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Understanding RAM chip numbers: Infineon

Link naar de fabrikant. Link to the manufacturer.

Infineon (HYB) - SDRAM

How do I read the type number?

HYB39S256800CTL-8A
^^^------------------ HYB = Infineon (Siemens)
HYB39S256800CTL-8A
   ^^---------------- 39 = SDRAM
HYB39S256800CTL-8A
     ^--------------- S = 3.3 volt
HYB39S256800CTL-8A
      ^^^------------ Size:
                      125 = 128 MBit SDRAM
                      256 = 256 MBit SDRAM
HYB39S256800CTL-8A
         ^^^--------- 160 = 4 Banks x ?M x 16
                      400 = 4 Banks x ?M x 4
                      800 = 4 Banks x ?M x 8
HYB39S256800CTL-8A
      ^^^^^^--------- 128160 = 4 Banks x 2M x 16 : check module size/banks
                      128400 = 4 Banks x 8M x  4 : check module size/banks
                      128800 = 4 Banks x 4M x  8 : check module size/banks
                      256160 = 4 Banks x 4M x 16 : check module size/banks
                      256400 = 4 Banks x 16M x 4 : check module size/banks
                      256800 = 4 Banks x 8M  x 8 : check module size/banks
HYB39S256800CTL-8A
            ^-------- Product revision
HYB39S256800CTL-8A
             ^------- Package T = P-TSOPII
HYB39S256800CTL-8A
              ^------ L = Low Power / (blank) = Normal Power
HYB39S256800CTL-8A
                ^^--- Speed:
                      7.5 = 133MHz / PC133 3-3-3
                      8   = 125MHz / PC100 2-2-2
                      8A  = 125MHz / PC100 3-2-2