{{tag>collection_az vendor_hynix type_memory type_memory/flash type_memory/flash/nand year_unknown foundry_unknown tech_unknown}}

256Mbit (32Mx8bit / 16Mx16bit) NAND Flash Memory

Decoding the part number suggests that the device is SLC, single die, 3.3V supply, 32Mx8.

Datasheet first rev is 2003 so die design is probably about this age too. 90 nm ish? No deprocessing performed so not sure of exact node. Date code on the package is 2005 week 7.

====== Package ======

Markings:

    hynix KOR
    HY27US08561M
    TPEB 507B
    
    M9RB1508?
    
Last line is in a different font and last character is unreadable. Firmware revision code maybe?

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====== Die ======

Size is large (not measured, full images not acquired yet)

Overview of bottom part of die

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Closeup of die ID markings

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Various parts of memory array (images do not overlap)

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Various closeups

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Random logic at bottom center of chip. Lots of CMP filler (?)

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