This series of devices are Flash Memory A/D 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 flexible 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, a 16-bit Voice D/A converter, dual comparators, dual operational amplifiers and three 8-bit multi-channel D/A converter. With regard to internal timers, these devices include multiple and extremely flexible Timer Modules providing functions for timing, pulse generation and PWM generation operations. Communication with the outside world is catered for by the inclusion of fully integrated SPI, I2C and UART interfaces functions, 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 various internal and external high and low oscillators are provided including a fully integrated system oscillator which requires 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 fully integrated LCD driver and Time-Base functions along with many other features ensure that these devices will find excellent use in applications such as smoke detectors, electronic metering, environmental monitoring, handheld instruments, household appliances, electronically controlled tools, motor driving in addition to many others.

CPU Features

• Operating Voltage:
  • fSYS =4MHz: 2.2V~5.5V
  • fSYS =8MHz: 2.2V~5.5V
  • fSYS =12MHz: 2.7V~5.5V
• Up to 0.33μs instruction cycle with 12MHz 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 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 2MHz, 4MHz and 8MHz oscillator requires no external components
• All instructions executed in 1~3 instruction cycles
• Table read instructions
• 115 powerful instructions
• Up to 16-level subroutine nesting
• Bit manipulation instruction

Peripheral Features

• Program Memory: 2K×16~16K×16
• Data Memory: 128×8~512×8
• True EEPROM Memory: 32×8~128×8
• Watchdog Timer function
• Up to 46 bidirectional I/O lines
• Two external interrupt lines shared with I/O pins
• Two operational amplifiers, two comparators and three 8-bit D/A converters
• Software controlled 4-SCOM lines LCD driver with 1/2 bias – HT66F4540/50/60
• Multiple Timer Modules for time measure, input capture, compare match output, PWM output or single pulse output function
• Dual Time-Base functions for generation of fixed time interrupt signals
• Serial Interface Module - SPI or I2C
• UART Interface for fully duplex asynchronous communication – HT66F4540/50/60
• Up to 8 channel 12-bit resolution A/D converter
• High performance 16-bit Voice D/A converter – HT66F4550/60
• Low voltage reset function
• Low voltage detect function
• Wide range of available package types

Specification:

• max. frequency: 12MHz
• VDD: 2.2V~5.5V
• program memory: 8Kx16
• data memory: 384x8
• data EEPROM: 64x8
• stack: 8
• I/O: 26
• timer: 10-bit STMx2, 10-bit PTM×2
• ADC: 12-bitx8
• DAC: 8-bitx3
• Voice DAC: 16-bitx1
• interface: SPI/I²C×1, UART×1
• case: 28SSOP