IMX28CEC datasheet(26/70 Pages) FREESCALE

26 / 70 page

i.MX28 Applications Processors Data Sheet for Consumer Products, Rev. 1

Freescale Semiconductor

Table 29 shows the F-type GPIO AC timing and parameters.

Table 29. F-type GPIO

Parameters

Symbol

Test Voltage

Test Capacitance Min Rise/Fall Max Rise/Fall

Units

Notes

Duty cycle

Fduty

—

Output pad transition

times (maximum

drive)

tpr

1.7~1.9V

10pF

0.58

0.61

1.29

1.33

—

1.7~1.9V

20pF

0.89

0.88

1.94

1.88

—

1.7~1.9V

50pF

1.83

1.59

3.88

3.39

—

3.0~3.6V

10pF

0.71

0.68

1.47

1.34

—

3.0~3.6V

20pF

1.02

1.04

2.11

1.99

—

3.0~3.6V

50pF

1.98

2.09

3.97

3.96

—

Output pad transition

times (medium drive)

tpr

1.7~1.9V

10pF

0.76

1.68

1.61

—

1.7~1.9V

20pF

1.23

1.13

2.63

2.38

—

1.7~1.9V

50pF

2.66

2.18

5.61

4.6

—

3.0~3.6V

10pF

0.9

0.88

1.84

1.7

—

3.0~3.6V

20pF

1.36

1.4

2.76

2.67

—

3.0~3.6V

50pF

2.85

3.02

5.59

5.67

—

Output pad transition

times (low drive)

tpr

1.7~1.9V

10pF

1.32

1.26

2.88

2.72

—

1.7~1.9V

20pF

2.27

1.98

4.84

4.23

—

1.7~1.9V

50pF

5.23

4.13

10.95

8.8

—

3.0~3.6V

10pF

1.46

1.55

3.05

—

3.0~3.6V

20pF

2.46

2.62

4.92

5.02

—

3.0~3.6V

50pF

5.56

5.96

10.78

11.22

—

Output pad slew rate

(maximum drive)

tps

1.7~1.9V

10pF

1.97

1.87

0.79

0.77

—

1.7~1.9V

20pF

1.28

1.30

0.53

0.54

—

1.7~1.9V

50pF

0.62

0.72

0.26

0.30

—

3.0~3.6V

10pF

3.04

3.18

1.22

1.34

—

3.0~3.6V

20pF

2.12

2.08

0.85

0.90

—

3.0~3.6V

50pF

1.09

1.03

0.45

—

Output pad slew rate

(medium drive)

tps

1.7~1.9V

10pF

1.50

0.61

0.63

—

1.7~1.9V

20pF

0.93

1.01

0.39

0.43

—

1.7~1.9V

50pF

0.43

0.52

0.18

0.22

—

3.0~3.6V

10pF

2.40

2.45

0.98

1.06

—

3.0~3.6V

20pF

1.59

1.54

0.65

0.67

—

3.0~3.6V

50pF

0.76

0.72

0.32

—

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