OKI (MSM) - 16 Megabit

M51V17160-70J
^^^---------------- M51 = OKI
M51V17160-70J
   ^--------------- V = 3,3volt / (blank) = 5volt
M51V17160-70J
    ^-------------- 1 = 16 Megabit chip
                    4 = 4  Megabit chip
M51V17160-70J
     ^------------- 8 = 1K refresh
                    7 = 2K refresh
                    6 = 4K refresh
M51V17160-70J
      ^^----------- Internal Organization: 
                    10 = 16Meg x 1
                    16 = 1Meg x 16
                    40 = 4Meg x 4
                    80 = 2Meg x 8
M51V17160-70J
        ^---------- 0 = Fast Page
                    5 = EDO
M51V17160-70J
          ^^------- Speed: 50=50ns / 60=60ns / 70=70ns