- 您现在的位置：买卖IC网 > PDF目录98027 > MPC8240RZU266X (MOTOROLA INC) 32-BIT, 266 MHz, RISC PROCESSOR, PBGA352 PDF资料下载
参数资料
| 型号： | MPC8240RZU266X |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 266 MHz, RISC PROCESSOR, PBGA352 |
| 封装： | 35 X 35 MM, 1.65 MM HEIGHT, 1.27 MM PITCH, CAVITY DOWN, TBGA-352 |
| 文件页数： | 32/48页 |
| 文件大小： | 279K |
| 代理商： | MPC8240RZU266X |
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页当前第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
38
MPC8240 Hardware Specifications
MOTOROLA
PRELIMINARY (Rev 0.2) SUBJECT TO CHANGE WITHOUT NOTICE
the maximum potential difference on power-down.
Figure 21. Example Voltage Sequencing Circuits
1.7.3 Decoupling Recommendations
Due to the MPC8240s dynamic power management feature, large address and data buses, and high
operating frequencies, the MPC8240 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 MPC8240 system, and the MPC8240 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 pin of the MPC8240. It is also recommended that these
decoupling capacitors receive their power from separate Vdd, OVdd, GVdd, and GND power planes in the
PCB, utilizing short traces to minimize inductance. These capacitors should have a value of 0.1 F. Only
ceramic SMT (surface mount technology) capacitors should be used to minimize lead inductance,
preferably 0508 or 0603, oriented such that connections are made along the length of the part.
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 capacitors100330 F (AVX TPS tantalum or Sanyo OSCON).
1.7.4 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. 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, OVdd, GVdd, LVdd and GND pins of the
MPC8240.
The PCI_SYNC_OUT signal is intended to be routed halfway out to the PCI devices and then returned to
the PCI_SYNC_IN input of the MPC8240.
The SDRAM_SYNC_OUT signal is intended to be routed halfway out to the SDRAM devices and then
returned to the SDRAM_SYNC_IN input of the MPC8240. The trace length may be used to skew or adjust
the timing window as needed. See Motorola application note AN1794/D for more information on this topic.
1.7.5 Pull-up/Pull-down Resistor Requirements
The data bus input receivers are normally turned off when no read operation is in progress; therefore, they
do not require pull-up resistors on the bus. The data bus signals are: DH[031], DL[031], and PAR[07].
If the 32-bit data bus mode is selected, the input receivers of the unused data and parity bits (DL[031], and
3.3V
MUR420
1N5820
MUR420
1N5820
2.5V
+3.3V
+2.5V
Source
+5V
Source
5V
3.3V
2.5V
相关PDF资料 |
PDF描述 |
|---|---|
| MPC8245LZU300X | 32-BIT, 300 MHz, RISC PROCESSOR, PBGA352 |
| MPC8245LZU350X | 32-BIT, 350 MHz, RISC PROCESSOR, PBGA352 |
| MPC8270CVVQLDA | 32-BIT, 333 MHz, RISC PROCESSOR, PBGA480 |
| MPC8270CZUQLDA | 32-BIT, 333 MHz, RISC PROCESSOR, PBGA480 |
| MPC8321EVRADDC | 32-BIT, 266 MHz, RISC PROCESSOR, PBGA516 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC8241 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Intergrated Processor Hardware Specifications |
| MPC8241EC | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:MPC8241 Integrated Processor Hardware Specifications |
| MPC8241LVR166D | 功能描述:微处理器 - MPU INTEGRATED HOST PROC 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 |
| MPC8241LVR200D | 功能描述:微处理器 - MPU INTEGRATED HOST PROC 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 |
| MPC8241LVR266D | 功能描述:微处理器 - MPU INTEGRATED HOST PROC 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。