IMX28CEC datasheet(27/70 Pages) FREESCALE

27 / 70 page

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

Freescale Semiconductor

Table 30 shows the CLK-type GPIO AC timing and parameters.

Output pad slew rate

(low drive)

tps

1.7~1.9V

10pF

1.44

1.51

0.59

0.63

—

1.7~1.9V

20pF

0.84

0.96

0.35

0.40

—

1.7~1.9V

50pF

0.36

0.46

0.16

0.19

—

3.0~3.6V

10pF

1.48

1.39

0.59

0.60

—

3.0~3.6V

20pF

0.88

0.82

0.37

0.36

—

3.0~3.6V

50pF

0.39

0.36

0.17

0.16

—

Input pad average

hysteresis

tih

1.7 V–1.9 V

—

100

—

3.0 V–3.6 V

—

100

—

Table 30. CLK-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

0.48

0.52

1.08

1.12

—

1.7~1.9V

20pF

0.72

0.74

1.56

—

1.7~1.9V

50pF

1.41

1.28

3.04

2.7

—

3.0~3.6V

10pF

0.61

0.57

1.25

1.12

—

3.0~3.6V

20pF

0.85

1.73

1.63

—

3.0~3.6V

50pF

1.56

1.63

3.13

3.08

—

Output pad transition

times (medium drive)

tpr

1.7~1.9V

10pF

0.76

1.67

1.62

—

1.7~1.9V

20pF

1.22

1.14

2.64

2.41

—

1.7~1.9V

50pF

2.66

2.2

5.61

4.62

—

3.0~3.6V

10pF

0.9

0.89

1.83

1.72

—

3.0~3.6V

20pF

1.37

1.41

2.77

2.69

—

3.0~3.6V

50pF

2.85

3.03

5.59

5.72

—

Output pad slew rate

(maximum drive)

tps

1.7~1.9V

10pF

2.38

2.19

0.94

0.91

—

1.7~1.9V

20pF

1.58

1.54

0.65

—

1.7~1.9V

50pF

0.81

0.89

0.34

0.38

—

3.0~3.6V

10pF

3.54

3.79

1.44

1.61

—

3.0~3.6V

20pF

2.54

1.04

1.10

—

3.0~3.6V

50pF

1.38

1.33

0.58

—

Table 29. F-type GPIO (continued)

Parameters

Symbol

Test Voltage

Test Capacitance Min Rise/Fall Max Rise/Fall

Units

Notes

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