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PPC440EPX-SPAFFFTS 参数 Datasheet PDF下载

PPC440EPX-SPAFFFTS图片预览
型号: PPC440EPX-SPAFFFTS
PDF下载: 下载PDF文件 查看货源
内容描述: 440EPx的PowerPC嵌入式处理器 [PowerPC 440EPx Embedded Processor]
分类和应用: PC
文件页数/大小: 94 页 / 3193 K
品牌: AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
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Revision 1.26 – October 15, 2007  
440EPx – PPC440EPx Embedded Processor  
Preliminary Data Sheet  
Table 22. DDR SDRAM Output Driver Specifications  
Output Current (mA)  
Signal Path  
I/O H (maximum)  
I/O L (maximum)  
Write Data  
MemData00:63  
ECC0:7  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
DM0:8  
MemClkOut  
MemAddr00:13  
BA0:2  
RAS  
CAS  
WE  
BankSel0:1  
ClkEn  
DQS0:8  
MemODT0:1  
DDR SDRAM Write Operation  
The rising edge of MemClkOut aligns with the first rising edge of the DQS signal on writes. The following data is  
generated by means of simulation and includes logic, driver, package RLC, and lengths. Values are calculated  
over best case and worst case processes with speed, junction temperature, and voltage as follows:  
Table 23. DDR SDRAM Write Operation Conditions  
Case  
Best  
Process Speed  
Fast  
Junction Temperature (°C)  
Voltage (V)  
+1.6  
40  
Worst  
Slow  
+125  
+1.425  
Note: In the following tables and timing diagrams, minimum values are measured under best case conditions and  
maximum values are measured under worst case conditions. The timing numbers in the following sections are  
obtained using a simulation that assumes a model as shown in Figure 10.  
The following diagram illustrates the relationship among the signals involved with a DDR write operation.  
AMCC Proprietary  
87  
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