BH66F2742

24-bit A/D Flash MCU

General Information

The device is a Flash Memory A/D type 8-bit high performance RISC architecture microcontroller which includes a multi-channel 24-bit Delta Sigma A/D converter with Accurate Temperature Sensor.

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 24-bit Delta Sigma A/D Converter and Operational Amplifier fucntions. The extremely flexible Timer Module provides 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 and Low Voltage Reset coupled with excellent noise immunity and ESD protection ensure that reliable operation is maintained in hostile electrical environments.

The device also includes fully integrated high and low 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 functions along with many other features enhance the versatility of the device to suit for applications that interface directly to analog signals and which require the low noise and high accuracy analog to digital converter.

 

CPU Features

Operating voltage

- fSYS =8MHz: 2.2V~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
Multi-mode operation

FAST, SLOW, IDLE and SLEEP

Fully integrated internal oscillators require no external componentsAvailable
All instructions executed in 1~3 instruction cyclesAvailable
Table read instructionsAvailable
115 powerful instructionsAvailable
6-level subroutine nestingAvailable
Bit manipulation instructionAvailable

Peripheral Features

Flash Program Memory

4K×16

Data Memory

256×8

True EEPROM Memory

32×8

Watchdog Timer functionAvailable
4 bidirectional I/O linesAvailable
Single external interrupt line shared with I/O pinAvailable
Single Timer Module for time measurement, compare match output or PWM output functionAvailable
Universal Serial Interface Module – USIM for SPI, I2C or UART communicationAvailable
Dual Time-Base functions for generation of fixed time interrupt signalsAvailable
1 differential or 2 single-end channel 24-bit resolution Delta Sigma A/D converter with Accurate Temperature SensorAvailable
Low voltage reset functionAvailable
Package types

16-pin SSOP, 24-pin QFN

Resources

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