BH67F2260 Datasheet, PDF (8/253 Pages) Holtek Semiconductor Inc – R-Sensor Blood Pressure Meter Flash MCU with LCD

BH67F2260/BH67F2270
R-Sensor Blood Pressure Meter Flash MCU with LCD
• R-type Sensor Blood Pressure AFE
♦♦ 4 external channels 12-bit resolution A/D converter
♦♦ PGA and OPA modules
♦♦ Constand Current Control
♦♦ Battery Voltage Detection
• 16-bit Multiplication Division Unit
• LCD COM driver with 1/3 or 1/4 bias
• Low voltage reset function
• Low voltage detect function
• Internal 3.3V LDO
• Package types: 64/80-pin LQFP
General Description
This series of devices are Flash Memory A/D type 8-bit high performance RISC architecture
microcontroller, specifically designed for Blood-Pressure Meter applications. Offering users the
convenience of Flash Memory multi-programming features, these devices also include a wide range
of functions and 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, PGA and OPA functions. 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, SPIA and UART interface functions, popular interfaces which provide designers with a means
of easy communication with external peripheral hardware. In addition, an internal LDO function
provides various power options to the internal modules and external devices. 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, 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 optimize microcontroller operation and minimize power consumption.
The inclusion of flexible I/O programming features, a fully integrated LCD driver, a 16-bit MDU
and Time-Base funcitons along with many other features enhance the versatility of these devices to
enable quick and cost efficient Blood-Pressure Meter applicaitons.
Rev. 1.00
8
March 15, 2017