BH66R2040

Health Measurement OTP MCU

General Information

The device is an OTP Program Memory 8-bit high performance RISC architecture microcontroller device with Health Measure AFE module that is applicable to multi-function health measurement applications.

For memory features, the device is supplied with One-Time Programmable, OTP memory. Other memory includes an area of RAM Data Memory.

Analog features include a multi-channel 24-bit Delta Sigma A/D converter, three 12-bit D/A converters and three internal operational amplifiers . 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 comminucation with external peripheral hardware. Protective features such as an internal Watchdog Timer, Low Voltage Reset and Low Voltage Detect coupled with excellent noise immunity and ESD protection ensure that reliable operation is maintained in hostile electrical environments.

A full choice of internal high and low oscillator functions 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.

With regard to health measurement applications, the device has integrated many of the functions required by these products. These include functions such as Internal Reference Voltage generator, Internal LDO, 24-bit Delta Sigma A/D converts, 12-bit D/A converts, operational amplifiers and etc. The inclusion of flexible I/O programming features, Time Base functions along with many other features enhance the versatility of the device to suit for multi-function health measurement applications such as glucose meter, blood pressure, thermopile sensor and so on.

CPU Features

Operating Voltage

- fSYS =8MHz: 1.8V~5.5V

Up to 0.5μs instruction cycle with 8MHz system clock at VDD =5VAvailable
Power down and wake-up functions to reduce power consumptionAvailable
Oscillator Types
  • - Internal High Speed 8MHz RC – HIRC
  • - Internal Low Speed 32kHz RC – LIRC
Fully integrated internal oscillators require no external componentsAvailable
Multi-mode operation

FAST, SLOW, IDLE and SLEEP

All instructions executed in 1~3 instruction cyclesAvailable
Table read instructionsAvailable
115 powerful instructionsAvailable
12-level subroutine nestingAvailable
Bit manipulation instructionAvailable

Peripheral Features

OTP Program Memory

4K×16

Data Memory

512×8

OTP ROM parameter program – ORPPAvailable
Watchdog Timer functionAvailable
11 bidirectional I/O linesAvailable
2 external interrupt lines shared with I/O pinsAvailable
One Multiple Timer Module for time measure, compare match output or PWM output functionAvailable
Dual Time Base functions for generation of fixed time interrupt signalsAvailable
Health Measure AFE
  • - Multi-channel 24-bit resolution Delta Sigma A/D Converters
  • - Internal LDO
  • - Internal Reference Voltage Generator
  • - Three 12-bit D/A Converters
  • - Three internal Operational Amplifiers
Serial Interface Module – SIM for SPI or I2C interfaceAvailable
Fully-duplex / Half-duplex Universal Asynchronous Receiver and Transmitter Interface – UARTAvailable
Low voltage reset functionAvailable
Low voltage detect functionAvailable
Package type

32-pin QFN

Resources

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