I’ll audit the part metadata, locate and attach the official Holtek datasheet if needed, then verify the symbol pins and 28-pin SOP footprint against it. I’ll record the detailed findings in a project review file and summarize any mismatches here.
The symbol has all 28 terminals, but every terminal currently has an unspecified pin type and no pin description. I’m now checking the package geometry and authoritative pin table to distinguish metadata gaps from true pinout or footprint errors.
Audit of project metadata, 28-terminal schematic symbol, SOP-28 footprint, pad mapping, pin naming, and pin descriptions for the Holtek HT16K33 LED controller/driver.
Document identity used for comparison: HT16K33, revision V1.10.
The part's Datasheet property was populated during this review. Flux stored the retrieved PDF as a project-hosted asset.
Verification note: Holtek now promotes the later HT16K33A revision on its current product page. The legacy HT16K33 pinout was specifically checked because this project is named for the non-A device.
Audit complete. I attached the official Holtek datasheet and confirmed the 28-pin symbol pinout, pad mapping, 1.27 mm pitch, and SOP-28 mechanical envelope are consistent.
Key issues:
Package property incorrectly says 16-SOP; it should be 28-pin SOP, 300 mil.
All pins have unspecified electrical types and lack descriptions.
HT16K33-28SOP may not be the exact manufacturer ordering code.
Holtek now promotes the HT16K33A; interchangeability and lifecycle require confirmation.