The device is an A/D type Flash Memory 8-bit high performance RISC architecture microcontroller with LCD driver designed for a wide range of applications that interface directly to analog signals and require an LCD display.

For memory features, the Flash Memory offers users the convenience of multi-programming 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 a comparator function as well as a 24-bit Delta Sigma A/D converter which includes a programmable gain amplifier and is designed for applications that interface differentially to analog signals. 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 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 external, 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 the device will find excellent use in applications such as electronic scales, blood pressure meters, blood glucose meters, pressure switches, industrial control, instruments and other high accuracy measuring products.

CPU features:

• operating voltage
  • - fSYS =8MHz: 1.8V~5.5V
  • - fSYS =12MHz: 2.7V~5.5V
  • - fSYS =16MHz: 3.3V~5.5V
• up to 0.25μs instruction cycle with 16MHz system clock at VDD =5V
• power down and wake-up functions to reduce power consumption
• oscillator types
  • - external high speed crystal – HXT
  • - internal high speed 8/12/16MHz RC – HIRC
  • - external low speed 32.768kHz Crystal – LXT
  • - internal low speed 32kHz RC – LIRC
• fully integrated internal oscillators require 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
• 16-level subroutine nesting
• bit manipulation instruction

Peripheral features:

• flash program memory: 16K×16
• data memory: 2048×8
• true EEPROM memory: 1024×8
• in application programming function – IAP
• internal on-chip debug support function – OCDS
• watchdog timer function
• 45 bidirectional I/O lines
• programmable I/O source current for LED applications
• LCD driver function:
  • - SEGs × COMs: 36×4, 34×6 or 32×8
  • - duty type: 1/4 duty, 1/6 duty or 1/8 duty
  • - bias level: 1/3 bias or 1/4 bias
  • - bias type: R type
  • - waveform type: type A or type B
• four 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
  • - three 16-bit STM (STM0~2)
  • - six 10-bit PTM (PTM0,1,4~7)
  • - dual 16-bit PTM (PTM2~3)
• serial interface module – SIM includes SPI and I²C interfaces
• two fully-duplex Universal Asynchronous Receiver and Transmitter Interfaces – UARTs
• dual time-base functions for generation of fixed time interrupt signals
• one comparator function
• 14 external channels 12-bit resolution A/D converter with internal reference voltage VR
• 2 differential or 4 single-end external channel 24-bit resolution Delta Sigma A/D converter
• integrated multiplier/divider unit – MDU
• integrated 16-bit cyclic redundancy check function – CRC
• low voltage reset function
• low voltage detect function
• package type: 64-pin LQFP