PCX7457VGU1250LC datasheet, PDF

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PCX7457VGU1250LC: DescriptionRISC Microprocessor, 32-Bit, 1250MHz, CMOS, CBGA483, 29 X 29 MM, 3.22 MM HEIGHT, 1.27 MM PITCH, CERAMIC, BGA-483; CategoryThe embedded processor and controller Microcontrollers and processors; File Size667KB，64 Pages; ManufacturerAtmel (Microchip)

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PCX7457VGU1250LC Overview

RISC Microprocessor, 32-Bit, 1250MHz, CMOS, CBGA483, 29 X 29 MM, 3.22 MM HEIGHT, 1.27 MM PITCH, CERAMIC, BGA-483

PCX7457VGU1250LC Parametric

Parameter Name	Attribute value
Maker	Atmel (Microchip)
Parts packaging code	BGA
package instruction	BGA,
Contacts	483
Reach Compliance Code	unknown
ECCN code	3A001.A.3
Other features	ALSO REQUIRES 1.8V OR 2.5V SUPPLY
Address bus width	36
bit size	32
boundary scan	YES
maximum clock frequency	167 MHz
External data bus width	64
Format	FLOATING POINT
Integrated cache	YES
JESD-30 code	S-CBGA-B483
length	29 mm
low power mode	YES
Number of terminals	483
Package body material	CERAMIC, METAL-SEALED COFIRED
encapsulated code	BGA
Package shape	SQUARE
Package form	GRID ARRAY
Certification status	Not Qualified
Maximum seat height	3.2 mm
speed	1250 MHz
Maximum supply voltage	1.35 V
Minimum supply voltage	1.25 V
Nominal supply voltage	1.3 V
surface mount	YES
technology	CMOS
Terminal form	BALL
Terminal pitch	1.27 mm
Terminal location	BOTTOM
width	29 mm
uPs/uCs/peripheral integrated circuit type	MICROPROCESSOR, RISC

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Features

•

3000 Dhrystone 2.1 MIPS at 1.3 GHz

Selectable Bus Clock (30 CPU Bus Dividers up to 28x)

13 Selectable Core-to-L3 Frequency Divisors

Selectable MPx/60x Interface Voltage (1.8V, 2.5V)

Selectable L3 Interface of 1.8V or 2.5V

Typical 12.6W at 1 GHz at V

= 1.3V; 8.3W at 1 GHz at V

= 1.1V, Full Operating

Conditions

Nap, Doze and Sleep Modes for Power Saving

Superscalar (Four Instructions Fetched Per Clock Cycle)

4 GB Direct Addressing Range

Virtual Memory: 4 Hexabytes (2

)

64-bit Data and 36-bit Address Bus Interface

Integrated L1: 36 KB Instruction and 32 KB Data Cache

Integrated L2: 512 KB

11 Independent Execution Units and Three Register Files

Write-back and Write-through Operations

INT

Max = 1 GHz (1.2 GHz to be Confirmed)

BUS

Max = 133 MHz/166 MHz

PowerPC

7447/7457

PC7447/57

Preliminary

Description

This document is primarily concerned with the PowerPC PC7457; however, unless

otherwise noted, all information here also applies to the PC7447. The PC7457 and

PC7447 are implementations of the PowerPC microprocessor family of reduced

instruction set computer (RISC) microprocessors. This document describes pertinent

electrical and physical characteristics of the PC7457.

The PC7457 is the fourth implementation of the fourth generation (G4) microproces-

sors from Freescale. The PC7457 implements the full PowerPC 32-bit architecture

and is targeted at networking and computing systems applications. The PC7457 con-

sists of a processor core, a 512 Kbyte L2, and an internal L3 tag and controller which

support a glueless backside L3 cache through a dedicated high-bandwidth interface.

The PC7447 is identical to the PC7457 except it does not support the L3 cache

interface.

The core is a high-performance superscalar design supporting a double-precision

floating-point unit and a SIMD multimedia unit. The memory storage subsystem sup-

ports the MPX bus interface to main memory and other system resources. The L3

interface supports 1, 2, or 4M bytes of external SRAM for L3 cache and/or private

memory data. For systems implementing 4M bytes of SRAM, a maximum of 2M bytes

may be used as cache; the remaining 2M bytes must be private memory.

Note that the PC7457 is a footprint-compatible, drop-in replacement in a PC7455

application if the core power supply is 1.3V.

Rev. 5345C–HIREL–07/05

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