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PST529 voltage supervisor, in region A3 of the jwdonal schematic

The PST529 serves as the SNES' voltage supervisor. It is labeled "RESET IC" in the block diagram in the official Nintendo documentation. [1]

See Also


  1. Figure 2-22-1, "Super NES Functional Block Diagram" on page 2-22-2 of Book I
  2. datasheet: https://datasheetspdf.com/pdf-file/515960/MitsumiElectric/PST529/1