PPC8567CVTAQGGA datasheet(57/139 Pages) FREESCALE

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MPC8568E/MPC8567E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

11.2

I2C AC Electrical Specifications

Table 47 provides the AC timing parameters for the I2C interfaces.

Capacitance for each I/O pin

—10

—

Notes:

1. Output voltage (open drain or open collector) condition = 3 mA sink current.

2. Refer to the MPC8568E PowerQUICC III Integrated Communications Processor Reference Manual for information on the

digital filter used.

3. I/O pins will obstruct the SDA and SCL lines if OVDD is switched off.

Table 47. I2C AC Electrical Specifications

At recommended operating conditions with OVDD of 3.3V ± 5%. All values refer to VIH (min) and VIL (max) levels (see Table 46).

Parameter

Symbol 1

Min

Max

Unit

SCL clock frequency

fI2C

0400

kHz

Low period of the SCL clock

tI2CL

1.3

—

μs

High period of the SCL clock

tI2CH

0.6

—

μs

Setup time for a repeated START condition

tI2SVKH

0.6

—

μs

Hold time (repeated) START condition (after this period, the first clock

pulse is generated)

tI2SXKL

0.6

—

μs

Data setup time

tI2DVKH

100

—

Data input hold time:

CBUS compatible masters

I2C bus devices

tI2DXKL

—

0 2

—

μs

Data output delay time

tI2OVKL

—0.9 3

μs

Set-up time for STOP condition

tI2PVKH

0.6

—

μs

Bus free time between a STOP and START condition

tI2KHDX

1.3

—

μs

Noise margin at the LOW level for each connected device (including

hysteresis)

VNL

0.1

× OVDD

—V

Noise margin at the HIGH level for each connected device (including

hysteresis)

VNH

0.2

× OVDD

—V

Table 46. I2C DC Electrical Characteristics (continued)

At recommended operating conditions with OVDD of 3.3 V ± 5%.

Parameter

Symbol

Min

Max

Unit Notes

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