MCIMX255AJM4A Freescale, MCIMX255AJM4A Datasheet - Page 32

• Manufacturer Part Number: MCIMX255AJM4A
• Manufacturer: Freescale

Specifications of MCIMX255AJM4A

• Lead Free Status / RoHS Status: Compliant

3.6.3.1
Table 22
1.8V ( 5%) applications.
32
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 Automotive Products, Rev. 4
Table 22. 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
—
—
Rise/Fall
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
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
3.11/2.79
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
Typ.
50
—
10.13/8.55
Rise/Fall
1.25/1.09
2.31/1.98
2.71/2.30
5.11/4.31
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
Max.
133
60
Freescale Semiconductor
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
Notes
—
1
1
1
1
1
1