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參數(shù)資料
| 型號(hào)： | MC8640DHX1250HE |
| 廠商： | Freescale Semiconductor |
| 文件頁(yè)數(shù)： | 21/130頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DUAL CORE PROCESSOR 1023-CBGA |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | MPC86xx |
| 處理器類(lèi)型： | 32-位 MPC86xx PowerPC |
| 速度： | 1.25GHz |
| 電壓： | 1.05V |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 1023-BCBGA，F(xiàn)CCBGA |
| 供應(yīng)商設(shè)備封裝： | 1023-FCCBGA（33x33） |
| 包裝： | 托盤(pán) |
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MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
Freescale Semiconductor
117
System Design Information
Figure 64. MPC8640 PLL Power Supply Filter Circuit (for cores)
The AVDD_SRDSn signals provide power for the analog portions of the SerDes PLL. To ensure stability
of the internal clock, the power supplied to the PLL is filtered using a circuit similar to the one shown in
following figure. For maximum effectiveness, the filter circuit is placed as closely as possible to the
AVDD_SRDSn balls to ensure it filters out as much noise as possible. The ground connection should be
near the AVDD_SRDSn balls. The 0.003-F capacitor is closest to the balls, followed by the two 2.2-F
capacitors, and finally the 1-
Ω resistor to the board supply plane. The capacitors are connected from
AVDD_SRDSn to the ground plane. Use ceramic chip capacitors with the highest possible self-resonant
frequency. All traces should be kept short, wide, and direct.
Figure 65. SerDes PLL Power Supply Filter
Note the following:
AVDD_SRDSn should be a filtered version of SVDD.
Signals on the SerDes interface are fed from the SVDD power plan.
20.2.2
PLL Power Supply Sequencing
20.3
Decoupling Recommendations
Due to large address and data buses, and high operating frequencies, the device can generate transient
power surges and high frequency noise in its power supply, especially while driving large capacitive loads.
This noise must be prevented from reaching other components in the MPC8640 system, and the device
itself requires a clean, tightly regulated source of power. Therefore, it is recommended that the system
VDD_Core0/1
AVDD_Core0/1
2.2 F
GND
Low ESL Surface Mount Capacitors
10
Ω
Filter Circuit (should not be used for Single core device)
Note: For single core device the filter circuit (in the dashed box) should
be removed and AVDD_Core1 should be tied to ground with a weak
(2–10 k
Ω) pull-down resistor.
2.2 F 1
0.003 F
GND
1.0
Ω
AVDD_SRDSn
1. An 0805 sized capacitor is recommended for system initial bring-up.
SVDD
2.2 F 1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC8640DHX1250N | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications Addendum for the MC8640xTxxyyyyaC Series |
| MC8640DTHX1000H | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications |
| MC8640DTHX1000HC | 功能描述:微處理器 - MPU G8 REV2.1 1.05V -40/105C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類(lèi)型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| MC8640DTHX1000HE | 功能描述:微處理器 - MPU G8 REV 3.0 1.05V -40/105C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類(lèi)型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| MC8640DTHX1000N | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications Addendum for the MC8640xTxxyyyyaC Series |
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