MPC8540CPX667JC datasheet(48/104 Pages) FREESCALE

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MPC8540 Integrated Processor Hardware Specifications, Rev. 4

Freescale Semiconductor

I2C

Figure 28 provides the test access port timing diagram.

Figure 28. Test Access Port Timing Diagram

11 I2C

This section describes the DC and AC electrical characteristics for the I2C interface of the MPC8540.

11.1 I2C DC Electrical Characteristics

Table 39 provides the DC electrical characteristics for the I2C interface of the MPC8540.

Table 39. I2C DC Electrical Characteristics

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

Parameter

Symbol

Min

Max

Unit

Notes

Input high voltage level

VIH

0.7

× OV

OVDD+ 0.3

Input low voltage level

VIL

–0.3

0.3

× OV

Low level output voltage

VOL

00.2

× OV

Pulse width of spikes which must be suppressed

by the input filter

tI2KHKL

050

Input current each I/O pin (input voltage is

between 0.1

× OV

DD and 0.9 × OVDD(max)

–10

μA3

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 MPC8540 Integrated Processor Preliminary 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.

VM = Midpoint Voltage (OVDD/2)

tJTIVKH

tJTIXKH

JTAG

External Clock

Output Data Valid

tJTKLOX

tJTKLOZ

tJTKLOV

Input

Data Valid

Output Data Valid

TDI, TMS

TDO

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