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參數(shù)資料
| 型號： | MPC8313VRAGDB |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 400 MHz, MICROPROCESSOR, PBGA516 |
| 封裝： | 27 X 27 MM, 2.25 MM HEIGHT, 1 MM PITCH, LEAD FREE, TEPBGAII-516 |
| 文件頁數(shù)： | 89/100頁 |
| 文件大?。?/td> | 1247K |
| 代理商： | MPC8313VRAGDB |
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MPC8313E PowerQUICC II Pro Processor Hardware Specifications, Rev. 3
Freescale Semiconductor
89
System Design Information
The SDAVDD signal provides 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 like the one shown in Figure 59.
For maximum effectiveness, the filter circuit should be placed as closely as possible to the SDAVDD ball
to ensure it filters out as much noise as possible. The ground connection should be near the SDAVDD ball.
The 0.003-F capacitor is closest to the ball, followed by the two 2.2-F capacitors, and finally the 1-
Ω
resistor to the board supply plane. The capacitors are connected from traces from SDAVDD 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 59. SerDes PLL Power Supply Filter Circuit
Note the following:
SDAVDD should be a filtered version of XCOREVDD.
Output signals on the SerDes interface are fed from the XPADVDD power plane. Input signals and
sensitive transceiver analog circuits are on the XCOREVDD supply.
Power: XPADVDD consumes less than 300 mW; XCOREVDD +SDAVDD consumes less than
750 mW.
22.3
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 MPC8313E system, and the
MPC8313E itself requires a clean, tightly regulated source of power. Therefore, it is recommended that
the system designer place at least one decoupling capacitor at each VDD, NVDD, GVDD, LVDD, LVDDA,
and LVDDB pin of the device. These decoupling capacitors should receive their power from separate VDD,
NVDD, GVDD, LVDD, LVDDA, LVDDB, and VSS power planes in the PCB, utilizing short traces to
minimize inductance. Capacitors may be placed directly under the device using a standard escape pattern.
Others may surround the part.
These capacitors should have a value of 0.01 or 0.1 F. Only ceramic SMT (surface mount technology)
capacitors should be used to minimize lead inductance, preferably 0402 or 0603 sizes.
In addition, it is recommended that there be several bulk storage capacitors distributed around the PCB,
feeding the VDD, NVDD, GVDD, LVDD, LVDDA, and LVDDB planes, to enable quick recharging of the
smaller chip capacitors. These bulk capacitors should have a low ESR (equivalent series resistance) rating
to ensure the quick response time necessary. They should also be connected to the power and ground
planes through two vias to minimize inductance. Suggested bulk capacitors—100 to 330 F (AVX TPS
tantalum or Sanyo OSCON). However, customers should work directly with their power regulator vendor
for best values and types of bulk capacitors.
Note:
1. An 0805 sized capacitor is recommended for system initial bring-up.
XCOREVDD
SDAVDD
SDAVSS
2.2 F1
0.003 F
1.0
Ω
2.2 F1
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相關(guān)代理商/技術(shù)參數(shù) |
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| MPC8313VRAGDC | 功能描述:微處理器 - MPU 8313 REV2.2 NO ENC 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 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型: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 |
| MPC8313VRGDD | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Processor Hardware Specifications |
| MPC8313VRGDDA | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Processor Hardware Specifications |
| MPC8313VRGDDB | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Processor Hardware Specifications |
| MPC8313VRGDF | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Processor Hardware Specifications |
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