Rev. 1.51

2 of 50

April 11, 2017

HT32F52231/HT32F52241/HT32F52331/HT32F52341

Table of Contents

1 General Description................................................................................................ 6

2 Features................................................................................................................... 7

Core ....................................................................................................................................... 7

On-chip Memory .................................................................................................................... 7

Flash Memory Controller – FMC............................................................................................ 7

Reset Control Unit – RSTCU ................................................................................................. 8

Clock Control Unit – CKCU.................................................................................................... 8

Power Management – PWRCU ............................................................................................. 8

External Interrupt/Event Controller – EXTI ............................................................................ 9

Analog to Digital Converter – ADC ........................................................................................ 9

I/O Ports – GPIO.................................................................................................................... 9

Motor Control Timer – MCTM .............................................................................................. 10

PWM Generation and Capture Timers – GPTM .................................................................. 10

Single Channel Generation and Capture Timers – SCTM................................................... 11

Basic Function Timer – BFTM ............................................................................................. 11

Watchdog Timer – WDT....................................................................................................... 11

Real Time Clock – RTC ....................................................................................................... 12

Inter-integrated Circuit – I2C ................................................................................................ 12

Serial Peripheral Interface – SPI ......................................................................................... 12

Universal Synchronous Asynchronous Receiver Transmitter – USART.............................. 13

Universal Asynchronous Receiver Transmitter – UART ...................................................... 13

Smart Card Interface – SCI (HT32F52331/52341 only) ...................................................... 14

Cyclic Redundancy Check – CRC ....................................................................................... 14

Universal Serial Bus Device Controller – USB (HT32F52331/52341 only) ......................... 15

Debug Support..................................................................................................................... 15

Package and Operation Temperature.................................................................................. 15

3 Overview................................................................................................................ 16

Device Information............................................................................................................... 16

Block Diagram ..................................................................................................................... 17

Memory Map........................................................................................................................ 18

Clock Structure .................................................................................................................... 21

4 Pin Assignment..................................................................................................... 22