A parallel slave port (PSP) is an interface found on some PIC microcontrollers.^[1] It allows 8-bit asynchronous bidirectional data transfer between the PIC and external devices, such as other microcontrollers or personal computers.^[2]

1. ^ Microchip Parallel Slave Port
2. ^ "Introduction to PIC Microcontrollers". Archived from the original on 2011-10-05. Retrieved 2011-08-30.

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