Covering the 25AA320, 25LC320 and 25C320, this 383 KB PDF is listed as a schematic but is in practice the datasheet for a Microchip family of 32 Kbit SPI serial EEPROMs. The suffix variants differ mainly in supported supply voltage range, which the document details alongside pinout, instruction set and timing. It helps when identifying a small 8-pin memory on a board, selecting the correct chip in programmer software, or tracing the SPI lines between the EEPROM and its controller. Read and save the existing data first.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.