- 您现在的位置：买卖IC网 > PDF目录45277 > MC8640DHX1250HE (FREESCALE SEMICONDUCTOR INC) 32-BIT, 1250 MHz, MICROPROCESSOR, CBGA1023 PDF资料下载
参数资料
| 型号： | MC8640DHX1250HE |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 1250 MHz, MICROPROCESSOR, CBGA1023 |
| 封装： | 33 X 33 MM, CERAMIC, FCBGA-1023 |
| 文件页数： | 20/130页 |
| 文件大小： | 1495K |
| 代理商： | MC8640DHX1250HE |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页当前第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页
MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
116
Freescale Semiconductor
System Design Information
20 System Design Information
This section provides electrical and thermal design recommendations for successful application of the
MPC8640.
20.1
System Clocking
This device includes six PLLs, as follows:
The platform PLL generates the platform clock from the externally supplied SYSCLK input. The
frequency ratio between the platform and SYSCLK is selected using the platform PLL ratio
configuration bits as described in Section 18.2, “MPX to SYSCLK PLL Ratio.”
The dual e600 Core PLLs generate the e600 clock from the externally supplied input.
The local bus PLL generates the clock for the local bus.
There are two internal PLLs for the SerDes block.
20.2
Power Supply Design and Sequencing
This section describes the power supply design and sequencing.
20.2.1
PLL Power Supply Filtering
Each of the PLLs listed in Section 20.1, “System Clocking,” is provided with power through independent
power supply pins.
There are a number of ways to reliably provide power to the PLLs, but the recommended solution is to
provide independent filter circuits per PLL power supply as illustrated in Figure 64, one to each of the
AVDD type pins. By providing independent filters to each PLL the opportunity to cause noise injection
from one PLL to the other is reduced.
This circuit is intended to filter noise in the PLLs resonant frequency range from a 500 kHz to 10 MHz
range. It should be built with surface mount capacitors with minimum Effective Series Inductance (ESL).
Consistent with the recommendations of Dr. Howard Johnson in High Speed Digital Design: A Handbook
of Black Magic (Prentice Hall, 1993), multiple small capacitors of equal value are recommended over a
single large value capacitor.
Each circuit should be placed as close as possible to the specific AVDD type pin being supplied to minimize
noise coupled from nearby circuits. It should be possible to route directly from the capacitors to the AVDD
type pin, which is on the periphery of the footprint, without the inductance of vias.
Figure 63 and Figure 64 show the PLL power supply filter circuits for the platform and cores, respectively.
Figure 63. MPC8640 PLL Power Supply Filter Circuit (for platform and Local Bus)
2.2 F
GND
Low ESL Surface Mount Capacitors
10
Ω
AVDD_PLAT, AVDD_LB;
VDD_PLAT
相关PDF资料 |
PDF描述 |
|---|---|
| MC8640DHX1067NC | 32-BIT, 1067 MHz, MICROPROCESSOR, CBGA1023 |
| MC8640DTVU1000HE | 32-BIT, 1000 MHz, MICROPROCESSOR, CBGA1023 |
| MC8640DTHX1067NC | 32-BIT, 1067 MHz, MICROPROCESSOR, CBGA1023 |
| MC8640THX1250HC | 32-BIT, 1250 MHz, MICROPROCESSOR, CBGA1023 |
| MC8640DTVU1250HE | 32-BIT, 1250 MHz, MICROPROCESSOR, CBGA1023 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC8640DHX1250N | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications Addendum for the MC8640xTxxyyyyaC Series |
| MC8640DTHX1000H | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications |
| MC8640DTHX1000HC | 功能描述:微处理器 - MPU G8 REV2.1 1.05V -40/105C RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MC8640DTHX1000HE | 功能描述:微处理器 - MPU G8 REV 3.0 1.05V -40/105C RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MC8640DTHX1000N | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications Addendum for the MC8640xTxxyyyyaC Series |
发布紧急采购，3分钟左右您将得到回复。