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参数资料
| 型号： | MPC8343CZQAGDX |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 400 MHz, MICROPROCESSOR, PBGA620 |
| 封装： | 29 X 29 MM, 2.46 MM HEIGHT, 1 MM PITCH, PLASTIC, BGA-620 |
| 文件页数： | 82/92页 |
| 文件大小： | 987K |
| 代理商： | MPC8343CZQAGDX |
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MPC8343E PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 6
Freescale Semiconductor
83
System Design Information
20.3
Decoupling Recommendations
Due to large address and data buses, and high operating frequencies, the MPC8343E 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 MPC8343E system, and the
MPC8343E 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, GVDD, and LVDD pins
of the MPC8343E. These decoupling capacitors should receive their power from separate VDD, OVDD,
GVDD, LVDD, 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, GVDD, and LVDD 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).
20.4
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, GVDD, or LVDD 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, LVDD, OVDD, and GND pins of
the MPC8343E.
20.5
Output Buffer DC Impedance
The MPC8343E 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 35). The
output impedance is the average of two components, the resistances of the pull-up and pull-down devices.
When data is held high, SW1 is closed (SW2 is open) and RP is trimmed until the voltage at the pad equals
OVDD/2. RP then becomes the resistance of the pull-up devices. RP and RN are designed to be close to each
other in value. Then, Z0 = (RP + RN)/2.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC8343EA | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:MPC8343EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications |
| MPC8343ECVRADDB | 功能描述:微处理器 - MPU 8347 PBGA NO-PB W/ ENC 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 |
| MPC8343ECVRAGD | 功能描述:IC MPU PWRQUICC II PRO 620-PBGA RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:MPC83xx 标准包装:1 系列:MPC85xx 处理器类型:32-位 MPC85xx PowerQUICC III 特点:- 速度:1.2GHz 电压:1.1V 安装类型:表面贴装 封装/外壳:783-BBGA，FCBGA 供应商设备封装:783-FCPBGA（29x29） 包装:托盘 |
| MPC8343ECVRAGDB | 功能描述:微处理器 - MPU 8347 PBGA NO-PB W/ ENC 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 |
| MPC8343ECZQADDB | 功能描述:微处理器 - MPU 8347 PBGA ENCRYP W/ PB 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 |
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