MPC8280CVRT datasheet(72/80 Pages) FREESCALE

72 / 80 page

MPC8280 PowerQUICC II™ Family Hardware Specifications, Rev. 1.7

Freescale Semiconductor

Pinout

VCCSYN1

CLKIN2

K21

SPARE4 3

C14

PCI_MODE 4

AD24

SPARE63

B15

No connect 5

E17, C23

I/O power

E6, F6, H6, L5, L6, P6, T6, U6, V5,

Y5, AA6, AA8, AA10, AA11,

AA14, AA16, AA17, AB19, AB20,

W21, U21, T21, P21, N21, M22,

J22, H21, F21, F19, F17, E16,

F14, E13, E12, F10, E10, E9

Core Power

L3, V4, W3, AC11, AD11, AB15,

U25, T24, J24, H25, F23, B19,

D17, C17, D10, C10

Ground

B18 6, A18 7, A2, B1, B2, A5, C5,

C18, D4, D6, G2, L4, P1, R1, R4,

AC4, AE7, AC23, Y25, N24, J23,

A23, D23, D20, E18, A13, A16,

K10, K11, K12, K13, K14, K15,

K16, K17, L10, L11, L12, L13,

L14, L15, L16, L17, M10, M11,

M12, M13, M14, M15, M16, M17,

N10, N11, N12, N13, N14, N15,

N16, N17, P10, P11, P12, P13,

P14, P15, P16, P17, R10,

R11,R12, R13, R14, R15, R16,

R17, T10, T11, T12, T13, T14,

T15, T16, T17, U10, U11, U12,

U13, U14, U15, U16, U17

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 (B18): This pin exists as a separate ground signal in MPC826x(A) devices; it does not exist as a separate

ground signal on the MPC8275/MPC8270. New designs must connect B18 to GND and follow the suggestions in

Section 4.6, “Layout Practices.” Old designs in which the MPC8275/MPC8270 is used as a drop-in replacement can

leave the pin connected to GND with the noise filtering capacitors.

XFC (A18) pin: This pin is used in MPC826x(A) devices; it is not used in MPC8275/MPC8270 because there is no

need for external capacitor to operate the PLL. New designs should connect A18 (XFC) pin to GND. Old designs in

which the MPC8275/MPC8270 is used as a drop-in replacement can leave the pin connected to the current capacitor.

Table 23. MPC8275 and MPC8270 (VR and ZQ Packages) Pinout List (continued)

Pin Name

Ball

MPC8275/MPC8270

MPC8275 only

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