The device is a Flash Memory type 8-bit high performance RISC architecture microcontroller.

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 numbers, 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. Multiple and extremely flexible Timer Modules provide timing, pulse generation and PWM output functions. Communication with the outside world is catered for by including fully integrated SPI, I²C, UART and CAN Bus 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 and internal low and high oscillator functions are provided including 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 device includes a fully integrated CAN (Controller Area Network) bus controller. The CAN Module licensed from Bosch supports the CAN 2.0 Part A and B protocol specifications and compatible with the ISO11898-1 standards. This CAN Module abbreviated as C_CAN. It is capable of transmitting and receiving standard and extended messages. It is also capable of both acceptance filtering and message handler and includes 32 Message Objects which can be concatenated to configure FIFO buffer with different depth. The CAN bus controller can internally communicate with the MCU using the SPI interface.

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. However the inclusion of a CAN bus especially opens up a wide range of automotive related applications, such as automotive/motorcycle control and industrial automation control.

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
• Multi-mode operation: FAST, SLOW, IDLE and SLEEP
• Fully integrated internal 8MHz,12MHz and 16MHz oscillators require no external components
• All instructions executed in 1~3 instruction cycles
• Table read instructions
• 115 powerful instructions
• 8-level subroutine nesting
• Bit manipulation instruction

Peripheral Features

• Flash Program Memory: 8K×16
• RAM Data Memory: 512×8
• True EEPROM Memory: 128×8
• Watchdog Timer function
• In Application Programming – IAP
• 26 bidirectional I/O lines
• Two external interrupt lines shared with I/O pins
• Programmable I/O port source current for LED applications
• Multiple Timer Modules for time measure, compare match output, PWM output function or single pulse output function
• Serial Interfaces Module – SIM for SPI or I²C communication
• Fully-duplex Universal Asynchronous Receiver and Transmitter Interface – UART
• Software controlled 22-SCOM/SSEG and 4-SSEG lines LCD driver with 1/3 bias
• 12 external channel 12-bit resolution A/D converter with Programmable Internal Reference Voltage VVR
• Single comparator function
• Dual Time-Base functions for generation of fixed time interrupt signals
• Low Voltage Reset function
• Low Voltage Detect function
• Package types: 48-pin LQFP

CAN Bus Controller Features

• Operating Voltage: 3.0V~5.5V
• Oscillator Type: High Speed External Crystal – HXT
• Sleep Mode and Idle Mode
• 32-byte Write Buffer with Data Check Unit
• Clock Out pin with programmable prescaler
• Interrupt output pins with selectable active level configuration
• Conforms to ISO11898-1 and CAN 2.0A/B
• 32 Message Objects
• Each Message Object has its own identifier mask
• Programmable FIFO mode - concatenation of Message Objects
• Maskable interrupt
• Programmable loop-back mode for self-test operation
• Support the SOF (Start of Frame) signal output
• 32×139-bit Message Memory