K4H280438B Ver la hoja de datos (PDF) - Samsung

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K4H280438B

128Mb DDR SDRAM

Samsung 

128Mb DDR SDRAM

3.3.7 Write Interrupted by a Read & DM

26

3.3.8 Write Interrupted by a Precharge & DM

27

3.3.9 Burst Stop

28

3.3.10 DM masking

29

30

3.3.11 Read With Auto Precharge

31

3.3.12 Write With Auto Precharge

32

3.3.13 Auto Refresh & Self Refresh

33

3.3.14 Power Down

34

4. Command Truth Table

5. Functional Truth Table

35

6. Absolute Maximum Rating

40

7. DC Operating Conditions & Specifications

40

7.1 DC Operating Conditions

41

7.2 DC Specifications

8. AC Operating Conditions & Timming Specification

42

8.1 AC Operating Conditions

42

8.2 AC Timming Parameters & Specification

43

9. AC Operating Test Conditions

45

10. Input/Output Capacitance

45

11. IBIS: I/V Characteristics for Input and Output Buffers

46

11.1 Normal strength driver

46

48

11.2 Half strength driver( will be included in the future)

12. QFC function

QFC definition

49

49

QFC timming on Read Operation

49

QFC timming on Write operation with tDQSSmax

50

QFC timming on Write operation with tDQSSmin

50

QFC timming example for interrupted writes operation

51

Timing Diagram

52

-5-

REV. 1.0 November. 2. 2000

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