driving capability

Application of Pull-Up Resistors in Microcontrollers and Principles for Value Selection

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Application of Pull-Up Resistors in Microcontrollers and Principles for Value Selection

Principles of Pull-Up Resistor Application1. When a TTL circuit drives a CMOS circuit, if the high level output from the TTL circuit is lower than the minimum high level of the CMOS circuit (generally 3.5V), a pull-up resistor is needed at the TTL output to increase the high level output value. ……………………….2. An OC gate … Read more

Understanding the Driving Capability of MCU’s SPI Interface and GPIO: How Many Slave Devices Can SPI Connect?

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Understanding the Driving Capability of MCU's SPI Interface and GPIO: How Many Slave Devices Can SPI Connect?

Friends involved in hardware design should be familiar with the SPI interface and the GPIO ports of MCUs, and many have personally designed SPI interfaces. When designing, did you consider this important parameter? — The driving capability of the SPI interface and ordinary GPIO ports. Today, let’s discuss how to evaluate the driving capability of … Read more