PCIMX515CJM6C datasheet(32/184 Pages) FREESCALE

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i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 1

Freescale Semiconductor

Preliminary—Subject to Change Without Notice

Electrical Characteristics

3.5.2

Fast I/O AC Parameters

3.5.3

I2C AC Parameters

NOTE: See the errata for HS-I2C in i.MX51 Chip Errata document. The two standard I2C modules have

no errata

Figure 6 depicts the load circuit for output pads for standard- and fast-mode. Figure 7 depicts the output

pad transition time definition. Figure 6 depicts pull-up current source measurement for HS-mode. Figure 8

Output Pad di/dt (Low drive)

tdit

—

mA/ns

Input Transition Times1

trm

—

1 Hysteresis mode is recommended for inputs with transition times greater than 25 ns.

Table 25. Fast I/O AC Parameters

Parameter

Symbol

Test

Condition

Min Rise/Fall

Typ

Max Rise/Fall

Unit

Output Pad Transition Times (Max Drive)

tr, tf

15 pF

35 pF

—

1.429/1.275

2.770/2.526

Output Pad Transition Times (High

Drive)

tr, tf

15 pF

35 pF

—

1.793/1.607

3.565/3.29

Output Pad Transition Times (Medium

Drive)

tr, tf

15 pF

35 pF

—

2.542/2.257

5.252/4.918

Output Pad Transition Times (Low Drive)

tr, tf

15 pF

35 pF

—

4.641/4.456

10.699/10.0

Output Pad Slew Rate (Max Drive)

tps

15 pF

35 pF

0.69/0.78

0.36/0.39

——

V/ns

Output Pad Slew Rate (High Drive)

tps

15 pF

35 pF

0.55/0.62

0.28/0.30

——

V/ns

Output Pad Slew Rate (Medium Drive)

tps

15 pF

35 pF

0.39/0.44

0.19/0.20

——

V/ns

Output Pad Slew Rate (Low Drive)

tps

15 pF

35 pF

0.21/0.22

0.09/0.1

——

V/ns

Output Pad di/dt (Max Drive)

tdit

—

mA/ns

Output Pad di/dt (High Drive)

tdit

—

mA/ns

Output Pad di/dt (Medium drive)

tdit

—

mA/ns

Output Pad di/dt (Low drive)

tdit

—

mA/ns

Input Transition Times1

1 Hysteresis mode is recommended for inputs with transition time greater than 25 ns.

trm

—

Table 24. Slow I/O AC Parameters (continued)

Parameter

Symbol

Test Condition

Min Rise/Fall

Typ

Max Rise/Fall

Unit

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