Rev. 1.0 / Apr. 2013

26

Input/Output Capacitance

Parameter

Symbol

DDR3-800 DDR3-1066 DDR3-1333 DDR3-1600 DDR3-1866 DDR3-2133

Units Notes

Min

Max

Min

Max Min

Max

Min Max Min Max Min Max

Input/output capacitance

(DQ, DM, DQS, DQS,

TDQS, TDQS)

1.4

3.0

1.4

2.7

1.4

2.5

1.4

2.3

1.4

2.2

1.4

2.1

pF

1,2,3

Input capacitance, CK and

CK

0.8

1.6

0.8

1.6

0.8

1.4

0.8

1.4

0.8

1.3

0.8

1.3

pF

2,3

Input capacitance delta

CK and CK

0

0.15

0

0.15

0

0.15

0

0.15

0

0.15

0

0.15

pF

2,3,4

Input capacitance delta,

DQS and DQS

0

0.20

0

0.20

0

0.15

0

0.15

0

0.15

0

0.15

pF

2,3,5

Input capacitance

(All other input-only pins)

0.75

1.4

0.75

1.35

0.75

1.3

0.75

1.3

0.75

1.2

0.75

1.2

pF

2,3,6

Input capacitance delta

(All CTRL input-only pins)

L

-0.5

0.3

-0.5

0.3

-0.4

0.2

-0.4

0.2

-0.4

0.2

-0.4

0.2

pF

2,3,7,8

Input capacitance delta

(All ADD/CMD input-only

pins)

_CMD

-0.5

0.5

-0.5

0.5

-0.4

0.4

-0.4

0.4

-0.4

0.4

-0.4

0.4

pF

2,3,9,10

Input/output capacitance

delta

(DQ, DM, DQS, DQS)

-0.5

0.3

-0.5

0.3

-0.5

0.3

-0.5

0.3

-0.5

0.3

-0.5

0.3

pF

2,3,11

Input/output capacitance

of ZQ pin

-

3

-

3

-

3

-3-3-3

pF

2,3,12

Notes:

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

2. This parameter is not subject to production test. It is verified by design and characterization. The capacitance is



measured according to JEP147(“PROCEDURE FOR MEASURING INPUT CAPACITANCE USING A VECTOR NETWORK



ANALYZER(VNA)”) with VDD, VDDQ, VSS,VSSQ applied and all other pins floating (except the pin under test, CKE,



RESET and ODT as necessary). VDD=VDDQ=1.5V, VBIAS=VDD/2 and on-die termination off.

3. This parameter applies to monolithic devices only; stacked/dual-die devices are not covered here

12. Maximum external load capacitance an ZQ pin: 5 pF.