MPC8280CVRT datasheet(57/80 Pages) FREESCALE

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MPC8280 PowerQUICC II™ Family Hardware Specifications, Rev. 1.7

Freescale Semiconductor

Pinout

Symbols used in Table 21 are described in Table 22.

PCI_MODE 4

AF25

SPARE63

No connect 5

AA1, AG4

I/O power

AG21, AG14, AG8, AJ1, AJ2,

AH1, AH2, AG3, AF4, AE5, AC27,

Y27, T27, P27, K26, G27, AE25,

AF26, AG27, AH28, AH29, AJ28,

AJ29, C7, C14, C16, C20, C23,

E10, A28, A29, B28, B29, C27,

D26, E25, H3, M4, T3, AA4, A1,

A2, B1, B2, C3, D4, E5

Core power

U28, U29, K28, K29, A9, A19,

B19, M1, M2, Y1, Y2, AC1, AC2,

AH19, AJ19, AH10, AJ10, AJ5

Ground

AA5, AB1 6, AB2 7, AF21, AF14,

AF8, AE7, AF11, AE17, AE23,

AC26, AB25, Y26, V25, T26, R25,

P26, M25, K27, H25, G26, D7,

D10, D14, D16, D20, D23, C9,

E11, E13, E15, E19, E22, B3, G5,

H4, K5, M3, P5, T4, Y5, AA2, AC3

Should be tied to VDDH via a 2K

Ω external pull-up resistor.

The default configuration of the CPM pins (PA[0–31], PB[4–31], PC[0–31], PD[4–31]) is input. To prevent excessive

DC current, it is recommended to either pull unused pins to GND or VDDH, or to configure them as outputs.

Must be pulled down or left floating.

If PCI is not desired, must be pulled up or left floating.

Sphere is not connected to die.

GNDSYN (AB1): This pin exists as a separate ground signal in MPC826x(A) devices; it does not exist as a separate

ground signal on the MPC8280. New designs must connect AB1 to GND and follow the suggestions in Section 4.6,

“Layout Practices.” Old designs in which the MPC8280 is used as a drop-in replacement can leave the pin connected

to GND with the noise filtering capacitors.

XFC (AB2) pin: This pin is used in MPC826x(A) devices; it is not used in MPC8280 because there is no need for

external capacitor to operate the PLL. New designs should connect AB2 (XFC) pin to GND. Old designs in which the

MPC8280 is used as a drop-in replacement can leave the pin connected to the current capacitor.

Table 22. Symbol Legend

Symbol

Meaning

OVERBAR

Signals with overbars, such as TA, are active low.

UTM

Indicates that a signal is part of the UTOPIA master interface.

UTS

Indicates that a signal is part of the UTOPIA slave interface.

Table 21. MPC8280 and MPC8270 (ZU Package) Pinout List (continued)

Pin Name

Ball

MPC8280/MPC8270

MPC8280 only

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