GD32H757ZMT7 datasheet(67/151 Pages) GIGADEVICE

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GD32H757xx Datasheet

The trigger selection controller (TRIGSEL) allows software to select the trigger input signal

for various peripherals. TRIGSEL provides a flexible mechanism for a peripheral to select

different trigger inputs.

It’s up to 4 trigger selection outputs could be selected for each

peripheral. And every output could select from different trigger input signal.

3.8.

General-purpose and alternate-function I/Os (GPIO and AFIO)



Up to 135 fast GPIOs, all mappable on 16 external interrupt lines, each pin weak pull-

up/pull-down function.



Output push-pull/open drain enable control.



Analog input/output configuration.



Alternate function input/output configuration.

GD32H757xx is up to 112 general purpose I/O pins (GPIO), named PA0~PA10, PA13~PA15,

PB0~PB15, PC0~PC15, PD0~PD15, PE0~PE15, PF0~PF15, PG0~PG15, PH0~PH1 for the

device to implement logic input/output functions. Each GPIO port has related control and

configuration registers to satisfy the requirements of specific applications. The external

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

the Interrupt/Event Controller Unit (EXTI). The GPIO ports are pin-shared with other

alternative functions (AFs) to obtain maximum flexibility on the package pins.

Each of the GPIO pins can be configured by software as output (push-pull or open-drain),

input, peripheral alternate function or analog mode. Most of the GPIO pins are shared with

digital or analog alternate functions. All GPIOs are high-current capable except for analog

mode.

3.9.

CRC calculation unit (CRC)



Supports 7/8/16/32 bit data input.



For 7(8)/16/32 bit input data length, the calculation cycles are 1/2/4 AHB clock cycles.



User configurable polynomial value and size.



Free 8-bit register is unrelated to calculation and can be used for any other goals by any

other peripheral devices.

A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital

networks and storage devices to detect accidental changes to raw data. The CRC calculation

unit can be used to calculate 7/8/16/32 bit CRC code within user configurable polynomial

3.10.

True random number generator (TRNG)



LFSR mode and NIST mode to generate random number (National Institute of Standards

and Technology) mode to generate random number.



About 40 periods of TRNG_CLK are needed between two consecutive random numbers

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