HOLTEK HT32F52352-64LQFP

This series of MCUs are 32-bit high-performance, low-power microcontrollers based on the Arm Cortex-M0+ processor core. The Cortex-M0+ is a next-generation processor core that tightly integrates the Nested Vectored Interrupt Controller (NVIC), SysTick Timer, and advanced debug support.

This series of MCUs can operate at frequencies up to 48 MHz with the aid of a Flash accelerator for maximum efficiency. It provides 128 KB of embedded Flash memory for program/data storage and 16 KB of embedded SRAM for system operation and application use. This series of MCUs features a wide range of peripherals, including ADC, I2C, USART, UART, SPI, I2S, GPTM, MCTM, SCI, CRC-16/32, RTC, WDT, PDMA, EBI, USB2.0 FS, and SW-DP (Serial Wire Debug Port). Flexible switching between multiple power-saving modes enables significant optimization between wake-up latency and power consumption, a feature that is particularly important in low-power applications.

• Core:
  • 32-bit Arm Cortex-M0+ processor core
  • Up to 48 MHz operating frequency with single-cycle multiplication
  • Integrated NVIC
  • 24-bit SysTick timer
• On-chip Memory:
  • Up to 128 KB on-chip Flash for instruction/data and option bytes storage
  • 16 KB on-chip SRAM
  • Multiple boot modes supported
• Flash Memory Controller – FMC:
  • Flash accelerator for performance enhancement
  • 32-bit word programming with ISP and IAP support
  • Flash protection against unauthorized access
• Reset Control Unit – RSTCU:
  • POR/PDR
  • BOD
  • Programmable LVD
• Clock Control Unit – CKCU:
  • External 4 ~ 16 MHz crystal oscillator
  • External 32,768 Hz crystal oscillator
  • Internal 8 MHz RC oscillator adjustable to ±2% accuracy at 3.3 V operating voltage and 25℃
  • Internal 32 kHz RC oscillator
  • Integrated system clock PLL
  • Independent clock dividers and control bits for peripheral clock sources
• Power Management – PWRCU:
  • Single supply VDD: 2.0 V ~ 3.6 V
  • Integrated 1.5 V LDO regulator for MCU core, peripherals, and memory supply
  • VBAT battery supply for RTC and backup registers
  • Three power domains: VDD, VCORE, and backup
  • Four power-saving modes: Sleep, Deep Sleep 1, Deep Sleep 2, Standby
• External Interrupt/Event Controller – EXTI:
  • Up to 16 EXTI ports with configurable trigger sources and trigger types
  • All GPIO pins selectable as EXTI trigger sources
  • Trigger types: high level, low level, falling edge, rising edge, or both edges
  • Independent interrupt enable, wakeup, and status bit per EXTI port
  • Software interrupt trigger mode per EXTI port
  • Integrated glitch filter for short pulse rejection
• Analog Comparator – CMP:
  • Rail-to-rail comparator
  • Configurable negative input per comparator for flexible voltage selection
  • Dedicated comparator I/O ports and 6-bit scaler for reference voltage generation
  • Programmable hysteresis, response speed, and power consumption
  • Comparator output to I/O port or timer, and as ADC trigger input
  • 6-bit scaler configurable as dedicated reference voltage I/O
  • Comparator can generate interrupt via EXTI controller to wake MCU from Sleep, Deep Sleep 1, or Deep Sleep 2 mode
• I/O Ports – GPIO:
  • Up to 51 GPIO
  • Ports A, B, C, D mapped to 16 EXTI
  • Programmable output drive current on almost all I/O pins
• Motor Control Timer – MCTM:
  • 16-bit up, down, up/down auto-reload counter
  • Up to 4 independent channels
  • 16-bit programmable prescaler with 1 ~ 65536 division ratio for clock source

• Large home appliance application control
• Power supply monitoring
• Alarm systems
• Consumer products
• Handheld devices
• Data logging applications
• Motor control