EM47FM1688MCA_15 datasheet(7/39 Pages) EOREX

Part #	EM47FM1688MCA

Description	Double DATA RATE 3 SDRAM

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Manufacturer	EOREX [Eorex Corporation]

Direct Link	http://www.eorex.com

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Pin Capacitance

Notes1. VDD, VDDQ, VSS, VSSQ applied and all other pins (except the pin under test) floating. VDD = VDDQ

EM47FM1688MCA/SCA

=1.35V (1.5V), VBIAS=VDD/2.

Notes2. Absolute value of CCK(CK-pin) - CCK(/CK-pin).

Notes3. CCK (min.) will be equal to CIN (min.)

Notes4. CDIN_CTRL = CIN_CTRL - 0.5*(CCK(CK-pin) + CCK(/CK-pin))

Notes5. CDIN_ADD_CMD = CIN_ADD_CMD - 0.5*(CCK(CK-pin) + CCK(/CK-pin))

Notes6. Although the DM, TDQS and /TDQS pins have different functions, the loading matches DQ and DQS.

Notes7. DQ should be in high impedance state.

Notes8. CDIO = CIO (DQ, DM) - 0.5*(CIO(DQS-pin) + CIO(/DQS-pin)).

Notes9. Maximum external load capacitance on ZQ pin is 5pF.

Notes10. Absolute value of CIO(DQS) - CIO(/DQS).

Jul. 2014

7/39

www.eorex.com

Symbol

Parameters

Pins

Min.

Max.

Unit

Notes

CCK

Input pin capacitance, CK, /CK

CK, /CK

0.8

1.4

pF

1,3

CDCK

Delta input pin capacitance,

CK, /CK

0

0.15

pF

1,2

CIN_CTRL

Input pin capacitance, control

pins

/CS,CKE,ODT

0.75

1.3

pF

1

CDIN_CTRL

Delta input pin capacitance,

control pins

-0.4

0.2

pF

1,4

CIN_ADD_CMD

Input pin capacitance, address

and command pins

/RAS,/CAS,/WE,

Address

0.75

1.3

pF

1

CDIN_ADD_CMD

Delta input pin capacitance,

address and command pins

-0.4

0.4

pF

1,5

CIO

Input/output pins capacitance

DQ,DQS,/DQS

TDQS,/TDQS,

DM

1.5

2.5

pF

1,6

CDIO

Delta input/output pins

capacitance

-0.5

0.3

pF

1,7,8

CDDQS

Delta input/output pins

capacitance

DQS, /DQS

0

0.15

pF

1,10

CZQ

Input/output pin capacitance,

ZQ

-

3

pF

1,9

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