EDD2504AJTA-7A datasheet(9/50 Pages) ELPIDA

Part #	EDD2504AJTA-7A

Description	256M bits DDR SDRAM

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Manufacturer	ELPIDA [Elpida Memory]

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EDD2504AJTA, EDD2508AJTA

Preliminary Data Sheet E0145E50 (Ver. 5.0)

9

Timing Parameter Measured in Clock Cycle

Number of clock cycle

tCK

6ns

7.5ns

Parameter

Symbol

min.

max.

min.

max.

Write to pre-charge command delay (same bank)

tWPD

4 + BL/2

3 + BL/2

Read to pre-charge command delay (same bank)

tRPD

BL/2

Write to read command delay (to input all data)

tWRD

2 + BL/2

Burst stop command to write command delay

(CL = 2)

tBSTW

2

(CL = 2.5)

tBSTW

3

Burst stop command to DQ High-Z

(CL = 2)

tBSTZ

2

(CL = 2.5)

tBSTZ

2.5

Read command to write command delay

(to output all data)

(CL = 2)

tRWD

2 + BL/2

(CL = 2.5)

tRWD

3 + BL/2

Pre-charge command to High-Z

(CL = 2)

tHZP

2

(CL = 2.5)

tHZP

2.5

Write command to data in latency

tWCD

1

Write recovery

tWR

3

2

DM to data in latency

tDMD

0

Mode register set command cycle time

tMRD

2

Self refresh exit to non-read command

tSNR

12

10

Self refresh exit to read command

tSRD

200

Power down entry

tPDEN

1

Power down exit to command input

tPDEX

1

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EDD2504AJTA-7A Datasheet(PDF) 9 Page - Elpida Memory

EDD2504AJTA-7A Datasheet(HTML) 9 Page - Elpida Memory

Similar Part No. - EDD2504AJTA-7A

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