BH66F2560
Pulse Oximeter Flash MCU
General Information
(BH66F2560 24QFN Restricted Products. Notification Date : 2026/04/09 Effective Date : 2026/07/09)
The device is a Flash Memory A/D type 8-bit high performance RISC architecture microcontroller, specifically designed for Pulse Oximeter applications.
For memory features, the Flash Memory offers users the convenience of multi-programming features. Other memory includes an area of RAM Data Memory as well as an area of true EEPROM memory for storage of non-volatile data such as serial numbers, calibration data etc.
Analog features include a multi-channel 12-bit A/D Converter, Operational Amplifiers and D/A Converters. Multiple and extremely flexible Timer Modules provide timing, pulse generation and PWM generation functions. Communication with the outside world is catered for by including fully integrated SPI, I²C and UART interface functions, three popular interfaces which provide designers with a means of easy communication with external peripheral hardware. Protective features such as an internal Watchdog Timer, Low Voltage Reset and Low Voltage Detector coupled with excellent noise immunity and ESD protection ensure that reliable operation is maintained in hostile electrical environments.
A full choice of external high, internal high and low oscillators is provided including two fully integrated system oscillators which require no external components for their implementation. The ability to operate and switch dynamically between a range of operating modes using different clock sources gives users the ability to optimise microcontroller operation and minimise power consumption.
The inclusion of flexible I/O programming features, Time-Base funcitons, a CRC and Sink Current Generator along with many other features ensure that these devices will find excellent use in different Pulse Oximeter applications.
CPU Features
| Attribute | Value |
|---|---|
| Operating voltage |
|
| Up to 0.25μs instruction cycle with 16MHz system clock | Available |
| Power down and wake-up functions to reduce power consumption | Available |
| Oscillator types |
|
| Multi-mode operation | FAST, SLOW, IDLE and SLEEP |
| Fully integrated internal oscillators require no external components | Available |
| All instructions executed in 1~3 instruction cycles | Available |
| Table read instructions | Available |
| 115 powerful instructions | Available |
| 16-level subroutine nesting | Available |
| Bit manipulation instruction | Available |
Peripheral Features
| Attribute | Value |
|---|---|
| Flash Program Memory | 16K×16 |
| Data Memory | 1024×8 |
| True EEPROM Memory | 1024×8 |
| Watchdog Timer function | Available |
| 24 bidirectional I/O lines | Available |
| Programmable I/O source current for LED applications | Available |
| Two external interrupt lines shared with I/O pins | Available |
| Multiple Timer Modules for time measure, input capture, compare match output, PWM output function or single pulse output function | Available |
| Serial Interface Module – SIM includes SPI and I²C interfaces | Available |
| Fully-duplex/Half-duplex Universal Asynchronous Receiver and Transmitter Interface – UART | Available |
| Dual Time-Base functions for generation of fixed time interrupt signals | Available |
| Software controlled 4-SCOM line LCD driver with 1/2 bias | Available |
| 8 external channel 12-bit resolution A/D converter with internal reference voltage VVR | Available |
| Pulse Oximeter AFE circuit |
|
| Low voltage reset function | Available |
| Low voltage detect function | Available |
| Package type | 32-pin QFN |
Resources
| Title | Date | File Size | Language | Download |
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