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 I²C 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.

CPU Features

• Operating Voltage: fSYS =8MHz: 1.8V~5.5V
• Up to 0.5μs instruction cycle with 8MHz system clock at VDD =5V
• Power down and wake-up functions to reduce power consumption
• Oscillator Types
  • Internal High Speed 8MHz RC – HIRC
  • Internal Low Speed 32kHz RC – LIRC
• Fully integrated internal 8MHz oscillator requires no external components
• Multi-mode operation: FAST, SLOW, IDLE and SLEEP
• All instructions executed in one to three instruction cycles
• Table read instructions
• 115 powerful instructions
• 8-level subroutine nesting
• Bit manipulation instruction

Peripheral Features

• Flash Program Memory: 4K×16 ~ 8K×16
• Data Memory: 512×8
• True EEPROM Memory: 512×8
• In Application Programming function – IAP
• Watchdog Timer function
• 18 bidirectional I/O lines
• Programmable I/O source current for LED applications
• Two external interrupt lines shared with I/O pins
• Multiple Timer Modules for time measure, compare match output, PWM output function or single pulse output function
• Universal Serial Interface Module – USIM for SPI, I²C or UART communication
• High-Speed fully-duplex or half-duplex Universal Asynchronous Receiver and Transmitter Interface
• Dual Time-Base functions for generation of fixed time interrupt signals
• Two comparator functions
• 8 external channel 12-bit resolution A/D converter with internal reference voltage VR
• Low voltage reset function
• Low voltage detect function
• Package types: 8-pin SOP, 10-pin MSOP, 16-pin NSOP/QFN, 20-pin SSOP

Specification:

• max. frequency: 8MHz
• VDD: 1.8V~5.5V
• program memory: 4Kx16
• data memory: 512x8
• EEPROM: 512x8
• stack: 8
• I/O: 18
• timer: 10-bit PTM×1, 16-bit CTM×1, 16-bit STM×1
• ADC: 12-bitx7
• comparator: 2
• interface: UART×1, UART/SPI/I²C×1
• case: 8SOP