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Unknown 16-pin bare die found in my lab while imaging backlog. No idea of function, vendor, or original markings.

Preliminary analysis:

  • 1-metal 1-poly CMOS process
  • Large “herringbone” structures are pad drivers
  • Pad with trimmed corners is #1
  • Pad above it is #16, Vdd
  • Pad second from bottom on right is #8, Vss
  • Inner ring is Vss
  • Outer ring is Vdd
  • Best guess so far is loadable 4-bit up/down counter, maybe 74HC or CD4000 series

azonenberg/unknown/lc627b.txt · Last modified: 2015/01/04 17:50 (external edit)