • Low overall BOM cost due to high level of integration
  • Powered from a single AAA battery

Related Product Pages

Contact your local sales representative to see a working demonstration of Microchip's Connected Wearable ECG Demonstration Board.

SAML22 MCU Features

  • ARM® Cortex®-M0+ based MCU running up to 32MHz
  • Up to 256KB embedded Flash and 32KB SRAM
  • Low power consumption at <39µA/MHz
  • Segment LCD (SLCD) Controller with up to 320 segments
  • DMA, Sleepwalking and Event system
  • Up to 6 flexible serial communication modules (SERCOM)
  • Up to 5 timers/counters
  • Full-Speed USB Device
  • 12-bit ADC (SAM L22N: 20 channels; SAM L22J: 16 channels; SAM L22G: 10 channels)
  • 2 analog comparators and programmable logic block
  • PTC Hardware touch support
  • Tamper detection
  • QFP, QFN and WLCSP package options (SAM L22N: 100 pins; SAM L22J: 64 pins; SAM L22: 48 pins)
Buy the SAML22 MCU Now

BTLC1000 BLE Module Features

  • Ultra low-power Bluetooth Low Energy (BLE 4.1) SoC with:
    • Integrated ARM Cortex-M0 MCU
    • Transceiver and modem
    • MAC, PA, TR switch, and power management unit
  • Fully qualified Bluetooth 4.1 module offers rapid time to market for connected designs
  • On-board Bluetooth Low Energy 4.1 stack
  • Simple ASCII command interface over UART
  • Certifications: FCC, IC, CE, QDID
  • Small form factor and low-power modes
  • GAP, GATT, SM, L2CAP and Bluetooth SIG profiles
Buy the BTLC1000 BLE Module Now

ECC508A CryptoAuthentication Chip Features

  • Crypto element device with secure hardware-based key storage
  • Performs high-speed public key algorithms: ECDSA and ECDH
  • NIST standard P256 elliptic curve support
  • SHA-256 hash algorithm with HMAC option
  • Host and client operations
  • Two high-endurance monotonic counters
  • Guaranteed unique 72-bit serial number
  • Internal High-quality FIPS RNG
  • Storage for up to 16 keys
  • Multiple options for consumption logging and one-time write information
  • Intrusion latch for external tamper switch or power-on chip enablement
Buy the ECC508A CryptoAuthentication Chip Now

NeuroSky CardioChip ECG Biosensor

  • Single-chip solution for accurate bio-signal detection and processing
  • Ultra small footprint 3 mm x 3 mm package and extremely low power consumption
  • Mixed-signal SoC with integrated Analog Front End (AFE), DSP functions and choice of serial interface UART/I2C/SPI
  • Accurate ECG raw signal as well as real-time heart-rate output
  • Supports signal acquisition using dry contact electrodes
  • High-performance AFE for detection and processing of bio-signals ranging from μV to mV levels
  • Advanced Low-Noise Amplifier (LNA) and anti-alias filtering
  • High-resolution (16-bit) ADC with 512 Bytes/sec sample rate
  • Accurate on-chip heartbeat detection (24–200 bpm) and real time heart rate (± 1 bpm) computation
  • For pricing and availability contact Neurosky at sales@neurosky.com or for more information go to http://neurosky.com/biosensors/ecg-sensor/

This reference demo helps designers develop a portable/ wearable, connected ECG board design with Bluetooth Low Energy capability for medical and fitness IoT applications.*

System Diagram

Medical ECG Demo Board

Development Made Easy

Start with the free download of the user guide, schematics and 'C' source code that can easily be modified to your specific application needs. To download see the Resources section above.

*Microchip medical reference designs and demos are intended for evaluation and development purposes only. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use.

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