MPC852T datasheet(8/80 Pages) FREESCALE

8 / 80 page

MPC852T PowerQUICC™ Hardware Specifications, Rev. 4

Freescale Semiconductor

Power Dissipation

Table 4 provides power dissipation information. The modes are 1:1, where CPU and bus speeds are equal,

and 2:1 mode, where CPU frequency is twice bus speed.

DC Characteristics

Table 5 provides the DC electrical characteristics for the MPC852T.

Table 4. Power Dissipation (PD)

Die Revision

Bus Mode

Frequency

(MHz)

Typical1

1 Typical power dissipation is measured at 1.9 V.

Maximum2

2 Maximum power dissipation at V

DDL and VDDSYN is at 1.9 V. and VDDH is at 3.465 V.

NOTE

Values in Table 4 represent VDDL-based power

dissipation, and do not include I/O power dissipation

over VDDH. I/O power dissipation varies widely by

application that buffer current can cause, depending on

external circuitry.

The VDDSYN power dissipation is negligible.

Unit

1:1

110

140

150

180

2:1

140

160

170

200

100

210

250

Table 5. DC Electrical Specifications

Characteristic

Symbol

Min

Max

Unit

Operating voltage

VDDH

3.135

3.465

VDDL

1.7

1.9

VDDSYN

1.7

1.9

Difference between

VDDL to VDDSYN

—100

Input high voltage (all inputs except PA[0:3], PA[8:11],

PB15, PB[24:25]; PB[28:31], PC[4:7], PC[12:13], PC15,

PD[3:15], TDI, TDO, TCK, TRST, TMS, MII_TXEN,

MII_MDIO)1

VIH

2.0

3.465

Input low voltage

VIL

GND

0.8

EXTAL, EXTCLK input high voltage

VIHC

0.7

× VDDH

VDDH

MPC852T 数据表(PDF) 8 Page - Freescale Semiconductor, Inc

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