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MPC7455

RISC Microprocessor Hardware Specifications

Freescale Semiconductor 

Freescale Semiconductor

Technical Data

MPC7455EC

Rev. 4.1, 02/2005

MPC7455

RISC Microprocessor

Hardware Specifications

The MPC7455 and MPC7445 are implementations of the

PowerPC™ microprocessor family of reduced instruction set

computer (RISC) microprocessors. This document is primarily

concerned with the MPC7455; however, unless otherwise noted,

all information here also applies to the MPC7445. This document

describes pertinent electrical and physical characteristics of the

MPC7455. For functional characteristics of the processor, refer to

the MPC7450 RISC Microprocessor Family User’s Manual. To

locate any published updates for this document, refer to the

website at http://www.freescale.com.

1 Overview

The MPC7455 is the third implementation of the fourth generation

(G4) microprocessors from Freescale. The MPC7455 implements

the full PowerPC 32-bit architecture and is targeted at networking

and computing systems applications. The MPC7455 consists of a

processor core, a 256-Kbyte L2, and an internal L3 tag and

controller which support a glueless backside L3 cache through a

dedicated high-bandwidth interface. The MPC7445 is identical to

the MPC7455 except it does not support the L3 cache interface.

Figure 1 shows a block diagram of the MPC7455.

Contents

1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3. Comparison with the MPC7400, MPC7410,

MPC7450, MPC7451, and MPC7441 . . . . . . . . . . . . . 7

4. General Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5. Electrical and Thermal Characteristics . . . . . . . . . . . 10

6. Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7. Pinout Listings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8. Package Description . . . . . . . . . . . . . . . . . . . . . . . . . 41

9. System Design Information . . . . . . . . . . . . . . . . . . . 45

10. Document Revision History . . . . . . . . . . . . . . . . . . . 59

11. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . 60

© Freescale Semiconductor, Inc., 2005. All rights reserved.

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