BH67F2762
24-bit Delta Sigma A/D Flash MCU with LCD and OPA
The BH67F2762 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, designed for applications that interface directly to analog signals and which require a low noise and high accuracy analog-to-digital converter.
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. Extremely flexible Timer Modules provide timing, pulse generation and PWM generation functions. Communication with the outside world is implemented using fully integrated I2C, SPI and UART interfaces, 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 and internal low and high oscillator functions are 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 functions along with many other features ensure that the device will find excellent use in applications such as weight scales, electronic metering, environmental monitoring, handheld instruments, household appliances, electronically controlled tools, motor driving in addition to many others.
Product Details
- Operating Voltage
fSYS=4MHz: 2.2V~5.5V
fSYS=8MHz: 2.2V~5.5V
fSYS=12MHz: 2.7V~5.5V - Up to 0.33μs instruction cycle with 12MHz system clock at VDD=5V
- Power down and wake-up functions to reduce power consumption
- Oscillators
– Internal High Speed 4/8/12MHz RC Oscillator – HIRC
– Internal Low Speed 32kHz RC Oscillator – LIRC
– External Low Speed 32.768kHz Crystal – LXT - Fully integrated internal oscillators require no external components
- Multi-mode operation: FAST, SLOW, IDLE and SLEEP
- All instructions executed in 1~3 instruction cycles
- Table read instructions
- 115 powerful instructions
- 8-level subroutine nesting
- Bit manipulation instruction
- Flash Program Memory: 16K×16
- RAM Data Memory: 1024×8
- True EEPROM Memory: 256×8
- In Application Programming – IAP
- Watchdog Timer function
- Up to 38 bidirectional I/O lines
- Four pin-shared external interrupts
- 4 differential or 8 single-end channels 24-bit resolution Delta Sigma A/D converter
- Multiple Timer Modules for time measurement, input capture, compare match output, PWM output function or single pulse output function
- LCD Driver function
– SEGs×COMs: 39×4 or 37×6
– Duty type: 1/4 duty or 1/6 duty
– Bias level: 1/3 bias
– Bias type: R type
– Waveform type: type A or type B - Universial Serial Interface Module – USIM for SPI, I2C or UART communication
- Dual Time Base functions for generation of fixed time interrupt signals
- Low Voltage Reset function – LVR
- Low Voltage Detect function – LVD
- Package types: 48/64-pin LQFP
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Design And Development
BMHB6004-plus Infrared Thermometer Development Board (with sensor)
Description
The BMHB6004-plus is a development board for Holtek infrared thermometer Flash MCU BH67F2762. It is designed and produced by Best Health Electronics Inc.
The BH67F2762 includes an integrated Infrared thermometer circuit (an OPA, LDO, PGA, and a 24-bit Delta-Sigma A/D Converter included). The EEPROM memory can be automatically calibrated during production by software and the UART / SPI interfaces can be used for connecting to peripheral devices such as Bluetooth etc.