General Description

The HT67F488/HT67F489 series of devices are Flash Memory A/D type 8-bit high performance  RISC architecture microcontrollers, designed especially for applications that interface directly to  analog signals, such as those from sensors. Offering users the convenience of Flash Memory multiprogramming 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 (only  for HT67F489) for storage of non-volatile data such as serial numbers, calibration data etc.

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. 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 HIRC, HXT, LXT and LIRC oscillator functions are provided including a fully  integrated system oscillator which requires 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 minimize power  consumption.

The UART module is contained in these devices. It can support the applications such as data  communication networks between microcontrollers, low-cost data links between PCs and peripheral  devices, portable and battery operated device communication, etc. 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 enhance the versatility of these devices to suit a wide range of A/D application possibilities  such as sensor signal processing, chargers, motor driving, industrial control, consumer products,  subsystem controllers, etc.