EDD5104ABTA データシートの表示（PDF） - Elpida Memory, Inc

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EDD5104ABTA

512M bits DDR SDRAM

Elpida Memory, Inc 

EDD5104ABTA, EDD5108ABTA

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

Parameter

Symbol Pins

Input capacitance

CI1

CK, /CK

CI2

All other input pins

Delta input capacitance

Cdi1

CK, /CK

Cdi2

All other input-only pins

Data input/output capacitance CI/O

DQ, DM, DQS

Delta input/output capacitance Cdio

DQ, DM, DQS

Notes: 1. These parameters are measured on conditions:

TA = +25°C.

2. DOUT circuits are disabled.

min.

Typ

max.

Unit

Notes

2.0

—

3.0

pF

1

2.0

—

3.0

pF

1

—

—

0.25

pF

1

—

—

0.5

pF

1

4.0

—

5

pF

1, 2,

—

—

0.5

pF

1

f = 100MHz, VOUT = VDDQ/2, ∆VOUT = 0.2V,

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

-6B

-7A

-7B

Parameter

Clock cycle time

(CL = 2)

(CL = 2.5)

Symbol min.

tCK 7.5

tCK 6

max.

12

12

CK high-level width

tCH 0.45

0.55

CK low-level width

CK half period

DQ output access time from

CK, /CK

DQS output access time from CK,

/CK

DQS to DQ skew

tCL

0.45

0.55

tHP

min

(tCH, tCL)

—

tAC –0.7

0.7

tDQSC

K

–0.6

0.6

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

tWPRE

S

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

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

—

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

—

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

Preliminary Data Sheet E0237E30 (Ver. 3.0)

6

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