MCIMX25 Motorola Semiconductor Products, MCIMX25 Datasheet - Page 31

• Manufacturer Part Number: MCIMX25
• Manufacturer: Motorola Semiconductor Products

3.5.3.1
Table 20
1.8V ( 5%) applications.
Freescale Semiconductor
Duty cycle
Clock frequency
Output pad transition times (max. drive)
Output pad transition times (high drive)
Output pad transition times (standard drive)
Output pad propagation delay (max. drive),
50%–50%
Output pad propagation delay (high drive),
50%–50%
Output pad propagation delay (standard
drive), 50%–50%
Output pad propagation delay (max. drive),
40%–60%
Output pad propagation delay (high drive),
40%–60%
Output pad propagation delay (standard
drive), 40%–60%
Output enable to output valid delay (max.
drive), 50%–50%
Output enable to output valid delay (high
drive), 50%–50%
Output enable to output valid delay
(standard drive), 50%–50%
Output enable to output valid delay (max.
drive), 40%–60%
Output enable to output valid delay (high
drive), 40%–60%
Output enable to output valid delay
(standard drive), 40%–60%
shows AC parameters for mobile DDR I/O. These settings are suitable for mDDR and DDR2
DDR_TYPE = 00 Standard Setting I/O AC Parameters and Requirements
Parameter
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 2
Table 20. AC Parameters for Mobile DDR I/O
Symbol
Fduty
tpo
tpo
tpo
tpo
tpo
tpo
tpv
tpv
tpv
tpv
tpv
tpv
tpr
tpr
tpr
f
Condition
25 pF
50 pF
25 pF
50 pF
25 pF
50 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
15 pF
35 pF
Load
—
—
0.52/0.51
0.98/0.96
1.13/1.10
2.15/2.10
2.26/2.19
4.30/4.18
0.80/1.03
1.06/1.32
1.04/1.27
1.63/1.90
1.55/1.80
2.72/3.06
0.80/0.91
1.06/1.12
1.04/1.09
1.63/1.56
1.50/1.74
2.73/2.42
1.17/1.01
1.43/1.30
1.38/1.28
1.97/1.92
1.92/1.57
3.12/3.16
1.28/1.12
1.49/1.36
1.43/1.33
1.90/1.84
1.85/1.78
2.80/2.81
Rise/Fall
Min.
40
—
0.79/0.72
1.49/1.34
1.74/1.55
3.28/2.92
3.46/3.07
6.59/5.79
1.36/1.50
1.76/1.90
1.74/1.83
2.63/2.69
2.53/2.57
4.31/4.29
1.44/1.59
1.76/1.91
1.73/1.83
2.43/2.52
2.36/2.41
3.77/3.78
1.93/1.61
2.33/2.00
2.25/1.99
3.16/2.86
4.97/4.59
2.01/1.70
2.33/2.01
2.24/1.99
2.96/2.68
2.91/2.62
4.37/4.53
3.11/2.79
Typ.
50
—
10.13/8.55
1.25/1.09
2.31/1.98
2.71/2.30
5.39/4.56
2.21/2.40
2.83/2.82
2.79/2.70
4.18/3.86
4.03/3.76
6.80/6.19
2.24/2.29
2.74/2.75
2.69/2.62
3.79/3.62
3.67/3.46
5.86/5.37
3.06/2.55
3.69/3.13
3.58/3.10
5.01/4.39
4.98/4.13
7.97/6.98
3.09/2.60
3.60/3.06
3.47/3.02
4.59/4.03
4.54/3.96
6.88/6.05
Rise/Fall
5.11/4.31
Max.
133
60
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
Notes
—
1
1
1
1
1
1
31