PCIMX515DJM8C Datasheet, PDF (32/202 Pages) Freescale Semiconductor, Inc – Processors for Consumer and Industrial Products

Electrical Characteristics
Table 26. LVIO I/O Output Buffer Impedance
Parameter Symbol
Conditions
Typical
Min
Max
Unit
OVDD 2.775 V OVDD 1.875 V
Output Driver Rpu Low Drive Strength, Ztl = 150 Ω
80
104
Impedance
Medium Drive Strength, Ztl = 75 Ω
40
52
High Drive Strength, Ztl = 50 Ω
27
35
Max Drive Strength, Ztl = 37.5 Ω
20
26
Output Driver Rpd Low Drive Strength, Ztl = 150 Ω
64
88
Impedance
Medium Drive Strength, Ztl = 75 Ω
32
44
High Drive Strength, Ztl = 50 Ω
21
30
Max Drive Strength, Ztl = 37.5 Ω
16
22
150
250
Ω
75
125
51
83
38
62
134
243
Ω
66
122
44
81
34
61
4.4.2 DDR2 Output Buffer Impedance
Table 27 shows the DDR2 output buffer impedance.
Table 27. DDR2 I/O Output Buffer Impedance HVE = 0
Parameter Symbol
Test Conditions
Best Case
T_j = –40 °C
OVDD = 1.95 V
VCC = 1.3 V
Typical
T_j = 25 °C
OVDD = 1.8 V
VCC = 1.2 V
Worst Case
T_j = 105 °C
OVDD = 1.6 V
VCC = 1.1 V
Unit
Output Driver
Impedance
Output Driver
Impedance
Rpu Low Drive Strength, Ztl = 150 Ω
Medium Drive Strength, Ztl = 75 Ω
High Drive Strength, Ztl = 50 Ω
Max Drive Strength
Rpd Low Drive Strength, Ztl = 150 Ω
Medium Drive Strength, Ztl = 75 Ω
High Drive Strength, Ztl = 50 Ω
Max Drive Strength
s0–s5
000000
185
92.5
61.7
26.5
190.3
95.1
63.4
27.6
s0–s5
101010
140
70
47
19.5
145.4
72.7
48.5
19.9
s0–s5
111111
111.4
Ω
55.7
37.2
15.4
120.6
Ω
60.3
40.2
16.9
i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 6
32
Freescale Semiconductor