32-bit ARM Cortexâ„¢-M3 MCU
HT32F1251/51B/52/53
3 Overview
Device Information
Most features are common to all devices while the main features distinguishing them are Flash
memory and SRAM memory capacities.
Table 1. HT32F125x Series Features and Peripheral List
Peripherals
Main Flash (KB)
Option Bytes Flash (KB)
SRAM (KB)
HT32F1253
31
1
8
HT32F1252
16
1
4
HT32F1251
8
1
2
HT32F1251B
8
1
2
GPTM
2
RTC
1
WDT
1
USART
1
SPI
1
I2C
1
GPIO
32
30
EXTI
16
12-bit ADC
Number of channels
1
8 Channels
OPA/Comparator
2
CPU frequency
Up to 72 MHz
Operating voltage
2.7 V ~ 3.6 V
Operating temperature
-40 ℃ ~ +85 ℃
Package
LQFP48
Rev. 1.10
14 of 35
April 13, 2012