General Description

The devices are an A/D type Flash Memory 8-bit high performance RISC architecture microcontrollers.

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  number, 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 and dual 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 SPI, UART or I2 C interface functions, three popular interfaces which provide designers  with a means of easy comminucation 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 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 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 these devices 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.