MCU Products
Professional microcontroller solutions for your applications
The BH67F5265 is a high-performance 8-bit RISC microcontroller designed for multi-function infrared thermometers and precision measurement devices. While sharing the same high-precision 24-bit Delta Sigma A/D converter core as the 5255 series, the BH67F5265 offers significantly expanded system resources.
With 16K words of Flash Memory and 1024 bytes of true EEPROM, this device is optimized for applications requiring extensive data logging (Memory Recall) or complex firmware algorithms. The integrated In-Application Programming (IAP) feature allows for convenient measurement data storage and easy firmware updates.
In addition to the built-in LCD driver, Low Noise OPA, and power management circuits, the BH67F5265 provides flexible package options (48/64-LQFP). This increased I/O count supports richer user interfaces, such as dual-color backlights and multiple function keys, making it the ideal choice for mid-to-high-end medical devices.
Features
High-Precision Analog Front-End
- - 24-bit Delta Sigma ADC: High-resolution converter ensures medical-grade measurement accuracy.
- - Integrated Low Noise OPA: Built-in Operational Amplifier directly handles weak sensor signals, eliminating the need for external components.
- - Integrated LDO & PGA: Built-in Linear Regulator and Programmable Gain Amplifier reduce system cost and PCB footprint.
- - Flexible Channel Configuration: Supports 2 differential or 4 single-ended external channels for versatile sensor interface.
Ultra-Low Power & Wide Voltage
- - Broad Operating Voltage: 2.2V ~ 5.5V range, compatible with various battery configurations.
- - Extended Battery Life: Features selectable clock sources and ultra-low power-down modes ideal for portable medical devices.
High Integration & Connectivity
- - Integrated LCD Driver: Directly drives display panels (up to 24SEG × 4COM), saving external driver costs.
- - Rich Memory Resources: Built-in Flash, RAM, and True EEPROM for storing critical calibration data.
- - Smart Connectivity: Full suite of interfaces (I²C / SPI / UART) for easy communication with peripherals.
- - IAP Support: In-Application Programming (IAP) enables convenient firmware updates and production line calibration.
System Reliability
- - Robust Protection: Built-in Watchdog Timer (WDT), Low Voltage Reset (LVR), and Low Voltage Detector (LVD) ensure fail-safe operation.
- - Industrial-Grade Immunity: Superior design with strong noise immunity and ESD protection for reliable performance in complex environments.
