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 I2C 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.

CPU Features

• Operating Voltage
  • fSYS = 4MHz: 1.8V~5.5V
  • fSYS = 8MHz: 2.0V~5.5V
  • fSYS = 12MHz: 2.7V~5.5V
  • fSYS = 16MHz: 3.3V~5.5V
• Up to 0.25us instruction cycle with 16MHz system clock at VDD =5V
• Power down and wake-up functions to reduce power consumption
• Oscillators
  • External Crystal -- HXT
  • External 32.768kHz Crystal -- LXT
  • Internal RC -- HIRC
  • Internal 32kHz RC -- LIRC
• Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
• Fully integrated internal 4/8/12MHz oscillator requires no external components
• All instructions executed in one or two instruction cycles
• Table read instructions
• 61 powerful instructions
• 8-level subroutine nesting
• Bit manipulation instruction

Peripheral Features

• Flash Program Memory: 8Kx16
• RAM Data Memory: 256x8
• True EEPROM Memory: 64x8
• Watchdog Timer function
• 26 bidirectional I/O lines
• Software controlled 4-SCOM lines LCD driver with 1/2 bias
• Two pin-shared external interrupts
• Multiple Timer Modules for time measure, input capture, compare match output, PWM output or single pulse output functions
• Comparator function
• Dual Time-Base functions for generation of fixed time interrupt signals
• 8-channel 12-bit resolution A/D converter
• I2C function (only for 24/28-pin package)
• Universal Asynchronous Receiver Transmitter – UART (only for 16/24/28-pin package)
• PMOS source current adjustable
• 5-level Low Voltage Reset function
• 8-level Low Voltage Detect function
• Flash program memory can be re-programmed up to 10,000 times
• Flash program memory data retention > 10 years
• True EEPROM data memory can be re-programmed up to 100,000 times
• True EEPROM data memory data retention > 10 years
• Package type:16-pin NSOP, 20/24-pin SOP/SSOP, 28-pin SOP/SSOP

Specification:

• max. frequency: 16MHz
• VDD: 1.8V~5.5V
• program memory: 8Kx16
• data memory: 256x8
• data EEPROM: 64x8
• stack: 8
• I/O: 26
• timer: 10-bit PTM×1, 16-bit CMTx1, 16-bit STMx1
• ADC: 12-bitx8
• interface: I²C×1, UART×1
• case: 20SOP