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Home > Products > Holtek MCUs > 8-bit(Flash)MCU

Holtek MCU HT66F302-HT66F303

The devices are a Flash Memory type 8-bit high performance RISC architecture microcontroller. Offering users the convenience of Flash Memory multi-programming features, The devices also includes a wide range of functions and features.

General Description

The devices are a Flash Memory type 8-bit high performance RISC architecture microcontroller.  Offering users the convenience of Flash Memory multi-programming features, The devices also  includes 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 and  PWM generation functions. Protective features such as an internal Watchdog Timer, Low Voltage  Reset coupled with excellent noise immunity and ESD protection ensure that reliable operation is  maintained in hostile electrical environments.

A full choice of internal oscillator functions are provided including a fully integrated system  oscillator which requires no external components for its implementation.

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.

Product Features

  • CPU Features

    • Operating Voltage

    ♦ fSYS=4MHz: 1.8V~5.5V

    ♦ fSYS=8MHz: 1.8V~5.5V

    • Up to 0.5μs instruction cycle with 8MHz system clock at VDD=5V

    • Power down and wake-up functions to reduce power consumption

    • Two Oscillators

    ♦ Internal RC – HIRC

    ♦ Internal 32kHz – LIRC

    • Fully intergrated internal 4/8MHz 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

    • 61 powerful instructions

    • Up to 2-level subroutine nesting

    • Bit manipulation instruction

  • Peripheral Features

    • Flash Program Memory: 1K×14

    • RAM Data Memory: 64×8

    • True EEPROM Memory: 32×8

    • Watchdog Timer function

    • Up to 14 bidirectional I/O lines

    • One pin-shared external interrupt

    • 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

    • 4-channel 12-bit resolution A/D converter

    • Low voltage reset function

    • Package types

    ♦ HT66F303: 16-pin NSOP

    ♦ HT66F302: 8-pin SOP, 10-pin SOP

Block Diagram

Holtek MCU HT68F0017


Pin Assignment

Holtek MCU HT68F0017


Pin Description

Holtek MCU HT68F0017


How to Order

You can get your Holtek MCU HT66F302-HT66F303 solution by flling out the form below and we will contact you immediately.

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