HY5PS1G821M Datasheet, PDF (65/79 Pages) Hynix Semiconductor – 1Gb DDR2 SDRAM(DDP)

1HY5PS12421(L)M
HY5PS12821(L)M
5.4 Default Output V-I characteristics
DDR2 SDRAM output driver characteristics are defined for full strength default operation as selected by the
EMRS1 bits A7-A9 = ‘111’. The above Figures show the driver characteristics graphically, and tables show the
same data in tabular format suitable for input into simulation tools.
5.4.1 Full Strength Default Pulldown Driver Characteristics
Pulldow n Current (mA)
Voltage (V)
Minimum (23.4 Ohms)
Nominal Default
Low (18 ohms)
Nominal Default
High (18 ohms)
Maximum (12.6 Ohms)
0.2
8.5
0.3
12.1
0.4
14.7
0.5
16.4
0.6
17.8
0.7
18.6
0.8
19.0
0.9
19.3
1.0
19.7
1.1
19.9
1.2
20.0
1.3
20.1
1.4
20.2
1.5
20.3
1.6
20.4
1.7
20.6
1.8
1.9
11.3
11.8
16.5
16.8
21.2
22.1
25.0
27.6
28.3
32.4
30.9
36.9
33.0
40.9
34.5
44.6
35.5
47.7
36.1
50.4
36.6
52.6
36.9
54.2
37.1
55.9
37.4
57.1
37.6
58.4
37.7
59.6
37.9
60.9
15.9
23.8
31.8
39.7
47.7
55.0
62.3
69.4
75.3
80.5
84.6
87.7
90.8
92.9
94.9
97.0
99.1
101.1
120
100
Maximum
80
Nominal
Default
60
High
40
Nominal
Default
Low
20
Minimum
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9
VOUT to VSSQ (V)
Rev. 0.2 / Oct. 2005
65