Holtek Introduces New Arm Cortex MCU Series

Holtek has announced the release of its new generation Arm Cortex-M0+ Brushless DC Motor Microcontroller devices, the HT32F65230/HT32F65240 series.

These new devices support Hall Sensors or Sensor-less Field Oriented Control (FOC), have an operating frequency of up to 60MHz and a wide operating voltage range of 2.5V~5.5V. When the system voltage is 5V, they can offer higher analog signal resolution and less noise interference when driving motors.

Together with their high efficiency, excellent price/performance ratio and high level of functional integration, these devices are especially suitable for a wide range of applications which require FOC control BLDC motors, such as electric scooters, kitchen ventilators, ceiling fans, dust-free room Fan Filter Units and various fans, etc.

The HT32F65230/HT32F65240 devices contain 32K/64K bytes of Flash Program Memory and 4K/8K bytes of SRAM Data Memory.

With regard to Hall Sensors or Sensor-less FOC control, these devices include three rail-to-rail voltage comparators, two rail-to-rail voltage amplifiers, two 10-channel 1Msps SAR A/D converters, powerful MCTM, GPTM, hardware divider and other peripheral functions. Additionally, there are a range of communication interfaces including UART, USART, I2C and SPI, which can be combined with the 6-channel PDMA and CRC16/32 to improve communication security.

The devices are supplied in a 48-pin LQFP package type and contain up to 40 GPIO pins. Holtek also provides a BLDC Workshop to reduce the product development and evaluation time for products with Hall Sensors or Sensor-less FOC control.

The BLDC Workshop contains multiple features including providing a means to optimise parameters to generate a project for users’ secondary development, real-time control to adjust various parameters in real time and a real-time graphical display to allow user adjustment without the need for an oscilloscope.

The BLDC Workshop hardware is also available for users to select according to their actual requirements. The entire series is presently undergoing IEC/UL 60730-1 motor control software safety certification. After this certification has been achieved customers will be able to quickly obtain product IEC/UL 60730-1 software certification.

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