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Understanding RAM chip Numbers: Samsung

Link naar de fabrikant. Link to the manufacturer.

Sample	Explanation
	16 Mb Chip organised as: 2M x 16 bits 2K refresh, Fast Page Mode (FPM) Speed = 70ns, Supply = 5 Volt
	16 Mb Chip organised as: 1M x 16 bits 1K refresh, Fast Page Mode (FPM) Speed = 70ns, Supply = 5 Volt

Samsung / SDRAM

How do I read the type number?

K4S280832C-TC75
^^------------------- K4 = Samsung

K4S280832C-TC75
  ^------------------ S = SDRAM
                      H = DDR SDRAM
K4S280832C-TC75
   ^^^^^^------------ 280432 = 4 Banks x 8M x 4  (128Mbit) : check module size/banks
                      280832 = 4 Banks x 4M x 8  (128Mbit) : check module size/banks
                      281632 = 4 Banks x 2M x 16 (128Mbit) : check module size/banks
                      560432 = 4 Banks x 16M x 4 (256Mbit) : check module size/banks
                      560438 = 4 Banks x 16M x 4 (256Mbit) : check module size/banks
                      560832 = 4 Banks x 8M x 8  (256Mbit) : check module size/banks
                      561632 = 4 Banks x 4M x 16 (256Mbit) : check module size/banks
                      561638 = 4 Banks x 4M x 16 (256Mbit) : check module size/banks
K4S280832C-TC75
             ^^------ Speed:
                      75 = 133MHz / PC133 ?-?-? CL3
                      1H = 100MHz / PC100 ?-?-? CL2
                      1L = 100MHz / PC100 ?-?-? CL3

Samsung / SEC (KM) - DRAM 4 Megabit

How do I read the type number?

KM416C1200AJ-6
^^----------------- KM = Samsung / SEC
KM416C1200AJ-6
             ^----- Snelheid: 5 = 50ns / 6 = 60ns / 7=70ns

Samsung / SEC (KM) - 16/64 Megabit and many others

How do I read the type number?

KM48V2104ALT-6
^^^---------------- KM4 = Samsung / SEC
KM48V2104ALT-6
    ^-------------- V = 3,3volt / C = 5volt
                    G = SGRAM: Click here
KM48V2104ALT-6
   ^-^------------- Internal Organization: 
                    4-256= 1Mb  256k x 4 : check module size/banks
                    4-4  = 16Mb 4Meg x 4 : check module size/banks
                    4-4  = 16Mb 4Meg x 4 : check module size/banks
                    8-2  = 16Mb 2Meg x 8 : check module size/banks
                    8-8  = 64Mb 8Meg x 8 : check module size/banks
                    8-5  = 4Mb  512K x 8 - 4 Megabit chip: Click here
                    16-1 = 16Mb 1Meg x 16: check module size/banks
                    16-2 = 4Mb  256K x 16 - 4 Megabit chip: Click here
KM48V2104ALT-6
      ^^----------- 00 = 4K refresh
                    10 = 2K refresh
                    20 = 1K refresh
KM48V2104ALT-6
        ^---------- 0 = Fast Page
                    4 = EDO
KM48V2104ALT-6
             ^----- Speed: 5 = 50ns / 6 = 60ns / 7=70ns

Samsung / SEC (KM) - VRAM

How do I read the type number?

KM4216C256G-60
^^^---------------- KM4 = Samsung / SEC
KM4216C256G-60
   ^--------------- 2 = VRAM
KM4216C256G-60
    ^-------------- V = 3,3volt / C = 5volt / W = 5volt (WRAM)
KM4216C256G-60
    ^^-^^^--------- Internal Organization: 
                    8-128   = 128K x 8  (1M bit): check module size/banks
                    16-256  = 256K x 16 (4M bit): check module size/banks
                    16-258  = 256K x 16 (4M bit): check module size/banks
                    32-259  = 256K x 32 (8M bit): check module size/banks
KM4216C256G-60
            ^^----- Speed: 50 = 50ns / 60 = 60ns / 70 = 70ns / 8 = 80ns

Samsung / SEC (KM) - SGRAM

How do I read the type number?

KM4132G271BQ-10
^^^---------------- KM4 = Samsung / SEC
KM4132G271BQ-10
   ^--------------- 1 = VRAM
KM4132G271BQ-10
      ^------------ G = SGRAM
KM4132G271BQ-10
    ^^-^^^--------- Internal Organization: 
                    32-271  = 256K x 32 (8M bit): check module size/banks
                    32-512  = 512K x 32(16M bit): check module size/banks
KM4132G271BQ-10
             ^^----- Speed: ????