MCIMX503CVM8B datasheet(40/134 Pages) FREESCALE

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i.MX50 Applications Processors for Consumer Products, Rev. 2

Freescale Semiconductor

Electrical Characteristics

4.5

I/O AC Parameters

The load circuit and output transition time waveforms are shown in Figure 4 and Figure 5. The AC

electrical characteristics for slow and fast I/O are presented in the Table 26 and Table 27, respectively. Note

that the fast or slow I/O behavior is determined by the appropriate control bit in the IOMUX control

registers.

Figure 4. Load Circuit for Output

Figure 5. Output Transition Time Waveform

4.5.1

GPIO I/O Slow AC Parameters

Table 26 shows the AC parameters for GPIO slow I/O.

Table 26. GPIO I/O Slow AC Parameters

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

Output Pad Transition Times (Max Drive)

tr, tf

15 pF

35 pF

1.91/1.52

3.07/2.65

Output Pad Transition Times (High Drive)

tr, tf

15 pF

35 pF

2.22/1.81

3.81/3.42

Output Pad Transition Times (Medium Drive)

tr, tf

15 pF

35 pF

2.88/2.42

5.43/5.02

Output Pad Transition Times (Low Drive)

tr, tf

15 pF

35 pF

4.94/4.50

10.55/9.70

Output Pad Slew Rate (Max Drive)1

tps

15 pF

35 pF

0.5/0.65

0.32/0.37

V/ns

Output Pad Slew Rate (High Drive)

tps

15 pF

35 pF

0.43/0.54

0.26/0.41

V/ns

Output Pad Slew Rate (Medium Drive)

tps

15 pF

35 pF

0.34/0.41

0.18/0.2

V/ns

Output Pad Slew Rate (Low Drive)

tps

15 pF

35 pF

0.20/0.22

0.09/0.1

V/ns

Output Pad di/dt (Max Drive)

tdit

mA/ns

Test point

From output

CL includes package, probe and fixture capacitance

Under test

NVCC

20%

80%

20%

Output (at I/O)

MCIMX503CVM8B 数据表(PDF) 40 Page - Freescale Semiconductor, Inc

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