Keil Logo Arm Logo

Holtek HT32F52231

ARM Cortex-M0+, 40 MHz, 32 kB ROM, 4 kB RAM

Holtek HT32F522xx series - ARM Cortex-M0+ running at 40 MHz - From 16 to 64 Kbytes embedded Flash - From 2 to 8 Kbytes embedded SRAM - Up to 40 I/O lines Peripherals - Timer: RTC, 2 BFTM, 4 SCTM, 1 GPTM, 1 MCTM - Communication: 2 SPI, 2 UART, 1 USART, 2 I2C - Cyclic Redundancy Check(CRC-16/32) - ADC: 12-bit ADC up to 12 channels Packages - 24/28-pin SSOP - 33-pin QFN - 48-pin LQFP

Core ARM Cortex-M0+, 40 MHz
  • Processor:ARM Cortex-M0+, 40 MHz
Memory 4 kB RAM, 32 kB ROM
  • ROM:32 kB
  • RAM:4 kB
Clock & Power 2.00 V .. 3.60 V, 40 MHz
  • External Oscillator:4 MHz 16 MHz External Crystal Oscillator
  • Internal RC:8 MHz Internal RC Oscillator
  • Supply Voltage:2.00 V .. 3.60 V Operating Voltage
  • Power Modes:5 Power Modes: Run,Sleep,Deep-Sleep1,Deep-Sleep2,Power-Down
  • Maximum Clock Frequency:40 MHz
  • RTC:32 kHz
Communication SPI, I2C, UART, USART
  • SPI:2 x SPI
  • I2C:2 x I2C
  • UART:2 x UART
  • USART:1 x USART
Timer/Counter/PWM 2 x 32-bit Timer, 4 x 16-bit Timer, 1 x 16-bit Timer, 1 x 16-bit Timer
  • Watchdog:1 x Watchdog Timer
  • Timer/Counter:2 x 32-bit BFTM
  • Timer/Counter:4 x 16-bit SCTM with single PWM
  • Timer/Counter:1 x 16-bit GPTM with Quadrature Decoder
  • Timer/Counter:1 x 16-bit MCTM with Complementary Outputs
Analog 12-channel 12 bit ADC
  • ADC:12-channel x 12 bit ADC
I/O & Package -40 °C .. 85 °C, 48-QFP, 33-QFN, 24-SOP, 28-SOP
  • Operating Temperature Range:-40 °C .. 85 °C Operating Temperature Range
  • I/Os:40 Inputs/Outputs
  • External Interrupts:16 External Interrupts
  • Package, QFP:48-lead LQFP48
  • Package, SOP:24-lead SSOP24
  • Package, SOP:28-lead SSOP28
  • Package, QFN:33-pad QFN33
Development Tools
CMSIS Drivers No CMSIS-Driver in Device Family Pack.
Keil logo ARM logo
Important information

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies.

Change Settings

Privacy Policy Update

ARM’s Privacy Policy has been updated. By continuing to use our site, you consent to ARM’s Privacy Policy. Please review our Privacy Policy to learn more about our collection, use and transfers
of your data.