Differences

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--- azonenberg:unknown:att_sim [2014/03/23 19:09] – azonenberg
+++ azonenberg:unknown:att_sim [Unknown date] (current) – removed - external edit (Unknown date) 127.0.0.1
@@ Line 1: / Line 1: @@
-{{tag>collection_az vendor_unknown type_crypto type_crypto/smartcard year_unknown tech_unknown foundry_unknown}}
-SIM card from an old AT&T cell phone. No vendor logo, die copyright, or other identifying markings whatsoever.
-====== Package ======
-{{:azonenberg:unknown:dscf5046_cropped.jpg?500|}} {{:azonenberg:unknown:dscf5047_cropped.jpg?500|}}
-====== Die carrier ======
-{{:azonenberg:unknown:dscf5050_cropped.jpg?500|}} {{:azonenberg:unknown:dscf5051_cropped.jpg?500|}}
-====== Die ======
-Size is approximately 2000 x 1340 μm (2.68 mm<sup>2</sup>).
-===== Top layer =====
-{{:azonenberg:unknown:att_sim_bf_neo10x_4k.jpg?800|}}
-The mesh appears pretty weak: one serpentine line zigzagging back and forth with ~850 nm pitch (probably 400-500 nm lines, consistent with the ~180 nm technology node). Since it appears there's only one net there would be no penalty for shorting adjacent lines together, or for cutting out a sizeable area and bypassing it.
-{{:azonenberg:unknown:att_sim_11_bf_neo40x_annotated.jpg?600|}}
-===== Next layer down =====
-HF etched until mesh removal, but not imaged yet.