HT32F66446A Datasheet | Holtek Semiconductor

HT32F66446A Datasheet 32-Bit Arm® Cortex®-M0+ BLDC Motor Microcontroller with 36V Half-bridge P/N Gate-Driver, CORDIC and PID Engine, 64 KB Flash and 8 KB SRAM with 2.5 Msps ADC, PGA, CMP, PDMA, DIV, CAN, USART, UART, SPI, I2C, GPTM, MCTM, SCTM, BFTM, CRC, UID, LSTM and WDT Revision: V1.00 Date: August 05, 2025 1 General Description 32-Bit Arm® Cortex®-M0+ BLDC Motor MCU with 36V Half-bridge P/N Gate-Driver, CORDIC and PID Engine HT32F66446A 1 General Description The Holtek HT32F66446A is a high performance, low power consumption 32-bit microcontroller based around an Arm® Cortex®-M0+ processor core. The Cortex®-M0+ is a next-generation processor core which is tightly coupled with Nested Vectored Interrupt Controller (NVIC), Sys Tick timer, and including advanced debug support. The device operates at a frequency of up to 80 MHz with a Flash accelerator to obtain maximum efficiency. The device provides 64 KB of embedded Flash memory for code/data storage and 8 KB of embedded SRAM memory for system operation and application program usage. A variety of peripherals, such as CORIDC, PID, Hardware Divider DIV, ADC, PGA, CMP, I2C, USART, UART, SPI, CAN, BFTM, MCTM, GPTM, SCTM, LSTM, WDT, CRC-16/32, 96-bit Unique ID, PDMA and SW-DP (Serial Wire Debug Port), etc., are also implemented in the device series. Several power saving modes provide the flexibility for maximum optimization between wakeup latency and power consumption, an especially important consideration in low power applications. The device integrates PGA, CMP, DAC and MCTM’s brake functions, which are bined for OCP protection. In order to implement the FOC algorithm, the MCTM can be used to trigger ADC to read PGA output at the same time for detecting real-time phase current information. The device also includes a gate-driver for 3-phase motor driving applications. The gate-driver has several protection functions and provides an integrated 5 V low quiescent current LDO which can provide power supply for...