The typical RS232 transceiver interface IC found in many embedded systems generates ±6-V line-level signals. While these signals aren’t intended to deliver power, in certain situations it’s possible ...
A PC’s serial port provides signal lines that you can use to read voltage levels of digital circuits. You can use the port to test digital TTL (transistor-to-transistor-logic)-level circuits. You just ...
This application note describes the operation of a general- purpose, microcontroller-based Serial Port Interface (SPI) boot circuit. This is a low cost solution for users who need to modify some of ...
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