The GD32 micro-controller of Gigadevices is pin-compatible with the STM32 products by ST Microelectronics. The MCU family is based on a Cortex M3 core by ARM.
The 108-MHz micro-controller by the Chinese company is equipped with a zero wait-state flash memory. The capacity is in maximum 3024 KiB. Additionally, the MCU features up to 96 KiB SRAM. The I/O ports and peripherals are connected to two APB buses. The product offers up to three 12-bit A/D converters, up to ten general-purpose 16-bit timers plus one PWM (pulse-width modulation) timer, as well as some communication interfaces (up to three SPIs, two I2C, five USARTs, one USB 2.0). Furthermore, the MCUs come with two CAN on-chip modules.
The micro-controller operates from 2,6 V to 3,6 V. It is specified for a temperature range of -40 °C to +85 °C. Three power saving modes provide the flexibility for maximum optimization between wake-up latency and power consumption. The Chinese manufacturer claims, that its MCUs are 50 % faster than the market competing products. Code execution efficiency of the same frequency has enhanced 30 % to 40 %. Current consumption of the same frequency has reduced by 20 % to 30 %. These performances provide maximum capability and bandwidth options for various market requirements. The above features make the GD32 MCUs suitable for a range of applications. It is ideal for use in industrial control, user interface, motor drives, power monitor, and alarm systems, consumer and handheld equipment, solar photovoltaic control, touch panel, PC peripherals and so on.
Gigadevice goes west: At the Electronic 2016 tradeshow, the Chinese chipmaker presented its MCU products in Munich (Germany). The company sells the chips for a lower price than the competitor. In order to overcome some rumors, the Chinese company declared that it does not infringe patents and pays it license fees for the ARM processor.
Olimex provides the GD32F103RBT6 prototype board equipped with a GD32 processor. The pin-compatible MCU allows running software and libraries designed for STM32 code. The company also offers evaluation boards with the A20 processor by Allwinner (China), which comes optionally with CAN connectivity.
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