The device is a Flash Memory 8-bit high performance RISC architecture microcontroller device with Glucose Meter AFE module that specifically designed for Glucose Meter applications.

For memory features, the Flash Memory offers users the convenience of Flash Memory multiprogramming 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 24-bit Delta Sigma A/D converter, two 12-bit D/A converters and two internal operational amplifiers. 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 and 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 Detect 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 oscillator functions 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.

With regard to Glucose Meter applications, the device has integrated many of the functions required by these products. These include functions such as Internal Reference Voltage generator, Internal LDO, 24-bit Delta Sigma A/D converter, 12-bit D/A Converters, operational amplifiers and LCD driver, etc. The inclusion of flexible I/O programming features, 16-bit Cyclic Redundancy Check function, Time Base functions along with many other features enhance the versatility of the device to suit for Glucose Meter applications.

CPU features:

• operating voltage
  • ♦ fSYS =4MHz: 2.2V~5.5V
  • ♦ fSYS =8MHz: 2.2V~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
• pscillator types
  • ♦ external high speed crystal – HXT
  • ♦ internal high speed 4/8/12MHz 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 1~3 instruction cycles
• table read instructions
• 115 powerful instructions
• 16-level subroutine nesting
• bit manipulation instruction

Peripheral features:

• flash program memory: 32K×16
• data memory: 2048×8
• true EEPROM memory: 2048×8
• in application programming function – IAP
• internal On-Chip Debug Support function – OCDS
• Watchdog Timer function
• 49 bidirectional I/O lines
• 6 external interrupt lines shared with I/O pins
• multiple timer modules for time measure, input capture, compare match output, PWM output function or single pulse output function
• dual time base functions for generation of fixed time interrupt signals
• glucose meter AFE
  • ♦ multi-channel 24-bit resolution Delta Sigma A/D converter
  • ♦ internal LDO
  • ♦ internal reference voltage generator
  • ♦ two 12-bit D/A converters
  • ♦ 2 internal operational amplifiers
  • ♦ bio-impedance analysis Function
• LCD driver function
  • ♦ SEGs×COMs: 36×4, 34×6, 32×8
  • ♦ duty type: 1/4 duty, 1/6 duty or 1/8 duty
  • ♦ bias level: 1/3 bias
  • ♦ bias type: C type
  • ♦ waveform type: type A or type B
• serial interface module – SIM for SPI or I²C interface
• fully-duplex / half-duplex universal asynchronous receiver and transmitter interface – UART
• integrated 16-bit cyclic redundancy check function – CRC
• low voltage reset function
• low voltage detect function
• package type: 80-pin LQFP