HYB18M1G320BF Datasheet, PDF (50/62 Pages) Qimonda AG – DRAMs for Mobile Applications 1-Gbit x32 DDR Mobile-RAM

Data Sheet
HY[B/E]18M1G320BF
1-Gbit DDR Mobile-RAM
Parameter
Symbol
Values
TABLE 21
Pin Capacitances
Unit Note
min.
max.
Input capacitance: CK, CK
C_I1
4.0
6.5
pF
1)2)3)
Delta input capacitance: CK, CK
CD_I1
–
0.5
pF
Input capacitance: all other input-only balls
C_I2
4.0
6.5
pF
Delta input capacitance: all other input-only balls
CD_I2
–
1.0
pF
Input/output capacitance: DQ, DQS, DM
C_IO
3.0
6.0
pF
Delta input/output capacitance: DQ, DQS, DM
CD_IO
–
1.0
pF
1) These values are not subject to production test but verified by device characterization.
2) Input capacitance is measured according to JEP147 procedure for measuring capacitance using a vector network analyzer. VDD, VDDQ
are applied and all other balls (except the ball under test) are floating. DQ’s should be in high impedance state. This may be achieved by
pulling CKE to low level.
3) Although DM is an input-only ball, it’s input capacitance models the input capacitance of the DQ and DQS balls.
Rev.1.00, 2007-03
50
02022006-J7N7-GYFP