E1922E20 Datasheet, PDF (20/29 Pages) Elpida Memory – 4G bits DDR3L SDRAM

2.2 Pin Capacitance
EDJ4204EFBG, EDJ4208EFBG, EDJ4216EFBG
Table 17: Pin Capacitance [DDR3-800 to 1600] (TC = 25°C, VDD, VDDQ = 1.283V to 1.45V)
DDR3L-800
DDR3L-1066
DDR3L-1333
DDR3L-1600
Parameter
Symbol Min
Max Min
Max Min
Max Min
Max
Units Notes
Input/output capacitance CIO
1.4
2.5
1.4
2.5
1.4
2.3
1.4
2.2
pF 1, 2
Input capacitance,
CK and /CK
CCK
0.8
1.6
0.8
1.6
0.8
1.4
0.8
1.4
pF 2
Input capacitance delta,
CK and /CK
CDCK
0
0.15 0
0.15 0
0.15 0
0.15 pF 2, 3
Input/output capacitance
delta,
CDDQS 0
DQS and /DQS
0.2
0
0.2
0
0.15 0
0.15 pF 2, 4
Input capacitance,
(control, address,
command, input-only
CI
pins)
0.75 1.3
0.75 1.3
0.75 1.3
0.75 1.2
pF 2, 5
Input capacitance delta,
(All control input-only CDI_CTRL −0.5 0.3
pins)
−0.5 0.3
−0.4 0.2
−0.4 0.2
pF 2, 6, 7
Input capacitance delta,
(All addres/command
input-only pins)
CDI_ADD_
CMD
−0.5
0.5
−0.5 0.5
−0.4 0.4
−0.4 0.4
pF 2, 8, 9
Input/output capacitance
delta, DQ,DM, DQS, CDIO
/DQS, TDQS, /TDQS
−0.5 0.3
−0.5 0.3
−0.5 0.3
−0.5 0.3
pF 2, 10
Input/output capacitance
of ZQ pin
CZQ
⎯
3
⎯
3
⎯
3
⎯
3
pF 2, 11
Notes: 1. Although the DM, TDQS and /TDQS pins have different functions, the loading matches DQ and DQS.
2. VDD, VDDQ, VSS, VSSQ applied and all other pins floating (except the pin under test, CKE, /RESET and ODT as
necessary). VDD = VDDQ = 1.35V, VBIAS=VDD/2 and ondie termination off.
3. Absolute value of CCK-C/CK.
4. Absolute value of CIO(DQS)-CIO(/DQS).
5. CI applies to ODT, /CS, CKE, A0-A15, BA0-BA2, /RAS, /CAS and /WE.
6. CDI_CTRL applies to ODT, /CS and CKE.
7. CDI_CTRL = CI(CTRL) − 0.5 × (CI(CK)+CI(/CK)).
8. CDI_ADD_CMD applies to A0-A15, BA0-BA2, /RAS, /CAS and /WE.
9. CDI_ADD_CMD = CI(ADD_CMD) − 0.5 × (CI(CK)+CI(/CK)).
10. CDIO=CIO(DQ,DM) − 0.5 × (CIO(DQS)+CIO(/DQS)).
11. Maximum external load capacitance on ZQ pin: 5pF.
Data Sheet E1922E20 (Ver. 2.0)
20