MCIMX257DJM4(2009) Ver la hoja de datos (PDF) - Freescale Semiconductor
Número de pieza
componentes Descripción
fabricante
MCIMX257DJM4
(Rev.:2009)
(Rev.:2009)
Freescale Semiconductor
MCIMX257DJM4 Datasheet PDF : 132 Pages
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3.5.2 Fast I/O AC Parameters
Table 18 shows the fast I/O AC parameters for OVDD = 1.65–1.95 V.
Table 18. Fast I/O AC Parameters for OVDD = 1.65–1.95 V
Parameter
Symbol
Test
Condition
Duty cycle
Fduty
—
Output pad transition times (max. drive)
tpr
25 pF
50 pF
Output pad transition times (high drive)
tpr
25 pF
50 pF
Output pad transition times (standard
drive)
tpr
25 pF
50 pF
Output pad propagation delay (max.
drive), 50%–50%
tpo
25 pF
50 pF
Output pad propagation delay (high drive), tpo
50%–50%
25 pF
50 pF
Output pad propagation delay (standard
tpo
drive), 50%–50%
25 pF
50 pF
Output pad propagation delay (max.
drive), 40%–60%
tpo
25 pF
50 pF
Output pad propagation delay (high drive), tpo
40%–60%
25 pF
50 pF
Output pad propagation delay (standard
tpo
drive), 40%–60%
25 pF
50 pF
Output enable to output valid delay (max. tpv
drive), 50%–50%
25 pF
50 pF
Output enable to output valid delay (high tpv
drive), 50%–50%
25 pF
50 pF
Output enable to output valid delay
(standard drive), 50%–50%
tpv
25 pF
50 pF
Output enable to output valid delay (max. tpv
drive), 40%–60%
25 pF
50 pF
Output enable to output valid delay (high tpv
drive), 40%–60%
25 pF
50 pF
Output enable to output valid delay
(standard drive), 40%–60%
tpv
25 pF
50 pF
Output pad slew rate (max. drive)
tps
25 pF
50 pF
Output pad slew rate (high drive)
tps
25 pF
50 pF
Output pad slew rate (standard drive)
tps
25 pF
50 pF
Min.
Rise/Fall
40
0.88/0.77
1.45/1.24
1.10/0.92
1.84/1.54
1.60/1.35
2.74/2.26
1.64/1.53
2.15/2.01
1.82/1.71
2.46/2.29
2.24/2.06
3.17/2.92
1.67/1.58
2.09/1.98
1.94/1.73
2.34/2.22
2.15/1.99
2.94/2.74
1.87/1.70
2.36/2.16
2.05/1.88
2.68/2.45
2.49/2.25
3.40/3.08
1.90/1.74
2.30/2.13
2.06/1.90
2.56/2.37
2.39/2.18
3.16/2.89
0.40/0.57
0.25/0.36
0.38/0.48
0.20/0.30
0.23/0.32
0.13/0.20
Typ.
—
1.36/1.10
2.20/1.80
1.65/1.33
2.80/2.20
2.47/1.95
4.20/3.20
2.68/2.41
3.47/3.08
2.98/2.66
3.96/3.49
3.63/3.15
5.09/4.41
2.63/2.38
3.30/2.97
2.89/2.61
3.69/3.30
3.39/2.99
4.65/4.07
3.06/2.71
3.83/3.37
3.67/2.98
4.32/3.78
4.06/3.50
5.50/4.73
3.00/2.69
3.65/3.24
3.28/2.33
4.04/3.59
3.80/3.18
5.03/4.37
0.72/0.97
0.43/0.61
0.59/0.81
0.34/0.50
0.40/0.55
0.23/0.34
Max.
Rise/Fall
60
2.10/1.70
3.50/2.70
2.64/2.10
4.40/3.30
3.99/3.10
6.56/4.86
4.25/3.74
5.50/4.77
4.74/4.13
6.27/5.37
5.73/4.84
8.06/6.75
4.06/3.63
5.14/4.51
4.49/3.97
5.76/5.01
5.28/4.53
7.28/6.13
4.97/4.30
6.18/5.30
5.46/4.72
6.98/5.92
6.57/5.49
8.88/7.37
4.76/4.18
5.79/5.02
5.21/4.54
6.43/5.54
6.05/5.14
8.02/6.72
1.2/1.5
0.72/0.95
0.98/1.27
0.56/0.72
0.66/0.87
0.38/0.52
Units Notes
%
—
ns
1
ns
ns
ns
1
ns
ns
ns
1
ns
ns
ns
1
ns
ns
ns
1
ns
ns
V/ns
2
V/ns
V/ns
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