These devices are Flash Memory type 8-bit high performance RISC architecture microcontrollers. Offering users the convenience of Flash Memory multi-programming features, these devices also include 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 function. Multiple and extremely flexible Timer Modules provide timing, pulse generation, capture input, compare match output, single pulse output and PWM generation functions. Communication with the outside world is managed by including fully integrated SPI and I2C interface functions, two popular interfaces which provide designers with a means of easy communication with external peripheral hardware. Protective features such as an internal Watchdog Timer and Low Voltage Reset coupled with excellent noise immunity and ESD protection ensure that reliable operation ismaintained in hostile electrical environments.

A full choice of internal and external, both low and high speed, 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 SPI, I2C and UART interfaces offer possibilities for 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 devices 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 = 8MHz: 2.2V~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
• Three Oscillators
  • Internal RC -- HIRC
  • Internal 32kHz RC -- LIRC
  • External 32.768kHz Crystal -- LXT
• Fully intergrated internal 8/12/16MHz oscillator requires no external components
• Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
• All instructions executed in one or two instruction cycles
• Table read instructions
• 63 powerful instructions
• Up to 6-level subroutine nesting
• Bit manipulation instruction

Peripheral Features

• Flash Program Memory: 2Kx15/4Kx16
• RAM Data Memory: 96x8/128x8
• True EEPROM Memory: 32x8/64x8
• Watchdog Timer function
• Up to 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, compare match output, capture input, PWM output, single pulse output functions
• Dual Time-Base functions for generation of fixed time interrupt signals
• Multi-channel 12-bit resolution A/D converter
• Serial Interface Module -- SPI or I2C
• Full-duplex Universal Asynchronous Receiver and Transmitter Interface -- UART (HT66F0082 only)
• Programmable I/O port source current for LED driving applications
• Low voltage reset 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
• Wide range of available package types

Specification:

• max. frequency: 16MHz
• VDD: 2.2V~5.5V
• program memory: 2Kx15
• data memory: 96x8
• data EEPROM: 32x8
• stack: 6
• I/O: 22
• timer: 10-bit PTM×4, 10-bit CTMx2
• ADC: 12-bitx8
• interface: SPI/I²C×1
• case: 20SOP