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    參數(shù)資料
    型號(hào)： MPC8321ECVRADDCA
    廠(chǎng)商： FREESCALE SEMICONDUCTOR INC
    元件分類(lèi)： 微控制器/微處理器
    英文描述： 32-BIT, 266 MHz, RISC PROCESSOR, PBGA516
    封裝： 27 X 27 MM, 2.25 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, PBGA-516
    文件頁(yè)數(shù)： 75/82頁(yè)
    文件大?。?/td> 1059K
    代理商： MPC8321ECVRADDCA
    MPC8323E PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 3
    Freescale Semiconductor
    77
    System Design Information
    Each circuit should be placed as close as possible to the specific AVDD pin being supplied to minimize
    noise coupled from nearby circuits. It should be possible to route directly from the capacitors to the AVDD
    pin, which is on the periphery of package, without the inductance of vias.
    Figure 44 shows the PLL power supply filter circuit.
    Figure 44. PLL Power Supply Filter Circuit
    24.3
    Decoupling Recommendations
    Due to large address and data buses, and high operating frequencies, the MPC8323E 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 MPC8323E system, and the
    MPC8323E 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, OVDD, and GVDD pins of the
    MPC8323E. These decoupling capacitors should receive their power from separate VDD, OVDD, GVDD,
    and GND 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, OVDD, and GVDD 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—100–330 F (AVX TPS tantalum or Sanyo OSCON).
    24.4
    Connection Recommendations
    To ensure reliable operation, it is highly recommended to connect unused inputs to an appropriate signal
    level. Unused active low inputs should be tied to OVDD, or GVDD as required. Unused active high inputs
    should be connected to GND. All NC (no-connect) signals must remain unconnected.
    Power and ground connections must be made to all external VDD, GVDD, OVDD, and GND pins of the
    MPC8323E.
    24.5
    Output Buffer DC Impedance
    The MPC8323E drivers are characterized over process, voltage, and temperature. For all buses, the driver
    is a push-pull single-ended driver type (open drain for I2C).
    To measure Z0 for the single-ended drivers, an external resistor is connected from the chip pad to OVDD
    or GND. Then, the value of each resistor is varied until the pad voltage is OVDD/2 (see Figure 45). The
    VDD
    AVDD (or L2AVDD)
    2.2 F
    GND
    Low ESL Surface Mount Capacitors (<0.5 nH)
    10
    Ω
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    參數(shù)描述
    MPC8321ECVRAFDC 功能描述:微處理器 - MPU 8321 NOPB PBGA W/ ENCR RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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
    MPC8321ECZQADDC 功能描述:微處理器 - MPU 8321 PBGA W/ ENCR RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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
    MPC8321ECZQAFDC 功能描述:微處理器 - MPU 8321 PBGA W/ ENCR RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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
    MPC8321EVRADDC 功能描述:微處理器 - MPU 8321 NOPB PBGA W/ ENCR RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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
    MPC8321EVRAFDC 功能描述:微處理器 - MPU 8321 NOPB PBGA W/ ENCR RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線(xiàn)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
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