HT32F52230 datasheet(9/39 Pages) HOLTEK

9 / 39 page

Rev. 1.21

9 of 39

April 11, 2017

32-Bit ARM® Cortex™-M0+ MCU

HT32F52220/HT32F52230

External Interrupt/Event Controller – EXTI

■

Up to 16 EXTI lines with configurable trigger source and type

■

All GPIO pins can be selected as EXTI trigger source

■

Source trigger type includes high level, low level, negative edge, positive edge, or both edge

■

Individual interrupt enable, wakeup enable and status bits for each EXTI line

■

Software interrupt trigger mode for each EXTI line

■

Integrated deglitch filter for short pulse blocking

The External Interrupt/Event Controller, EXTI, comprises 16 edge detectors which can generate

a wake-up event or interrupt requests independently. Each EXTI line can also be masked

independently.

Analog to Digital Converter – ADC

■

12-bit SAR ADC engine

■

Up to 1 Msps conversion rate

■

Up to 8 external analog input channels

A 12-bit multi-channel ADC is integrated in the device. There are multiplexed channels, which

include 8 external analog signal channels and 2 internal channels which can be measured. If the

input voltage is required to remain within a specific threshold window, an Analog Watchdog

function will monitor and detect these signals. An interrupt will then be generated to inform the

device that the input voltage is not within the preset threshold levels. There are three conversion

modes to convert an analog signal to digital data. The ADC can be operated in one shot, continuous

and discontinuous conversion modes.

I/O Ports – GPIO

■

Up to 23 GPIOs

■

Port A, B are mapped as 16 external interrupts – EXTI

■

Almost all I/O pins have a configurable output driving current.

There are up to 23 General Purpose I/O pins, GPIO, named Port A and Port B for the

implementation of logic input/output functions. Each of the GPIO ports has a series of related

control and configuration registers to maximize flexibility and to meet the requirements of a wide

range of applications.

The GPIO ports are pin-shared with other alternative functions to obtain maximum functional

flexibility on the package pins. The GPIO pins can be used as alternative functional pins by

configuring the corresponding registers regardless of the input or output pins. The external

interrupts on the GPIO pins of the device have related control and configuration registers in the

External Interrupt Control Unit, EXTI.

HT32F52230 Datasheet(PDF) 9 Page - Holtek Semiconductor Inc

HT32F52230 Datasheet(HTML) 9 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Datasheet Download

Link URL