[[azonenberg:microchip:23k256]]
 
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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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 {{tag>collection_az vendor_microchip year_2006 type_memory type_memory/sram foundry_umc tech_180nm}} {{tag>collection_az vendor_microchip year_2006 type_memory type_memory/sram foundry_umc tech_180nm}}
  
-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:xilinx:xc2c32a]] within 3%)+SPI serial SRAM chip. Looks like 4 metal layers and a fairly fine process geometry. 
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 +Definitely //not// one of Microchip's standard fab processes. CMP filler pattern is consistent with UMC 180 nm (pitch and dimensions of CMP filler and traces on both M4 and M3 match [[azonenberg:xilinx:xc2c32a]] within 3%) however this is the only evidence we have to support this conclusion at this time; tag is tentative. 
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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 ======
 
azonenberg/microchip/23k256.1396941207.txt.gz · Last modified: 2014/04/08 07:13 by azonenberg
 
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