{{tag>collection_mcmaster vendor_nec type_memory type_memory/sram year_unknown year_1997 foundry_unknown tech_unknown}}


====== Packages ======

Unknown which die corresponds to which of the two.

{{:mcmaster:nec:d43256bcz-70ll:package_top.jpg?300|}}
{{:mcmaster:nec:d43256bcz-70ll:package_bottom.jpg?300|}}

===== 1 =====

Top:
  NEC JAPAN
  D43256BCZ-70LL
  9731XD011
  
Bottom:
  02 29


===== 2 =====

Top:
  NEC JAPAN
  D43256BCZ-70LL
  9707ED026
  
Bottom :
  M1 3


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

===== 1 =====

Larger of the two dies.

{{:mcmaster:nec:d43256bcz-70ll:big:ch2x.jpg?300|}}
{{:mcmaster:nec:d43256bcz-70ll:big:logo_mit20x.jpg?300|}}
{{:mcmaster:nec:d43256bcz-70ll:big:logo1_mit20x.jpg?300|}}
{{:mcmaster:nec:d43256bcz-70ll:big:sample_mit20x.jpg?300|}}


Markings:
  NEC
  
  D43256J  


===== 2 =====

Smaller of the two dies.  As its likely a process shrink, its not surprising that the die revision is higher.

{{:mcmaster:nec:d43256bcz-70ll:small:ch2x.jpg?300|}}
{{:mcmaster:nec:d43256bcz-70ll:small:logo_mit20x.jpg?300|}}
{{:mcmaster:nec:d43256bcz-70ll:small:sample_mit20x.jpg?300|}}

Markings:
  NEC
  
  D43256T