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Holtek – Application specific MCUs (Cortex-M)

Creative Ideas – Infinite Possibilities

Technical supports of performance, price and profession for accelerated product design and development.

The Holtek HT32 Cortex®-families will find applications in a wide variety of products, in areas such as IoT terminal devices, USB gaming peripherals, fingerprint recognition products, TFT-LCD displays, three-phase motor control, industrial control, home automation products, health care products, consumer electronics and so on. These devices provide users with a high level of functional integration and innovation advantages, implementing a superior product combination of performance, price and profession.

Combining standard Cortex®-M cores running at 20 to 96MHz with high performance peripherals support the development specifications.

Anwendungsspezifische MCUs (Cortex-M)

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Holtek’s HT32F65230/HT32F65240 combine  an ARM® M0+ core with advanced analogue features like Comparators, Operation Amplifiers and ADC. The dedicated Motor Control Timer make it suitable for BLDC applications. Holtek offers a BLDC Motor Workshop which includes dedicated BLDC Evaluation Boards, FOC Algorithm Library and a PC Software.

Further interesting features

  • Up to 60MHz
  • 32/64KB Flash
  • 4/8KB SR
  • 6ch PDMA)
  • 2x 1MSPS 12-bit SAR ADC
  • 2x Rail-to-Rail Op Amp
  • 3x Rail-to-Rail Comparator
  • 1x 16-bit Motor Control Timer with programmable dead-time insertion
  • Complementary PWM for 3-phase Motor Control or inverter applications
  • Supply Voltage: 2.5V-5.5V

24Bit ADC

Holtek’s HT32F59041 brings as its unique Feature a 24-bit Delta Sigma A/D Converter with internal PGA. By this sensing applications and other functions with the need for a very high resolution ADC can be covered perfectly.

Further interesting features

  • 32-bit Arm® Cortex®-M0+ processor core
  • (Up to 20MHz)
  • (64KB Flash / 8KB SRAM)
  • 1x 1MSPS 12-bit SAR ADC
  • 1x 24-bit Delta Sigma ADC
  • 1x 16-bit Motor Control Timer with programmable dead-time insertion
  • Complementary PWM
  • Supply Voltage: 2.5V-5.5V


Music Synthesizer

Holtek’s HT32F61357 is the full featured member of the Music Synthesizer series. Its ARM® M0+ core runs at 48MHz and is supported by the integrated wave table synthesis function with 32 parallel channels with a MIDI engine for control. The Wave Table synthesis waveform data including instrument tone, MIDI scores, voice, sound effect, etc., are stored in the internal SPI Flash Data Memory (128Mbit). For an easy start Holtek offers a workshop with evaluation board and PC software for MIDI configuration and sound handling and tuning.

Sound Systhesis Features

Parallel Sounds 32
Digital Volume Control 10 bit
Output Sampling Frequency up to 50kHz
Waveform Data Length 8, 12, 16 Bit

Additional MCU features

  • 1x I2S
  • 1x 1MSPS 12-bit SAR ADC
  • 2x 16bit DAC
  • USB 2.0 full speed
  • 16x External Event control lines
  • Supply Voltage: 2.0V-3.6V


5V (with USB)

Holtek’s HT32F50343 brings USB 2.0 full speed capabilities for 5V designs based on an ARM® M0+ core. It provides 64 KB of embedded Flash memory for code/data storage and 12 KB of embedded SRAM memory for system operation and application program usage. A variety of peripherals, such as Hardware Divider DIV, PDMA, ADC, GPTM, PWM, SCTM, BFTM, CRC-16/32, RTC, WDT are also implemented in the device.

Further interesting features

  • 2.5V to 5.5V operational voltage
  • 1x 1MSPS 12 Bit SAR ADC
  • Fully integrated USB full-speed transceiver (USB 2.0 Full-Speed (12 Mbps))
  • Serial LED interface


Holtek’s HT32F57352 provides 128 KB of embedded Flash memory for code/data storage and up to 16 KB of embedded SRAM memory for system operation and application program usage. The Cortex® M0+ core is running on 60MHz.

A variety of peripherals, such as USB2.0 FS, PDMA, AES-128, Hardware Divider DIV, CRC-16/32, RTC, WDT, ADC, CMP, DAC, LCD etc., are also implemented in the devices.

Further interesting features

  • LCD Controller (8×33/6×35/4×37 COMxSEG) with features like: embedded LCD bias reference resistor ladders, double buffered memory, selectable charge pump voltage, programmable dead time between frames, 2 selectable waveforms, frame interrupt, blink functions
  • SRAM options from 4KB up to 16KB
  • Full speed USB 2.0 (12Mbps)
  • AES-128 Engine (4 word initial vector for CBC and CTR mode, 2×32 bits AES data buffer, word data swap)
  • Supply Voltage: 1.65V to 3.6V



Holtek‘s HT32F22366 is a high performance, low power consumption 32-bit microcontroller based around an Arm® Cortex®-M3 processor core running up to 96MHz.

A variety of peripherals, such as CRC-16/32, AES-128/256, USB2.0 FS, SDIO, EBI and Smart Card can be found around its CMOS Sensor Interface (CSIF):

  • Up to 2048 × 2048 input resolution
  • Supports 8-bit YUV422 and Raw RGB formats
  • Up to (fHCLK/3) MHz input pixel clock frequency
  • Multi VSYNC and HSYNC settings for image capture
  • Hardware window capture function
  • Fractional hardware sub-sample function
  • Dual FIFOs each with a capacity of 8 x 32 bits which can be read by the PDMA or CPU

Several power saving modes provide the flexibility for maximum optimization between wakeup latency and power consumption, an especially important consideration in low power applications.

Further interesting features

  • 1x 1MSPS 12 Bit SAR ADC
  • Motor Control Timer
  • Inter-IC Sound I2S
  • Power Management (3 power domains (VDD/1.5V/Backup), 4 Power Down modes, VBAT für RTC and backup registers)
  • Supply Voltage: 2.0V-3.6V


Holtek’s 32-Bit MCU Tools

To push the success of their 32-bit Microcontrollers, Holtek provides an extensive set of high quality development tools. This includes Software Tools as well as Hardware Tools.

Anwendungsspezifische MCUs (Cortex-M) Tools

For more details on tools check our docs page here or get in contact with us directly

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