Holtek's design focus is in the area of microcontroller development. Holtek's 32-bit series is based on ARM Cortex-M0+ and Cortex-M3 cores. They are also producing 8051 based controllers, but the majority of their 8-bit microcontrollers are based on a core designed in-house. All have common features such as timers, external interrupts, power-down functions, low-voltage reset, bi-directional I/O pins etc. The range of microcontrollers support clock speeds from 32 kHz up to 20 MHz. Device specific features include functions such as EEPROM memory, A/D converters, LCD interfaces, USB interfaces, operational amplifiers. Some of Holtek's 8-bit and 32-bit microcontroller devices:
HT32F51XX ARM M3 core based 32-bit series
HT66F3185/3195/1A5
BS84XX Touch MCU series
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HT32F65XX BLDC Motor control LV / HV solutions
HT66FXX Flash A/D type series
HT68FXX Flash I/O type series
HT95XX Telecom Peripheral series
BS8XXX Touch IC series
BMS MCU
AC-DC / DC-DC
2.4GHZ RF
DALI modules
LDO and Detector
Health care flash MCU (Glucose meter / Blood pressure)
Touch modules / RF modules
Music / Voice MCU
PIR Flash MCU
Wireless charger MCU
CO/Smoke modules
EV charger MCU
GAS / Water meter MCU
LCD drivers for EV / industrial
Holtek develops other devices, most of which could be classified as microcontroller peripheral devices. One area is that of Low Dropout Regulators where Holtek has provided a range of products with low supply currents. Holtek supports traditional products such as remote control and telecommunication devices. Some peripheral products include:
HT7XX Power Management Devices
HT93X/24X Memory Products
HT12X Remote Control Devices
HT16XX Display Drivers
HT9XX Telecom Peripherals
Holtek Semiconductor devices are used in home appliances, computer peripheral equipment, home medical equipment market. The company also provides a design service for customers with specific microcontroller needs. These special microcontroller devices may integrate functions such as smart card interface or medical analog circuitry within the microcontroller.