Heart Rate Monitor
NXP technology powers heart rate monitors by using transducers that can measure and amplify a heartbeat. This can be used to detect a heartbeat during exercise or to amplify a prenatal infant’s heartbeat by using the Doppler Effect. The function-specific sensor measures the heart signals and then, sends the data to a smartphone to, later on, analyze the data for medical or healthcare purposes.
Supported Devices
Wireless Connectivity
Bluetooth Low Energy
- QN9090-30: QN9090/30: Bluetooth Low-Energy MCU with Arm®Cortex®-M4 CPU, Energy Efficiency, Analog and Digital Peripherals and NFC Tag Option
Power Management
Battery Chargers
- MC34673: 1.2 A Single-Cell Li-Ion / Li-Polymer Battery Charger
LED Drivers
- PCA9633: 4-Bit Fm+ I²C-Bus LED Driver
Interfaces
General Purpose I/O (GPIO)
- PCAL6408A: Low-Voltage Translating, 8-Bit I²C-Bus/SMBus I/O Expander
Analog and Mixed Signal
Real-Time Clocks
- PCF2123: SPI Real-Time Clock/Calendar
Features
CPU and Memory
- Up to 48MHz Cortex-M4
- Up to 640 kB flash, up to 152 kB RAM, 128 kB ROM
- NFC NTAG Option with EEPROM
- Quad-SPI for execute in place or data storage in NVM
RF performance/power consumption
- -97 dBm RX sensitivity
- Up to 11dBm TX power
- RX 4.3mA, DC/DC on at 3V
- TX 7.4mA @ 0dBm, 20.5mA @ 10dBm
- BLE 5.0 with 2Mbps and up to 8 simultaneous connections
Digital and Analog Interfaces
- UART/SPI/I2C up to 2
- ISO7816 Interface for Secure Access Module
- 8 ch 12-bit ADC
- 1 Analog comparator
- Digital Microphone Interface and Audio Event Detection
Clocks and timers
- 32 MHz and 32.768 kHz crystals
- Low and High Frequency Internal Clock sources
- 4 x general purpose timer
- 32K sleep timer
- Watchdog timer
- RTC with calibration
Documentation
Quick reference to our documentation types.