Holtek HT66F3185

Holtek  HT66F31850I original Integrated Circuits IC

Description

The device is a Flash Memory type 8-bit high performance RISC architecture microcontroller.

For memory features, the Flash Memory offers users the convenience of multi-programming

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 and a comparator function. Multiple

and extremely flexible Timer Modules provide timing, pulse generation and PWM output functions.

Communication with the outside world is catered for by including fully integrated SPI, I2C, and

UART interface functions, three 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 external and internal low and high 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 inclusion of flexible I/O programming features, Time-Base functions along with many other

features ensure that the device will find excellent use in household appliance products such as coffee

makers, electric kettles, electric tea stoves, rice cookers, soybean milk machines, etc. The device is

also suitable use in small size products, such as smart wearable devices, lithium battery protection

boards, etc.

Features

CPU Features

• Operating Voltage

♦ fSYS=8MHz: 1.8V~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

• Oscillator types

♦ External High Speed Crystal – HXT

♦ Internal High Speed 8/12/16 MHz 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 oscillators require no external components

• All instructions executed in 1~3 instruction cycles

• Table read instructions

• 115 powerful instructions

• 8-level subroutine nesting

• Bit manipulation instruction

Peripheral Features

• Flash Program Memory: 4K×16

• RAM Data Memory: 256×8

• True EEPROM Memory: 128×8

• Watchdog Timer function

• In Application Programming – IAP

• 26 bidirectional I/O lines

• Two external interrupt lines shared with I/O pins

• Programmable I/O port source current for LED applications

• Multiple Timer Modules for time measure, input capture, compare match output, PWM output

function or single pulse output function

• Serial Interfaces Module – SIM for SPI or I2C communication

• Fully-duplex/half-duplex Universal Asynchronous Receiver and Transmitter Interface – UART

• Software controlled 22-SCOM/SSEG and 4-SSEG lines LCD driver with 1/3 bias

• 12 external channel 12-bit resolution A/D converter with Programmable Internal Reference

Voltage VR

• Single comparator function

• Dual Time-Base functions for generation of fixed time interrupt signals

• Low Voltage Reset function

• Low Voltage Detect function

• Package types: 20-pin SOP, 24-pin SOP/SSOP/QFN, 28-pin SOP/SSOP/QFN