EBD10RD4ABFA View Datasheet(PDF) - Elpida Memory, Inc

Part Name

Description

Manufacturer

EBD10RD4ABFA

1GB Registered DDR SDRAM DIMM

Elpida Memory, Inc 

EBD10RD4ABFA

Pin Capacitance (TA = +25°C, VDD = 2.5V ± 0.2V)

Parameter

Symbol

Pins

max.

Unit

Notes

Input capacitance

CI1

Address, /RAS, /CAS, /WE,

/CS, CKE

12

pF

1, 3

Input capacitance

CI2

CK, /CK

20

pF

1, 3

Data and DQS input/output

capacitance

CO

DQ, DQS, CB

15

pF

1, 2, 3

Notes: 1. These parameters are measured on conditions: f = 100MHz, VOUT = VDDQ/2, ∆VOUT = 0.2V.

2. Dout circuits are disabled.

3. This parameter is sampled and not 100% tested.

AC Characteristics (TA = 0 to +70°C, VDD, VDDQ = 2.5V ± 0.2V, VSS = 0V)

(DDR SDRAM Component Specification)

-6B

Parameter

Symbol min.

max

Clock cycle time

(CL = 2)

(CL = 2.5)

tCK

7.5

12

tCK

6

12

CK high-level width

tCH

0.45

0.55

CK low-level width

tCL

0.45

0.55

CK half period

tHP

min

(tCH, tCL)

—

DQ output access time from

CK, /CK

tAC

–0.7

0.7

DQS output access time from CK,

/CK

tDQSCK –0.6

0.6

DQS to DQ skew

tDQSQ —

0.45

DQ/DQS output hold time from

DQS

tQH

tHP – tQHS —

Data hold skew factor

tQHS —

0.55

Data-out high-impedance time

from CK, /CK

tHZ

–0.7

0.7

Data-out low-impedance time from

CK, /CK

tLZ

–0.7

0.7

Read preamble

tRPRE 0.9

1.1

Read postamble

tRPST 0.4

0.6

DQ and DM input setup time

tDS

0.45

—

DQ and DM input hold time

tDH

0.45

—

DQ and DM input pulse width

tDIPW 1.75

—

Write preamble setup time

tWPRES 0

—

Write preamble

tWPRE 0.25

—

Write postamble

tWPST 0.4

0.6

Write command to first DQS

latching transition

tDQSS 0.75

1.25

DQS falling edge to CK setup time tDSS 0.2

—

DQS falling edge hold time from

CK

tDSH

0.2

—

DQS input high pulse width

tDQSH 0.35

—

DQS input low pulse width

tDQSL 0.35

—

Address and control input setup

time

tIS

0.75

—

-7A

min.

max

7.5

12

7.5

12

0.45

0.55

0.45

0.55

min

(tCH, tCL)

—

–0.75

0.75

–0.75

0.75

—

0.5

tHP – tQHS —

—

0.75

–0.75

0.75

–0.75

0.75

0.9

1.1

0.4

0.6

0.5

—

0.5

—

1.75

—

0

—

0.25

—

0.4

0.6

0.75

1.25

0.2

—

0.2

—

0.35

—

0.35

—

0.9

—

-7B

min.

max

10

12

7.5

12

0.45

0.55

0.45

0.55

min

(tCH, tCL)

—

–0.75

0.75

–0.75

0.75

—

0.5

tHP – tQHS —

—

0.75

–0.75

0.75

–0.75

0.75

0.9

1.1

0.4

0.6

0.5

—

0.5

—

1.75

—

0

—

0.25

—

0.4

0.6

0.75

1.25

0.2

—

0.2

—

0.35

—

0.35

—

0.9

—

Unit Notes

ns 10

ns

tCK

tCK

tCK

ns 2, 11

ns 2, 11

ns 3

ns

ns

ns 5, 11

ns 6, 11

tCK

tCK

ns 8

ns 8

ns 7

ns

tCK

tCK 9

tCK

tCK

tCK

tCK

tCK

ns 8

Preliminary Data Sheet E0274E40 (Ver. 4.0)

12

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