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MPC7457EC Datasheet

  • MPC7457EC

  • RISC Microprocessor Hardware Specifications

  • 68頁

  • FREESCALE

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Freescale Semiconductor
Technical Data
MPC7457EC
Rev. 5, 09/2004
MPC7457
RISC Microprocessor
Hardware Specifications
This hardware specification is primarily concerned with the
MPC7457; however, unless otherwise noted, all information here
also applies to the MPC7447. The MPC7457 and MPC7447 are
implementations of the PowerPC鈩?microprocessor family of
reduced instruction set computer (RISC) microprocessors. This
hardware specification describes pertinent electrical and physical
characteristics of the MPC7457. For functional characteristics of
the processor, refer to the
MPC7450 RISC Microprocessor Family
User鈥檚 Manual.
To locate any published updates for this hardware specification,
refer to the website at http://www.Freescale.com.
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Comparison with the MPC7455, MPC7445,
MPC7450, MPC7451, and MPC7441 . . . . . . . . . . . . 7
General Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical and Thermal Characteristics . . . . . . . . . . . 10
Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Pinout Listings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Package Description . . . . . . . . . . . . . . . . . . . . . . . . . 41
System Design Information . . . . . . . . . . . . . . . . . . . 47
Document Revision History . . . . . . . . . . . . . . . . . . . 61
Part Numbering and Marking . . . . . . . . . . . . . . . . . . 63
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1
Overview
The MPC7457 is the fourth implementation of the fourth
generation (G4) microprocessors from Freescale. The MPC7457
implements the full PowerPC 32-bit architecture and is targeted at
networking and computing systems applications. The MPC7457
consists of a processor core, a 512-Kbyte L2, and an internal L3
tag and controller that support a glueless backside L3 cache
through a dedicated high-bandwidth interface. The MPC7447 is
identical to the MPC7457 except that it does not support the L3
cache interface.
Figure 1
shows a block diagram of the MPC7457. The core is a
high-performance superscalar design supporting a
double-precision floating-point unit and a SIMD multimedia unit.
漏 Freescale Semiconductor, Inc., 2004. All rights reserved.

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