The main controller uses the NuMicro® CM2003 microcontroller based on the high-performance Arm® Cortex®-M23 core. Its wide voltage range, high anti-interference capability, and support for the Modbus RTU protocol allow for safe and rapid deployment in various industrial applications.

This solution also integrates a high-performance 24-bit Delta-sigma (ΔΣ) ADC. The NADC24 outputs up to 22 effective bits (ENOB) and can achieve sampling rates up to 96 kbps. Its superior low-noise performance is designed to provide excellent high-precision, rapid analog signal acquisition in industrial environments.

Feature
•Thermocouple temperature measurement, stress gauge weighing
•0 to 10V voltage, 0 to 20mA current measurement
•2-channel isolated PWM power regulation
•1-channel isolated IO input detection
•1-channel RS485

Specifications
CM2003 (32-bit Arm® Cortex®-M23 )
•Operating voltage: 2.4V to 5.5V
•Wide operating temperature range: -40°C to +105°C
•High-precision built-in clock
•High interference immunity
•20-pin small package
•Built-in verified high-precision bandgap

System Block Diagram