MPC8349EVVAJFB datasheet(10/87 Pages) FREESCALE

Part #	MPC8349EVVAJFB

Description	Integrated Host Processor Hardware Specifications

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 13

10

Freescale Semiconductor

Power Characteristics

supplies are stable and if the I/O voltages are supplied before the core voltage, there may be a period of

time that all input and output pins will actively be driven and cause contention and excessive current from

3A to 5A. In order to avoid actively driving the I/O pins and to eliminate excessive current draw, apply the

core voltage (VDD) before the I/O voltage (GVDD, LVDD, and OVDD) and assert PORESET before the

power supplies fully ramp up. In the case where the core voltage is applied first, the core voltage supply

must rise to 90% of its nominal value before the I/O supplies reach 0.7 V, see Figure 4.

Figure 4. Power Sequencing Example

I/O voltage supplies (GVDD, LVDD, and OVDD) do not have any ordering requirements with respect to one

another.

3

Power Characteristics

The estimated typical power dissipation for the MPC8349EA device is shown in Table 4.

Table 4. MPC8349EA Power Dissipation1

1 The values do not include I/O supply power (OV

DD, LVDD, GVDD) or AVDD. For I/O power values, see Table 5.

Core Frequency (MHz)

CSB Frequency (MHz)

Typical at TJ = 65 Typical

2, 3

Maximum4

Unit

TBGA

333

2.0

3.0

3.2

W

166

1.8

2.8

2.9

W

400

266

2.1

3.0

3.3

W

133

1.9

2.9

3.1

W

450

300

2.3

3.2

3.5

W

150

2.1

3.0

3.2

W

500

333

2.4

3.3

3.6

W

166

2.2

3.1

3.4

W

533

266

2.4

3.3

3.6

W

133

2.2

3.1

3.4

W

6675, 6

333

3.5

4.6

5

W

I/O Voltage (GVDD, LVDD, OVDD)

Core Voltage (VDD, AVDD)

90%

0.7 V

Time

Voltage

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