The NuMicro® NSC128L42 is a highly integrated microcontroller specifically designed for high-precision applications such as electronic scales and sphygmomanometers. It is well-suited for any product requiring high-precision measurement, display capabilities, and voice output.

The chip perfectly integrates a 24-bit Sigma-Delta ADC, an LCD driver, and advanced voice compression and playback functionality. With its built-in hardware-based signal processing and direct-drive speaker capability, the NSC128L42 significantly simplifies hardware circuit design and reduces overall system BOM costs, enabling customers to achieve faster time-to-market and seamless mass production.

• Feature
  

  	Highly Integrated AFE
  -	Seamless Integration: 24-bit Sigma-Delta ADC paired with a 6-stage hardware Biquad filter.
  -	CPU Efficiency: Hardware-based filtering performs all digital signal processing tasks with zero CPU overhead.
  	Highly Integrated Voice Solution
  -	Embedded Storage: 320 KB internal Flash eliminates the need for external SPI Flash.
  -	Direct-Drive Audio: Integrated Class-D amplifier drives speakers directly, minimizing system complexity and BOM costs.

• Specifications

  NSC128L42 (32-bit Arm® Cortex®-M23)
  -	Operating Frequency: 49.152 MHz
  -	Operating Voltage: 2.0 V to 5.5 V
  -	Memory: 320 KB Flash + 6 KB ISP Flash memory / 18 KB SRAM
  -	BIQ Block: Highly flexible 6-stage Biquad filter design allows for versatile digital filtering implementation
  -	Sigma-Delta ADC: 24-bit Sigma-Delta ADC with direct connection to the internal BIQ block
  -	SAR ADC: 12-bit
  -	LCD Driver: 4 × 48, 6 × 46, 8 × 44 COM/SEG
  -	Audio Output: Class-D Amplifier, 0.35 W, 3.6 V, 8 Ω
  -	Connectivity: UART × 3, SPIM, SPI, I²C
  -	PWM: 3 channels, 14-bit
  -	Timer: 3 × 16-bit Timer + RTC + WDT
  -	PDMA: Supports 6 independently configurable channels
  -	Package: LQFP-64/80/128

• System Block Diagram