參數(shù)資料
型號: IBM25PPC750CXEJQ5012T
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 500 MHz, RISC PROCESSOR, PBGA256
封裝: 27 X 27 MM, LEAD FREE, PLASTIC, BGA-256
文件頁數(shù): 31/44頁
文件大?。?/td> 416K
代理商: IBM25PPC750CXEJQ5012T
Data Sheet
Preliminary
PowerPC 750CXe RISC Microprocessor
750cxe_DD3.1_Dev_3_gen_mkt.fm.1.5
April 8, 2004
System Design Information
Page 29 of 36
Table 6-2 on page 29 summarizes the impedance a board designer would design to for a typical process.
6.5.1 Input-Output Usage
Table 6-3 provides details on the input-output usage of the PowerPC 750CXe signals. The column titled
Usage Group refers to the general functional category of the signal.
In the PowerPC 750CXe, certain input-output signals have pull-ups and pull-downs, which may or may not be
enabled. The column titled I/O with Internal Resistors defines which signals have these pull-ups or pull-
downs, and their active or inactive state.
The column titled “Level Protect” defines which signals have the designated function added to their I/O cell.
Table 6-2. Driver Impedance Characteristics
Process
60x Impedance (
)VDD, OVDD (V)
Temperature (
°C)
Worst
65
1.70, 1.70
105
Typical
50
1.80, 1.80
65
Best
40
1.90, 1.90
0
Best
30
1.90, 1.90
-40
Worst
65
1.70, 2.38
105
Typical
50
1.80, 2.5
65
Best
40
1.90, 2.62
0
Best
30
1.90, 2.62
-40
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