General Description

The device is a Flash Memory type 8-bit high performance RISC architecture microcontroller.  Offering users the convenience of Flash Memory multi-programming features, the device also  includes 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 and a comparator 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  I2 C interface function, the popular interface which provides 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 HXT, LXT, HIRC 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 only contained in the 16/24/28-pin package. 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 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 electronic metering,  environmental monitoring, handheld instruments, household appliances, electronically controlled  tools, motor driving in addition to many others.