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.

Analog features include a multi-channel 12-bit Analog-to-Digital 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 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 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 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.

CPU Features

• Operating voltage: fSYS =8MHz: 2.2V~5.5V
• Up to 0.5us instruction cycle with 8MHz system clock at VDD =5V
• Power down and wake-up functions to reduce power consumption
• Oscillators:
  • - Internal RC -- HIRC
  • - Internal 32kHz RC -- LIRC
• Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
• Fully integrated internal 8MHz oscillator requires no external components
• All instructions executed in one or two instruction cycles
• Table read instructions
• 63 powerful instructions
• 6-level subroutine nesting
• Bit manipulation instruction

Peripheral Features

• Flash Program Memory: 4Kx16
• RAM Data Memory: 128x8
• Watchdog Timer function
• 18 bidirectional I/O lines
• Two pin-shared external interrupts
• Multiple Timer Modules for time measure, input capture, compare match output, PWM output or single pulse output functions
• Dual Time-Base functions for generation of fixed time interrupt signals
• 8-channel 12-bit resolution A/D converter
• Low voltage reset function
• Package type: 16-pin/20-pin NSOP

Specification:

• max. frequency: 8MHz
• VDD: 2.2V~5.5V
• program memory: 4Kx16
• data memory: 128x8
• data EEPROM: -
• stack: 6
• I/O: 18
• timer: 10-bit PTM×1, 10-bit STM×1
• ADC: 12-bitx8
• interface: 
• case: 20NSOP