Arm^® Cortex^®-M23 High-Precision Blood Pressure Monitoring MCU

The NSC128L42 series is the world‘s first highly-integrated microcontroller specifically designed for blood pressure monitor applications, based on Arm^® Cortex^®-M23 32-bit core architecture, revolutionarily integrating all essential functions required for blood pressure monitoring into a single chip.

Industry-Leading Integration: Uniquely integrates 24-bit Sigma-Delta ADC high-precision analog-to-digital converter, Class-D audio amplifier with voice announcement capability, LCD direct drive controller, operational amplifiers, and complete digital peripheral interfaces, providing unprecedented system integration.

Outstanding Performance: Maximum operating frequency of 49.152 MHz, built-in 320 KB Flash memory + 18 KB SRAM, operating voltage range 2.0V to 5.5V, operating temperature -40°C to 85°C, deep power-down mode consumption < 1 μA, fully meeting the stringent requirements of portable blood pressure monitors.

Medical-Grade Precision: 24-bit SDADC provides ultra-high precision pressure sensing with up to 500 Hz sampling rate, 12-bit SARADC supports multi-channel fast sampling, ensuring accuracy and stability of blood pressure measurements, providing reliable measurement foundation for medical devices.

• Features
  

  -	Measurement: Dual ADC, medical-grade precision
  -	Display: Built-in LCD driver
  -	Audio: Integrated system, no extra chips
  -	Memory: Large-capacity storage
  -	Connectivity: Multiple interfaces & protocols
  -	Power: Ultra-low standby consumption
  -	Reliability: Industrial-grade temperature

• Specifications
  

  -	Processor: Arm® Cortex®-M23 operating at 49.152 MHz, with 320 KB Flash Memory + 18 KB SRAM
  -	Power: 2.0V to 5.5V operating voltage, < 1 μA deep power-down
  -	Conversion: 24-bit Sigma-Delta ADC, 12-bit SAR ADC
  -	Display: LCD driver 4×48/6×46/8×44 COM/SEG
  -	Audio: Class-D amplifier 0.35W at 3.6V
  -	Rich Peripheral Interfaces: 3×UART, SPI, I2C, PWM, Timers, PDMA
  -	Package: LQFP48/64/80/128

• System Block Diagram