- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370013 > PowerPC 750CX (IBM Microeletronics) 32-Bit Reduced Instruction Set Computer (RISC) Microprocessors(32位精簡指令集微處理器) PDF資料下載
參數(shù)資料
| 型號： | PowerPC 750CX |
| 廠商： | IBM Microeletronics |
| 英文描述： | 32-Bit Reduced Instruction Set Computer (RISC) Microprocessors(32位精簡指令集微處理器) |
| 中文描述： | 32位精簡指令集計算機(jī)（RISC）微處理器（32位精簡指令集微處理器） |
| 文件頁數(shù)： | 32/44頁 |
| 文件大?。?/td> | 562K |
| 代理商： | POWERPC 750CX |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁當(dāng)前第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
PowerPC 750CX RISC Microprocessor Datasheet
Page 32
Version 1.1
November 13, 2000
7.5
Output Buffer DC Impedance
The PowerPC 750CX 60X drivers were characterized over various process, voltage, and temperature conditions. To
measure Z
0
, an external resistor is connected to the chip pad, either to OV
DD
or GND. Then the value of the resistor is
varied until the pad voltage is OV
DD
/2; see Figure 16 below.
The output impedance is actually the average of two resistances: the resistance of the pull-up and the resistance of pull-
down devices. When Data is held low, SW1 is closed (SW2 is open), and R
N
is trimmed until Pad = OV
DD
/2. R
N
then
becomes the resistance of the pull-down devices. When Data is held high, SW2 is closed (SW1 is open), and R
P
is
trimmed until Pad = OV
DD
/2. R
P
then becomes the resistance of the pull-up devices. With a properly designed driver R
P
and R
N
are close to each other in value, then Z
0
= (R
P
+ R
N
)/2.
The following table summarizes the impedance a board designer would design to for a typical process.
Figure 16. Driver Impedance Measurement
Table 15: Driver Impedance Characteristics
Process
60X Impedance (
)
V
DD
, OV
DD
(V)
Temperature (
°
C)
Worst
65
1.70
105
Typical
50
1.8
65
Best
40
1.90
0
Worst
65
2.38
105
Typical
50
2.5
65
Best
40
2.62
0
Data
OV
DD
R
N
SW2
SW1
Pad
R
P
GND
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PowerPC 750 | 32-Bit Embedded Microprocessor(32位精簡指令集嵌入式微處理器) |
| PP-MOD1V2 | ISP INTERFACE MODULE |
| PP01002 | GEHOERSCHUTZ OHRSTOEPSEL 250ST Inhalt pro Packung: 250 Stk. |
| PP0901SA | Direct ProTek Replacement:PP0901SA |
| PP0901SB | Direct ProTek Replacement:PP0901SB |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| POWERPLUG15W | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AC/DC POWER SUPPLY |
| POWERPLUG24W | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AC/DC POWER SUPPLY |
| POWERPLUS 2C 2500MAH | 制造商:Energizer Battery Company 功能描述: |
| POWERPLUS 2D 2500MAH | 制造商:Energizer Battery Company 功能描述: |
| POWERPLUS 4AAA 850MAH | 制造商:Energizer Battery Company 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。