MPC8555CPXAPF datasheet(9/88 Pages) FREESCALE

9 / 88 page

MPC8555E PowerQUICC™ III Integrated Communications Processor Hardware Specifications, Rev. 4

Freescale Semiconductor

Electrical Characteristics

2.1

Overall DC Electrical Characteristics

This section covers the ratings, conditions, and other characteristics.

2.1.1

Absolute Maximum Ratings

Table 1 provides the absolute maximum ratings.

Table 1. Absolute Maximum Ratings 1

Characteristic

Symbol

Max Value

Unit

Notes

Core supply voltage

VDD

–0.3 to 1.32

0.3 to 1.43 (for 1 GHz only)

PLL supply voltage

AVDD

–0.3 to 1.32

0.3 to 1.43 (for 1 GHz only)

DDR DRAM I/O voltage

GVDD

–0.3 to 3.63

Three-speed Ethernet I/O, MII management voltage

LVDD

–0.3 to 3.63

–0.3 to 2.75

CPM, PCI, local bus, DUART, system control and power

management, I2C, and JTAG I/O voltage

OVDD

–0.3 to 3.63

Input voltage

DDR DRAM signals

MVIN

–0.3 to (GVDD + 0.3)

2, 5

DDR DRAM reference

MVREF

–0.3 to (GVDD + 0.3)

2, 5

Three-speed Ethernet signals

LVIN

–0.3 to (LVDD + 0.3)

4, 5

CPM, Local bus, DUART,

SYSCLK, system control and

power management, I2C, and

JTAG signals

OVIN

–0.3 to (OVDD + 0.3)1

PCI

OVIN

–0.3 to (OVDD + 0.3)

Storage temperature range

TSTG

–55 to 150

•C

Notes:

1. Functional and tested operating conditions are given in Table 2. Absolute maximum ratings are stress ratings only, and

functional operation at the maximums is not guaranteed. Stresses beyond those listed may affect device reliability or cause

permanent damage to the device.

2. Caution: MVIN must not exceed GVDD by more than 0.3 V. This limit may be exceeded for a maximum of 20 ms during

power-on reset and power-down sequences.

3. Caution: OVIN must not exceed OVDD by more than 0.3 V. This limit may be exceeded for a maximum of 20 ms during

power-on reset and power-down sequences.

4. Caution: LVIN must not exceed LVDD by more than 0.3 V. This limit may be exceeded for a maximum of 20 ms during

power-on reset and power-down sequences.

5. (M,L,O)VIN and MVREF may overshoot/undershoot to a voltage and for a maximum duration as shown in Figure 2.

6. OVIN on the PCI interface may overshoot/undershoot according to the PCI Electrical Specification for 3.3-V operation, as

shown in Figure 3.

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