MCU Products
Professional microcontroller solutions for your applications
The BH66F2455 is a high-performance 8-bit RISC Flash MCU specifically engineered for Continuous Glucose Monitoring (CGM) applications. It integrates a complete Analog Front-End (AFE) with power-saving features to minimize external components and extend battery life.
Specialized CGM AFE: Integrated 24-bit Delta-Sigma ADC, three 12-bit DACs, and three Operational Amplifiers provide clinical-grade measurement precision and flexible sensor biasing.
Flexible Memory Architecture: Includes Flash Program Memory, RAM, and True EEPROM. Supports In-Application Programming (IAP) for convenient storage of calibration data and firmware updates.
Seamless Connectivity: Built-in SPI and UART interfaces ensure reliable communication with external wireless SoCs (such as BLE modules).
Ultra-Low Power Design: Features fully integrated system oscillators (HIRC/MIRC/LIRC) with dynamic switching, achieving exceptional energy efficiency for long-term wear.
Reliability: Enhanced with Watchdog Timer (WDT), Low Voltage Reset (LVR), and superior noise immunity to ensure stable operation in complex electrical environments.
Features
Power Efficiency & Flexibility
- - Wide Operating Voltage: 2.2V ~ 5.5V, suitable for various battery configurations.
- - Ultra-Low Power: Advanced power management with dynamic clock switching (HIRC/MIRC/LIRC) and a dedicated 3.7μA Standby mode to maximize sensor runtime.
Precision Analog (CGM AFE)
- - High-Resolution Sensing: Integrated 24-bit Delta-Sigma ADC for clinical-grade measurement accuracy .
- - Integrated AFE: Built-in 3× 12-bit DACs and 3× Operational Amplifiers (OPA) provide complete hardware support for bias voltage and signal amplification without external components.
- - Data Storage: Flash Program Memory & True EEPROM with IAP support for reliable storage of calibration parameters and user data.
System Reliability & Connectivity
- - Robust Interfaces: Integrated SPI / UART interfaces for seamless communication with the wireless SoC (BLE).
- - Data Integrity: Built-in 16-bit CRC ensures data accuracy during transmission.
- - Safety Features: Enhanced ESD protection, Watchdog Timer (WDT), and Low Voltage Reset (LVR) ensure reliable operation in complex environments.
