HT32F52231 LQFP48

Core

Up to 40MHz operating frequency for HT32F52231/52241 or 48MHz for HT32F52331/52341
0.93 DMIPS/MHz (Dhrystone v2.1)
Single-cycle multiplication
Integrated Nested Vectored Interrupt Controller (NVIC)
24-bit SysTick timer

On-chip Memory

Up to 64 KB on-chip Flash memory for instruction/data and option storage
8 KB on-chip SRAM
Supports multiple boot modes

Clock Control Unit — CKCU

External 4 to 16MHz crystal oscillator
External 32,768 Hz crystal oscillator
Internal 8MHz RC oscillator trimmed to ±2 % accuracy at 3.3V operating voltage and 25°C operating temperature
Internal 32 kHz RC oscillator
Integrated system clock PLL
Independent clock divider and gating bits for peripheral clock sources

Power Management — PWRCU

Single VDD power supply: 2.0V to 3.6V
Integrated 1.5V LDO regulator for CPU core, peripherals and memories power supply
VDD power supply for RTC
Two power domains: VDD, 1.5 V
Four power saving modes: Sleep, Deep-Sleep1, Deep-Sleep2, Power-Down

Analog to Digital Converter — ADC

12-bit SAR ADC engine
Up to 1 Msps conversion rate
Up to 12 external analog input channels

I/O Ports — GPIO

Up to 40 GPIOs
Port A, B, C are mapped as 16 external interrupts – EXTI
Almost all I/O pins have a configurable output driving current

Serial Peripheral Interface — SPI

Supports both master and slave mode
Frequency of up to (fPCLK/2) MHz for master mode and (fPCLK/3) MHz for slave mode
FIFO Depth: 8 levels
Multi-master and multi-slave operation

Package and Operation Temperature

24/28-pin SSOP, 33-pin QFN, 48-pin LQFP for HT32F52231/52241
33-pin QFN, 48-pin LQFP package for HT32F52331/52341
Operation temperature range: -40°C to +85°C