HT68F03M/HT68F04M/HT66F03M/HT66F04M -- 
1.5V Battery Flash Type 8-Bit MCU with EEPROM & DC-DC Converter

General Description

This series of 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, among which is their internal DC-DC Converter allowing low voltage operation. In addition to their Flash Program Memory there is also area of RAM Data Memory and an area of 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 comparator functions. Multiple and extremely flexible Timer Modules provide timing, pulse generation and PWM generation functions. 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.

An extensive choice of oscillator functions is 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 devices also include flexible I/O programming features Time-Base functions and a range of other features.

The internal PFM type step-up DC-DC Converter allows the MCU to be powered from low voltage sources, and has the advantages of high efficiency and low ripple. With a fixed and accurate 3.0V output voltage and extremely low 0.7V start-up voltage, these MCU devices will be especially suitable for battery-powered applications, portable handheld equipment etc.

Features

MCU Features

  • Operating voltage: 3.0V (typ.)
  • Power down and wake-up functions to reduce power consumption
  • Five oscillators:
    External High Speed Xtal
    External 32.768kHz Xtal
    External RC
    Internal High Speed -- no ext. components
    Internal 32kHz -- no ext. components
  • Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
  • Fully integrated internal 4MHz, 8MHz and 12MHz
  • All instructions executed in one or two instruction cycles
  • Table read instructions
  • 63 powerful instructions
  • Up to 8 subroutine nesting levels
  • Bit manipulation instruction
  • Flash Program Memory: 1Kx14 ~ 2Kx15
  • RAM Data Memory: 64x8 ~ 96x8
  • EEPROM Memory: 64x8
  • Watchdog Timer function
  • Up to 8 bidirectional I/O lines
  • External interrupt line shared with I/O pin
  • Multiple Timer Module for time measure, input capture, compare match output, PWM output or single pulse output functions
  • Comparator function
  • Dual Time-Base functions for generation of fixed time interrupt signal
  • Low voltage reset function
  • Low voltage detect function
  • Multi-channel 12-bit resolution A/D converter

DC-DC converter Features

  • 3.0V ± 2.5% output voltage
  • 0.7V start-up voltage
  • Output current up to 100mA
  • High efficiency: 85% (typ.) at VOUT=3V

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