General Description

The Holtek HT32F1755/1765/2755 devices are high performance and low power consumption 32-bit

microcontrollers based around an ARM® Cortex™-M3 processor core. The Cortex™-M3 is a next-generation processor core which is tightly coupled with Nested Vectored Interrupt Controller (NVIC), SysTick timer, and including advanced debug support.

Features

Core

▀ 32-bit ARM® Cortex™-M3 processor core

▀ Up to 72MHz operation frequency

▀ 1.25 DMIPS/MHz (Dhrystone 2.1)

▀ Single-cycle multiplication and hardware division

▀ Integrated Nested Vectored Interrupt Controller (NVIC)

▀ 24-bit SysTick timer

On-chip Memory

▀ 128KBon-chip Flash memory for instruction/data and options storage

▀ up to 64KBon-chip SRAM

▀ Supports multiple boot modes

Flash Memory Controller

▀ Flash accelerator formaximum efficiency

▀ 32-bit word programming with In System Programming Interface (ISP) and In Application Programming (IAP)

▀ Flash protection capability to prevent illegal access

Reset Control Unit

▀ Supply supervisor:

● Power-on Reset – POR

● Brown-out Detector – BOD

● Programmable Low Voltage Detector – LVD

Clock Control Unit

▀ External 4 to 16MHz crystal oscillator

▀ External 32,768Hz crystal oscillator

▀ Internal 8MHz RC oscillator trimmed to ±2 accuracy at 3.3V operating voltage and 25°C operating temperature

▀ Internal 32kHz RC oscillator

▀ Integrated system clock PLL

▀ Independent clock gating bits for peripheral clock sources

Power Management

▀ Single 3.3V power supply: 2.7V to 3.6V

▀ Integrated 1.8V LDO regulator for core and peripheral power supply

▀ VBATbattery power supply for RTC and backup registers

▀ Three power domains: 3.3V, 1.8V and Backup

▀ Four power saving modes: Sleep, Deep-Sleep1, Deep-Sleep2, Power-Down

Analog to Digital Converter

▀ 12-bit SAR ADC engine

▀ Up to 1Msps conversion rate – 1μs at 56MHz, 1.17μs at 72MHz

▀ 8 external analog input channels

▀ Supply voltage range: 2.7V ~ 3.6V

▀ Conversion range: VREF+~ VREF

Analog Operational Amplifier/Comparator

▀ Two Operational Amplifiers or Comparator functions which are software configurable

▀ Supply voltage range: 2.7V ~ 3.6V

I/O Ports

▀ Up to 80 GPIOs

▀ Port A, B, C, D, E are mapped as 16 external interrupts – EXTI

▀ Almost all I/O pins are 5V-tolerant except for pins shared with analog inputs

PWM Generation and Capture Timers – GPTM

▀ Two 16-bit General-Purpose Timers – GPTM

▀ Up to 4-channel PWM Compare Output or Input Capture function for each GPTM

▀ External trigger input