- 您现在的位置：买卖IC网 > PDF目录98027 > MPC8240LZU200X (MOTOROLA INC) 32-BIT, 200 MHz, RISC PROCESSOR, PBGA352 PDF资料下载
参数资料
| 型号： | MPC8240LZU200X |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 200 MHz, RISC PROCESSOR, PBGA352 |
| 封装： | 35 X 35 MM, 1.65 MM HEIGHT, 1.27 MM PITCH, TBGA-352 |
| 文件页数： | 28/58页 |
| 文件大小： | 596K |
| 代理商： | MPC8240LZU200X |
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页当前第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
34
MPC8240 Integrated Processor Hardware Specications
System Design Information
3
In PLL bypass mode, the PCI_SYNC_IN input signal clocks the internal processor directly, the peripheral
logic PLL is disabled, and the bus mode is set for 1:1 (PCI:Mem) mode operation. This mode is intended
for hardware modeling support. The AC timing specications given in this document do not apply in PLL
Bypass mode.
4
In clock off mode, no clocking occurs inside the MPC8240 regardless of the PCI_SYNC_IN input.
5
Limited due to maximum memory VCO = 225 MHz.
6
Limited due to minimum CPU VCO = 200 MHz.
7
Limited due to minimum memory VCO = 100 MHz.
8
For clarity, range values are shown rounded down to the nearest whole number (decimal place accuracy
removed).
1.7 System Design Information
This section provides electrical and thermal design recommendations for successful application of the
MPC8240.
1.7.1 PLL Power Supply Filtering
The AVdd, AVdd2, and LAVdd power signals are provided on the MPC8240 to provide power to the
peripheral logic/memory bus PLL, the 603e processor PLL, and the SDRAM clock delay-locked loop
(DLL), respectively. To ensure stability of the internal clocks, the power supplied to the AVdd, and AVdd2,
and LAVdd input signals should be ltered of any noise in the 500kHz to 10MHz resonant frequency range
of the PLLs. Three separate circuits similar to the one shown in Figure 22 using surface mount capacitors
with minimum effective series inductance (ESL) is recommended for AVdd, and AVdd2, and LAVdd
power signal pins. Consistent with the recommendations of Dr. Howard Johnson in High Speed Digital
Design: A Handbook of Black Magic (Prentice Hall, 1993), multiple small capacitors of equal value are
recommended over using multiple values.
The circuits should be placed as close as possible to the respective input signal pins to minimize noise
coupled from nearby circuits. Routing directly as possible from the capacitors to the input signal pins with
minimal inductance of vias is important.
Figure 22. PLL Power Supply Filter Circuit
1.7.2 Power Supply Voltage Sequencing
The notes in Table 2 contain cautions about sequencing external bus voltages and internal voltages of the
MPC8240. These cautions are necessary for the long-term reliability of the part. If they are violated, the
electrostatic discharge (ESD) protection diodes will be forward biased and excessive current can ow
through these diodes. Figure 2 shows a typical ramping voltage sequence where the DC power sources
(voltage regulators or power supplies) are connected as shown in Figure 23. The voltage regulator delay
shown in Figure 2 can be zero if the various DC voltage levels are all applied to the target board at the
same time. The ramping voltage sequence shows a scenario in which the Vdd/AVdd/AVdd2/LAVdd power
Vdd
AVdd, AVdd2, or LAVdd
10
2.2 F
GND
Low ESL surface-mount capacitors
相关PDF资料 |
PDF描述 |
|---|---|
| MPC8240LZU250X | 32-BIT, 250 MHz, RISC PROCESSOR, PBGA352 |
| MPC8240RZU266X | 32-BIT, 266 MHz, RISC PROCESSOR, PBGA352 |
| MPC8245LZU300X | 32-BIT, 300 MHz, RISC PROCESSOR, PBGA352 |
| MPC8245LZU350X | 32-BIT, 350 MHz, RISC PROCESSOR, PBGA352 |
| MPC8270CVVQLDA | 32-BIT, 333 MHz, RISC PROCESSOR, PBGA480 |
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。