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azonenberg:microchip:23k256 [2014/04/08 03:26]
azonenberg
azonenberg:microchip:23k256 [2015/01/04 17:50] (current)
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 SPI serial SRAM chip. Looks like 4 metal layers and a fairly fine process geometry. SPI serial SRAM chip. Looks like 4 metal layers and a fairly fine process geometry.
  
-Definitely //not// one of Microchip'​s standard ​fan 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.+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.
  
 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? 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?
 
azonenberg/microchip/23k256.txt ยท Last modified: 2015/01/04 17:50 (external edit)
 
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