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As the first product series of the GD32 MCU family based on the Cortex®-M23 core, the  GD32E230 series  MCU adopts the industry-leading 55nm low-power process technology, focusing on ultra-low development budget requirements, to replace and improve traditional 8-bit and 16-bit product solutions, and cross the Cortex-M0/M0+ threshold, directly entering the new generation of 32-bit Cortex®-M23 core development to bring a one-step entry experience. The bulk order price of the basic model of the GD32E230 series is as low as 20 cents, thus leading the comprehensive popularization of the Cortex®-M23 core in the industry with unparalleled value-for-money features. The  GD32E230 series  MCU offers 18 product models, including 6 package types such as LQFP48, LQFP32, QFN32, QFN28, TSSOP20 and QFN20. The chip area ranges from 7x7mm to 3x3mm, and it continues to easily cope with the challenges of rapidly developing intelligent applications with unprecedented design flexibility a...

  RS-485 is a half-duplex communication interface that uses differential signals for transmission, also known as TIA-485-A, ANSI/TIA/EIA-485 or TIA/EIA-485. Because it is half-duplex, in the usual use of 485 communication, it is necessary to switch the sending or receiving function. The conventional method is to use the RE pin and DE pin (see Figure 1) to switch the receiving data and sending data through the program, but it is more troublesome to write the program and it is more difficult to debug. In order to facilitate the debugging of the code, many engineers build additional circuits on the periphery of the chip to realize the automatic switching of the receiving and sending data functions, but this increases the circuit board area and workload.     COS13487EESA  of Cosine nanoelectronics is an RS-485 transceiver with integrated automatic direction selection control function (see Figure 2). In addition, it has hot-swap function, which can eliminate fault transie...