HT66F4530/HT66F4540/HT66F4550/HT66F4560

General Information

(HT66F4530 Restricted Products. Notification Date : 2025/04/28 Effective Date : 2025/07/28)
(HT66F4540 Restricted Products. Notification Date : 2025/04/28 Effective Date : 2025/07/28)
(HT66F4560 Restricted Products. Notification Date : 2025/08/19 Effective Date : 2025/11/19)

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.