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azonenberg:microchip:23k256 [2014/04/08 07:13] azonenberg created |
azonenberg:microchip:23k256 [2015/01/04 22:50] (current) |
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- | SPI serial SRAM chip. Looks like 4 metal layers and a fairly fine process geometry. CMP filler pattern is consistent with UMC 180 nm (pitch and dimensions of CMP filler and traces on both M4 and M3 match [[azonenberg: | + | SPI serial SRAM chip. Looks like 4 metal layers and a fairly fine process geometry. |
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+ | Definitely //not// one of Microchip' | ||
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+ | The die ID also does not match the normal Microchip layout and there is no Microchip logo on the die. Maybe this mask set was acquired from a buyout or something? | ||
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+ | There are three unbonded pads on the die. Purpose of these is unknown at this time since all known packages are 8 pins. | ||
====== Package ====== | ====== Package ====== |