
Rev. 0.3 /  Dec. 01
27 
HY5DU12422T
HY5DU12822T
HY5DU121622T
DETAILED TEST CONDITIONS FOR DDR SDRAM IDD1 & IDD7
IDD1 : Operating current: One bank operation
1. Typical Case : VDD = 2.5V, T=25 
o
C
2. Worst Case : VDD = 2.7V, T= 10 
o
C
3. Only one bank is accessed with tRC(min), Burst Mode, Address and Control inputs on NOP edge are
     changing once per clock cycle. lout = 0mA
4. Timing patterns
    - DDR200(100Mhz, CL=2) : tCK = 10ns, CL2, BL=4, tRCD = 2*tCK, tRAS = 5*tCK
      Read : A0 N R0 N N P0 N A0 N - repeat the same timing with random address changing 50% of data changing
      at every burst
    - DDR266B(133Mhz, CL=2.5) : tCK = 7.5ns, CL=2.5, BL=4, tRCD = 3*tCK, tRC = 9*tCK, tRAS = 5*tCK
      Read : A0 N N R0 N P0 N N N A0 N - repeat the same timing with random address changing
     50% of data changing at every burst
    - DDR266A (133Mhz, CL=2) : tCK = 7.5ns, CL=2, BL=4, tRCD = 3*tCK, tRC = 9*tCK, tRAS = 5*tCK
      Read : A0 N N R0 N P0 N N N A0 N - repeat the same timing with random address changing
      50% of data changing at every burst
      Legend : A=Activate, R=Read, W=Write, P=Precharge, N=NOP
IDD7 : Operating current: Four bank operation
1. Typical Case : VDD = 2.5V, T=25
 o
C
2. Worst Case : VDD = 2.7V, T= 10 
o
C
3. Four banks are being interleaved with tRC(min), Burst Mode, Address and Control inputs on NOP edge are not
    changing. lout = 0mA
4. Timing patterns
    - DDR200(100Mhz, CL=2) : tCK = 10ns, CL2, BL=4, tRRD = 2*tCK, tRCD= 3*tCK, Read with autoprecharge
      Read : A0 N A1 R0 A2 R1 A3 R2 A0 R3 A1 R0 - repeat the same timing with random address changing
      50% of data changing at every burst
    - DDR266B(133Mhz, CL=2.5) : tCK = 7.5ns, CL=2.5, BL=4, tRRD = 2*tCK, tRCD = 3*tCK Read with autoprecharge
      Read : A0 N A1 R0 A2 R1 A3 R2 N R3 A0 N A1 R0 - repeat the same timing with random address changing
      50% of data changing at every burst
    - DDR266A (133Mhz, CL=2) : tCK = 7.5ns, CL2=2, BL=4, tRRD = 2*tCK, tRCD = 3*tCK
      Read : A0 N A1 R0 A2 R1 A3 R2 N R3 A0 N A1 R0 - repeat the same timing with random address changing
      50% of data changing at every burst
      Legend : A=Activate, R=Read, W=Write, P=Precharge, N=NOP