Description
This heart rate monitor is based on NXP’s KW41Z, an ultra-low-power BLE-enabled MCU that provides all the capabilities for acquiring, processing and sending data obtained from analog sensors. NXP also offers a battery charger IC, RTC and LED controller for a complete heart rate monitor solution.
Block Diagram
![Block-Diagram-HeartRateMonitor-PNG[1].png](/t5/image/serverpage/image-id/95231i9771CDAE8CF22056/image-size/large?v=v2&px=999 "Block-Diagram-HeartRateMonitor-PNG[1].png")
Products
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Category Name 1: |
MCU |
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Product URL 1 |
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Product Description 1 |
The KW41Z is an ultra-low-power, highly-integrated single-chip device that enables Bluetooth® Low Energy connectivity, The KW41 also has a 16-bit ADC for data acquiring and a 6-bit High-Speed Analog Comparator. If needed the KW41Z also has AES-128 Accelerator (AESA), True Random Number Generator (TRNG) for an end-node secure. |
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Category Name 2: |
Battery Charger |
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Product URL 1 |
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Product Description 1 |
The MC34673 is a cost-effective fully-integrated battery charger for Li-Ion or Li-Polymer batteries. It tolerates an input voltage up to 28 V, which eliminates the input over-voltage-protection circuit required in handheld devices. |
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Category Name 3: |
Real-time clock/calendar |
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Product URL 1 |
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Product Description 1 |
The PCF2123 is a CMOS Real-Time Clock (RTC) and calendar optimized for low power applications. Data is transferred serially via a Serial Peripheral Interface (SPI-bus) with a maximum data rate of 6.25 Mbit/s. |
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Category Name 4: |
GPIO Expander |
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Product URL 1 |
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Product Description 1 |
NXP® I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum. The PCAL6408A provides remote I/O expansion for most microcontroller families via the I²C-bus interface. |
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Category Name 5: |
LED Driver |
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Product URL 1 |
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Product Description 1 |
The PCA9633 is one of the first LED controller devices in a new Fast-mode Plus (Fm+) family. Fm+ devices offer higher frequency (up to 1 MHz) and more densely populated bus operation (up to 4000 pF). |
Related Documentation
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Document URL |
Title |
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Level shifting techniques in I2C-bus design |
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Improved timekeeping accuracy with PCF85063, PCF8523 and PCF2123 using an external temperature sensor |
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Hardware Design Considerations for MKW41Z/31Z/21Z BLE and IEEE 802.15.4 Devices |
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FRDM-KW41Z RF System Evaluation Report for BLE Applications |
Related Software
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Related Demos from Communities
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