NTC Proprietary
Level: Property
DDR3(L)-2Gb SDRAM
NT5CB(C)256M8JQ/NT5CB(C)128M16JR
Input/Output Capacitance
1600
1866
2133
Unit
Notes
Parameter
Symbol
Min
1.2
Max
2.3
Min
1.2
Max
2.2
Min
1.2
Max
2.1
CIO
(DDR3)
CIO
pF
pF
1,2,3
1,2,3
Input/output capacitance
(DQ, DM, DQS, , TDQS,T)
1.2
2.2
1.2
2.1
-
-
(DDR3L)
CCK
Input capacitance, CK and
Input capacitance delta, CK and
Input/output capacitance delta DQS
and
0.6
1.4
0.6
1.3
0.6
1.3
pF
pF
2,3
CDCK
0
0.15
0
0.15
0
0.15
2,3,4
CDDQS
0
0.15
1.3
0
0.15
1.2
0
0.15
1.2
-
pF
pF
pF
pF
pF
2,3,5
2,3,6
CI
(DDR3)
CI
0.55
0.55
-0.4
-0.4
0.55
0.55
-0.4
-0.4
0.55
-
Input capacitance,
(CTRL, ADD,CMD input-only pins)
1.2
1.2
2,3,6
(DDR3L)
Input capacitance delta,
(All CTRL input-only pins
CDI_CTRL
0.2
0.4
0.2
0.4
-0.4
-0.4
0.2
0.4
2,3,7,8
2,3,9,10
Input capacitance delta,
CDI_ADD_
CMD
(All ADD/CMD input-only pins)
Input/output capacitance delta, DQ,
DM, DQS, , TDQS, T
Input/output capacitance of ZQ pin
CDIO
CZQ
-0.5
0.3
-0.5
0.3
-0.5
0.3
pF
pF
2,3,11
2,3,12
-
3
-
3
-
3
NOTE 1. Although the DM, TDQS and T pins have different functions, the loading matches DQ and DQS
NOTE 2. This parameter is not subject to production test. It is verified . 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, REET and ODT as necessary).
VDD=VDDQ=1.5V, VBIAS=VDD/2 and ondie termination off.
NOTE 3. This parameter applies to monolithic devices only; stacked/dual-die devices are not covered here
NOTE 4. Absolute value of CCK-
NOTE 5. Absolute value of CIO(DQS)-CIO()
NOTE 6. CI applies to ODT, , CKE, A0-A14, BA0-BA2, RA, A, WE.
NOTE 7. CDI_CTRL applies to ODT, and CKE
NOTE 8. CDI_CTRL=CI(CTRL)-0.5*(CI(CLK)+CI(L))
NOTE 9. CDI_ADD_CMD applies to A0-A14, BA0-BA2, RA, A and WE
NOTE 10. CDI_ADD_CMD=CI(ADD_CMD) - 0.5*(CI(CLK)+CI(L))
NOTE 11. CDIO=CIO(DQ,DM) - 0.5*(CIO(DQS)+CIO())
NOTE 12. Maximum external load capacitance on ZQ pin: 5 pF.
Version 1.4
05/2019
118
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