参数资料
型号: MPC8245LZU266B
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-UP, TBGA-352
文件页数: 8/64页
文件大小: 940K
代理商: MPC8245LZU266B
16
MPC8245 Integrated Processor Hardware Specifications
MOTOROLA
Electrical and Thermal Characteristics
Note also that the DLL_MAX_DELAY bit can lengthen the amount of time through the delay line. This is
accomplished by increasing the time between each of the 128 tap points in the delay line. Although this
increased time makes it easier to guarantee that the reference clock will be within the DLL lock range, it
also means there may be slightly more jitter in the output clock of the DLL, should the phase comparator
shift the clock between adjacent tap points. Refer to Motorola Application Note AN2164,
MPC8245/MPC8241 Memory Clock Design Guidelines, for more details on memory design.
Figure 7. DLL Locking Range Loop Delay vs. Frequency of Operation for DLL_Extend=1
and Normal Tap Delay
10
15
20
25
12.5
17.5
22.5
27.5
0123
4
30
7.5
Tloop Propagation Delay Time (ns)
T
cl
kSDRAM
_
SYNC_
OUT
Pe
ri
o
d
(n
s)
N = 1
N = 2
相关PDF资料
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MPC8260ACZUMIBB 32-BIT, 266 MHz, RISC PROCESSOR, PBGA480
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相关代理商/技术参数
参数描述
MPC8245LZU266D 功能描述:微处理器 - MPU 266MHz 505.4MIPS 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
MPC8245LZU300D 功能描述:微处理器 - MPU 300MHz 570MIPS 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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