MPC8548E_11 datasheet(56/143 Pages) FREESCALE

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MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 8

Freescale Semiconductor

GPOUT/GPIN

Figure 29 provides the AC test load for the I2C.

Figure 33. I2C AC Test Load

Figure 34 shows the AC timing diagram for the I2C bus.

Figure 34. I2C Bus AC Timing Diagram

14 GPOUT/GPIN

This section describes the DC and AC electrical specifications for the GPOUT/GPIN bus of the MPC8548E.

14.1

GPOUT/GPIN Electrical Characteristics

Table 47 and Table 48 provide the DC electrical characteristics for the GPOUT interface.

Table 47. GPOUT DC Electrical Characteristics (3.3 V DC)

Parameter

Symbol

Min

Max

Unit

Supply voltage 3.3 V

BVDD

3.13

3.47

High-level output voltage

(BVDD =min, IOH =–2 mA)

VOH

BVDD –0.2

—

Low-level output voltage

(BVDD =min, IOL =2 mA)

VOL

—0.2

Table 48. GPOUT DC Electrical Characteristics (2.5 V DC)

Parameter

Symbol

Min

Max

Unit

Supply voltage 2.5 V

BVDD

2.37

2.63

High-level output voltage

(BVDD =min, IOH = –1 mA)

VOH

2.0

BVDD + 0.3

Low-level output voltage

(BVDD min, IOL = 1 mA)

VOL

GND – 0.3

0.4

Output

Z0 = 50 Ω

OVDD/2

RL = 50 Ω

SDA

SCL

tI2CF

tI2SXKL

tI2CL

tI2CH

tI2DXKL,tI2OVKL

tI2DVKH

tI2SXKL

tI2SVKH

tI2KHKL

tI2PVKH

tI2CR

tI2CF

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