The device is a Flash Memory A/D 8-bit high performance RISC architecture microcontroller, designed for applications that interface directly to analog signals. Offering users the convenience of Flash Memory multi-programming features, this 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 one comparator functions. 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, I²C and UART interface functions, these 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 are provided including two fully integrated system oscillators which require 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 minimise power consumption.

The inclusion of flexible I/O programming features, a 16-bit MDU, 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
• oscillators
  • - external High Speed Crystal – HXT
  • - external Low Speed 32.768kHz Crystal – LXT
  • - internal High Speed 8/12/16MHz RC – HIRC
  • - internal 32kHz RC – LIRC
• fully integrated internal oscillators require no external components
• multi-mode operation: FAST, SLOW, IDLE and SLEEP
• all instructions executed in 1~3 instruction cycles
• table read instructions
• 115 powerful instructions
• 16-level subroutine nesting
• bit manipulation instruction

Peripheral features:

• flash program memory: 16K×16
• RAM data memory: 2048×8
• true EEPROM memory: 1024×8
• in application programming – IAP
• watchdog timer function
• up to 32 bidirectional I/O lines
• 2 differential or 4 single-end channel 24-bit resolution Delta Sigma A/D converter
• programmable I/O source current for LED applications
• software controlled 4-SCOM line LCD driver with 1/2 bias
• four external interrupt lines shared with I/O pins
• multiple timer modules for time measurement, input capture, compare match output, PWM output function or single pulse output function
  • - dual 16-bit STM (STM0~STM1)
  • - dual 10-bit PTM (PTM0~PTM1)
  • - dual 16-bit PTM (PTM2~PTM3)
• serial interface module – SIM for SPI or I²C
• two fully-duplex universal asynchronous receiver and transmitter interfaces – UARTs
• dual time base functions for generation of fixed time interrupt signals
• one comparator function
• 9 external channel 12-bit resolution A/D converter with Internal Reference Voltage VR
• integrated multiplier/divider unit – MDU
• integrated 16-bit cyclic redundancy check function – CRC
• internal on-chip debug support function – OCDS
• low voltage reset function – LVR
• low voltage detect function – LVD
• package type: 48-pin LQFP