MCU Products
Professional microcontroller solutions for your applications
The BH67F5255 is a Flash Memory 8-bit high-performance RISC microcontroller designed for applications requiring precise analog-to-digital conversion. At its heart is a powerful multi-channel 24-bit Delta Sigma A/D converter, making it ideal for low-noise, high-accuracy interface capabilities.
The device offers exceptional memory flexibility, including Flash Program Memory, RAM, and true EEPROM for storing critical non-volatile information like calibration data. With In-Application Programming (IAP) technology, users can easily update firmware and log data directly into Flash memory without removing the device.
Highly integrated for reduced system cost, the BH67F5255 features a built-in LCD driver, internal high/low-speed oscillators, and comprehensive communication interfaces (SPI, I²C, UART). Its robust design ensures reliability in demanding electrical environments through advanced noise immunity, ESD protection, and safety mechanisms such as Watchdog Timer and Low Voltage Detect.
Features
High-Precision Analog Front-End
- - 24-bit Delta Sigma ADC: High-resolution conversion for medical-grade accuracy.
- - Integrated Low Noise OPA: Built-in Operational Amplifier amplifies weak sensor signals directly, eliminating external amps.
- - Integrated LDO & PGA: Built-in power supply and programmable gain amplifier reduce BOM cost and PCB area.
- - Flexible Channel Config: Supports 2 differential or 4 single-ended channels for versatile sensor connections.
Ultra-Low Power for Portable Devices
- - Wide Operating Voltage: 2.2V ~ 5.5V operation range compatible with various battery types.
- - Extended Battery Life: Static current ≤ 5 μA ensures years of standby time on standard batteries.
- - Smart Power Management: Flexible clock sources (HIRC) and multiple power-down modes to optimize energy usage.
High Integration & Connectivity
- - Rich Memory Resources: Integrated Flash, RAM, and True EEPROM for storing calibration data.
- - Versatile Interfaces: Fully integrated I²C, SPI, and UART for easy communication with peripherals.
- - Smart Manufacturing: Supports In-Application Programming (IAP) for convenient firmware updates and production line calibration.
- - Built-in LCD Driver: Directly drives LCD panels (up to 24SEG × 4COM), saving the cost of an external driver.
System Reliability
- - Enhanced Safety: Built-in Watchdog Timer (WDT), Low Voltage Reset (LVR), and Low Voltage Detector (LVD) ensure system stability.
- - Interference Immunity: Superior ESD protection and noise immunity design for reliable operation in complex environments.
- - Flexible Clocking: Dynamic internal/external clock switching for stable performance.
