- 您现在的位置：买卖IC网 > PDF目录45363 > MPC8349ECVVAGFB (FREESCALE SEMICONDUCTOR INC) 32-BIT, 400 MHz, MICROPROCESSOR, PBGA672 PDF资料下载
参数资料
| 型号： | MPC8349ECVVAGFB |
| 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, PBGA672 |
| 封装： | 35 X 35 MM, 1.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, TBGA-672 |
| 文件页数： | 80/87页 |
| 文件大小： | 1037K |
| 代理商： | MPC8349ECVVAGFB |
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页当前第80页第81页第82页第83页第84页第85页第86页第87页
MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 12
Freescale Semiconductor
81
System Design Information
have a low ESR (equivalent series resistance) rating to ensure the quick response time. They should also
be connected to the power and ground planes through two vias to minimize inductance. Suggested bulk
capacitors are 100–330 F (AVX TPS tantalum or Sanyo OSCON).
21.4
Connection Recommendations
To ensure reliable operation, 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 MPC8349EA.
21.5
Output Buffer DC Impedance
The MPC8349EA 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 42). 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.
Figure 42. Driver Impedance Measurement
Two measurements give the value of this resistance and the strength of the driver current source. First, the
output voltage is measured while driving logic 1 without an external differential termination resistor. The
measured voltage is V1 = Rsource × Isource. Second, the output voltage is measured while driving logic 1
with an external precision differential termination resistor of value Rterm. The measured voltage is
OVDD
OGND
RP
RN
Pad
Data
SW1
SW2
相关PDF资料 |
PDF描述 |
|---|---|
| MPC8349CVVAGFB | 32-BIT, 400 MHz, MICROPROCESSOR, PBGA672 |
| MPC8349ECZUALDB | 32-BIT, 667 MHz, MICROPROCESSOR, PBGA672 |
| MPC8349CVVALFB | 32-BIT, 667 MHz, MICROPROCESSOR, PBGA672 |
| MPC8349VVAGDB | 32-BIT, 400 MHz, MICROPROCESSOR, PBGA672 |
| MPC8349EVVAGFB | 32-BIT, 400 MHz, MICROPROCESSOR, PBGA672 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC8349ECVVAJDB | 功能描述:微处理器 - MPU 8349 TBGA 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 |
| MPC8349ECVVAJFB | 功能描述:微处理器 - MPU 8349 TBGA NO-PB W/ ENCR 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 |
| MPC8349ECVVALDB | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications |
| MPC8349ECVVALFB | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications |
| MPC8349ECZUAGDB | 功能描述:微处理器 - MPU 8349 TBGA W/ ENCRYP 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 |
发布紧急采购，3分钟左右您将得到回复。