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   HT32F125x series of Holtek microcontroller is a based on ARM ? Cortex ?-M3 processor kernel 32 bits of high performance low power consumption MCU. Cortex ?-M3 is the nested vector interrupt controller (NVIC), system beats Timer (SysTick Timer) and advanced debugging support tightly together in a new generation of processor core.

  HT32F125x microcontroller can work with Flash accelerator in up to 72 MHz frequency, in order to get the maximum efficiency. It provides 32 KB embedded Flash memory used for program/data storage, 8 KB of memory used as SRAM embedded operating system and applications use. This series microcontroller has a variety of peripherals, such as ADC, the I2C, USART, SPI, SW-DP (serial line debug port), etc.In the wake of delay and power consumption, several province electricity mode provides flexible biggest optimization scheme, the move in low power consumption application is particularly worth considering.
 

   These characteristics make HT32F125x microcontroller can be widely used in various applications, such as large household appliances and application control, power monitoring and alarm systems, consumer areas and handheld devices, data record applications.

characteristics

core

32-bit ARM ? Cortex ?-M3 processor core
Up to 72 MHz work frequency
1.25 DMIPS/MHz (Dhrystone 2.1)
Single cycle multiplication and hardware division
Integrated nested vector interrupt controller (NVIC)
24 bits SysTick timer
Internal bus matrix connection instruction code for the bus, data code bus, the system bus, special peripherals bus (PPB) and debugging access (AHB-AP)
 

Chip memory

9 to 32 KB of Flash memory used for instructions on data and the option's storage /
2 to 8 KB chip SRAM
Support for multiple start-up mode
Flash memory controller

Flash accelerator for maximum efficiency
32 bit word programming (ISP and IAP)
Flash protection function, prevent unauthorized access
Reset the control unit

On the return (POR)
Owe pressure detector (BOD)
Programmable low pressure testing (LVD)

Clock control unit

External 4 ~ 16 MHz crystals
External 32.768 kHz crystals
In the working voltage of 3.3 V, working temperature of 25 ℃, internal 8 MHz RC oscillator precision can be adjusted from 1% to
Internal 32 kHz RC oscillator
Integrated system clock PLL
Used as a source of the independent peripheral clock clock door point guard
 

Power management

Use 3.3 V single power: 2.7 V to 3.6 V
Integrated 1.8 V LDO regulators used as the kernel and peripherals power supply
VBAT battery power supply to the RTC and spare registers
Three power domain: 3.3 V, 1.8 V and set aside
Four province electricity mode: sleep mode, depth sleep mode 1, depth sleep mode 2, suspend mode
 

Analog to digital converter

12 a SAR ADC starter
1 Msps conversion rate under 1 μ s 56 MHz, and in the 72 MHz down 1.17 u s
Eight external analog input channel
The power supply voltage range: 2.7 V to 3.6 V
Conversion range: VSSA ~ VDDA
 

Analog amplifier/comparator

Two operational amplifier or two comparator functions by software configuration
The power supply voltage range: 2.7 V to 3.6 V
I/O mouth

32 general input/output (GPIO)
Port A and port B for 16 external interruption mapping (EXTI)
In addition to the analog input and common pin outside, almost all the I/O pins are 5 V tolerance
PWM produce and capture the timer

2 a 16 bit general timer (GPTM)
Each GPTM has 4 channels PWM compare the output and input catch
External trigger input
 

The watchdog timer

With three YuFen 12 of the frequency of an the down counter
Interrupt or reset system events
Programmable the watchdog timer window function
Write protect function
Real time clock

Programmable frequency of an YuFen 32-bit up counter
Alarm function
Interrupt and sensei events
 

Inside integrated circuits (the I2C)

Support 400 kHz frequencies master-slave mode
Provide arbitration function
Support seven and 10 addressing modes and general call addressing
Serial peripherals interface (SPI)

High frequency of 18 MHz SPI interface
Support master-slave mode
FIFO depth: 8 class
Several hosts and more from machine model
 

General synchronous asynchronous transceiver (USART)

Working frequency: 4.5 MHz
At the same time support asynchronous and synchronous clock serial communication mode
IrDA SIR encoder and decoder
With output that can control the RS485 mode
The modem function
FIFO depth: 16 × 9 receiver and transmitter
 

Debugging support

Serial line debug port-SW-DP
Six instructions comparator and 2 for hardware breakpoint or code/text repair of text comparator
4 for hardware observation points comparator
A asynchronous tracking-TRACESWO
Packaging and working temperature

48-pin LQFP packaging
Working temperature:-40˚C  to + 85˚C