General Description

The HT67F2355 is a Flash Memory A/D 8-bit high performance RISC architecture microcontroller  with LCD driver designed for a wide range of applications that interface directly to analog signals  and require an LCD display.

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. By using the  In Application Programming technology, users have a convenient means to directly store their  measured data in the Flash Program Memory as well as having the ability to easily update their  application programs.

Analog features include a multi-channel 12-bit A/D converter function. 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, UART  or I2 C interface functions, the popular interface 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, internal, high and low oscillator is provided including two fully integrated  system oscillators which require no external components for its 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 both LCD and LED driver functions allows for easy and cost effective solutions in  applications that require interface to these display types.

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 LED/LCD product applications such as  temperature controllers, air conditioner remote controls, electric vehicle meters and household  appliance control panels.