MT41J256M4 datasheet(66/181 Pages) MDTIC

Part #	MT41J256M4

Description	1Gb: x4, x8, x16 DDR3 SDRAM

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Manufacturer	MDTIC [Micon Design Technology Corporation]

Direct Link	http://www.mdtic.com.tw

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Micron Technology, Inc., reserves the right to change products or specifications without notice.

1Gb_DDR3_3.fm - Rev. D 8/1/08 EN

66

1Gb: x4, x8, x16 DDR3 SDRAM

Speed Bin Tables

Notes:

1. tREFI depends on TOPER.

2. The CL and CWL settings result in tCK requirements. When making a selection of tCK, both

CL and CWL requirement settings need to be fulfilled.

3. Reserved settings are not allowed.

Table 52:

DDR3-1600 Speed Bins

DDR3-1600 Speed Bin

-125F

-125E

-125

Units

Notes

CL-tRCD-tRP

9-9-9

10-10-10

11-11-11

Parameter

Symbol

Min

Max

Min

Max

Min

Max

ACTIVATE to internal READ

or WRITE delay time

tRCD

11.25

–

12.5

–

13.75

–

ns

PRECHARGE command

period

tRP

11.25

–

12.5

–

13.75

–

ns

ACTIVATE-to-ACTIVATE or

REFRESH command period

tRC

46.25

–

47.5

–

48.75

–

ns

ACTIVATE-to-PRECHARGE

command period

tRAS

35

9 × tREFI

35

9 × tREFI

35

9 × tREFI

ns

1

CL = 5

CWL = 5

tCK (AVG)

2.5

3.3

2.5

3.3

Reserved

ns

2, 3

CWL = 6, 7, 8

tCK (AVG)

Reserved

ns

3

CL = 6

CWL = 5

tCK (AVG)

2.5

3.3

2.5

3.3

2.5

3.3

ns

2

CWL = 6

tCK (AVG)

Reserved

ns

2, 3

CWL = 7, 8

tCK (AVG)

Reserved

ns

3

CL = 7

CWL = 5

tCK (AVG)

Reserved

ns

3

CWL = 6

tCK (AVG)

1.875

<2.5

1.875

<2.5

Reserved

ns

2, 3

CWL = 7

tCK (AVG)

Reserved

ns

2, 3

CWL = 8

tCK (AVG)

Reserved

ns

3

CL = 8

CWL = 5

tCK (AVG)

Reserved

ns

3

CWL = 6

tCK (AVG)

1.875

<2.5

1.875

<2.5

1.875

<2.5

ns

2

CWL = 7

tCK (AVG)

1.5

<1.875

Reserved

ns

2, 3

CWL = 8

tCK (AVG)

Reserved

ns

2, 3

CL = 9

CWL = 5, 6

tCK (AVG)

Reserved

ns

3

CWL = 7

tCK (AVG)

1.5

<1.875

1.5

<1.875

Reserved

ns

2, 3

CWL = 8

tCK (AVG)

1.25

<1.5

Reserved

ns

2, 3

CL = 10

CWL = 5, 6

tCK (AVG)

Reserved

ns

3

CWL = 7

tCK (AVG)

1.5

<1.875

1.5

<1.875

1.5

<1.875

ns

2

CWL = 8

tCK (AVG)

1.25

<1.5

1.25

<1.5

Reserved

ns

2, 3

CL = 11

CWL = 5, 6, 7

tCK (AVG)

Reserved

ns

3

CWL = 8

tCK (AVG)

1.25<1.5

ns

2

Supported CL settings

5, 6, 7, 8, 9, 10, 11

6, 8, 10, 11

CK

Supported CWL settings

5, 6, 7, 8

CK

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