參數資料
型號: HYB18T256400AF
廠商: INFINEON TECHNOLOGIES AG
英文描述: 256 Mbi t DDR2 SDRAM
中文描述: 256姆噸DDR2內存
文件頁數: 71/90頁
文件大小: 1246K
代理商: HYB18T256400AF
HYB18T256400/800/160AF
256Mb DDR2 SDRAM
INFINEON Technologies
Page 71 Rev. 1.02 May 2004
5.5 Input / Output Capacitance
5.6 Power & Ground Clamp V-I Characteristics
Power and Ground clamps are provided on address (A0~A12, BA0, BA1), RAS, CAS, CS, WE, CKE and ODT
pins. The V-I characteristics for pins with clamps is shown in the following table:
Symbol
Parameter
min.
max.
Units
CCK
Input capacitance, CK and CK
1.0
2.0
pF
CDCK
Input capacitance delta, CK and CK
-
0.25
pF
CI
Input capacitance, all other input-only pins
1.0
2.0
pF
CDI
Input capacitance delta, all other input-only pins
-
0.25
pF
CIO
Input/output capacitance,
DQ, DM, DQS, DQS, RDQS, RDQS
3.0
4.0
pF
CDIO
Input/output capacitance delta,
DQ, DM, DQS, DQS, RDQS, RDQS
-
0.5
pF
Voltage across clamp
(V)
Minimum Power
Clamp Current (mA)
Minimum Ground
Clamp Current (mA)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
1.0
2.5
4.7
6.8
9.1
11.0
13.5
16.0
18.2
21.0
0.1
1.0
2.5
4.7
6.8
9.1
11.0
13.5
16.0
18.2
21.0
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