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參數(shù)資料
| 型號(hào)： | EM6517 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機(jī)的小型通用紅外遙控器 |
| 文件頁(yè)數(shù)： | 50/66頁(yè) |
| 文件大?。?/td> | 762K |
| 代理商： | EM6517 |
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EM6517
FOR ENGINEERING ONLY
EM Microelectronic-Marin SA, 09/99, Rev. A/277
50
19.1.3 Port C Metal Options
Pull-up or no pull-up can be selected
for each port C input. The pull-up is
only active in Nch. open drain mode.
Pull-down or no pull-down can be
selected for each port C input.
The total pull value (pull-up or pull-
down) is a series resistance out of the
resistance R1 and the switching
transistor. As a switching transistor the
user can choose between a high
impedance (weak) or a low impedance
(strong) switch. Weak , strong or none
must be chosen. The default is strong.
The default resistor R1 value is 100
KOhm. The user may choose a
different value from 150 KOhm down to
0 Ohm. However the value must first
be checked and agreed by EM
Microelectronic Marin SA. Refer also to
chapter
To select an option put an
X
in
column 1,2 and 4 and reconfirm the
R1 value in column 3.
The default value is : strong pull-
down with R1=100 KOhm
To select an option put an
X
in
column 1,2 and 4 and reconfirm the
R1 value in column 3.
The default value is : strong pull-up
with R1=100 KOhm
Figure 34. Port C Pull Options
Input Circuitry
Resistor R1
100 KOhm
MPCDweak[n]
Weak Pull-down
MPCDstrong[n]
Strong Pull-down
MPCUweak[n]
Weak Pull-up
MPCUstrong[n]
Strong Pull-up
Pull-up Control
PC[n]
Terminal
Pull-down Control
OR
Block
No Pull-up
No Pull-down
Option
Name
Strong
Pull-
down
1
Weak
Pull-
down
2
R1
Value
Typ.100k
3
100k
100k
100k
100k
NO
Pull-
Down
4
MPCD[3]
MPCD[2]
MPCD[1]
MPCD[0]
PC3 input pull-down
PC2 input pull-down
PC1 input pull-down
PC0 input pull-down
X
X
X
X
Option
Name
Strong
Pull-up
weak
Pull-up
R1
Value
Typ. 100k
3
100k
100k
100k
100k
NO
Pull-up
1
2
4
MPCU[3]
MPCU[2]
MPCU[1]
MPCU[0]
PC3 input pull-up
PC2 input pull-up
PC1 input pull-up
PC0 input pull-up
X
X
X
X
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相關(guān)代理商/技術(shù)參數(shù) |
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| EM6517-240# | 制造商:DANAHER - FLUKE 功能描述:BNC TO BANTAM CABLE 制造商:Fluke Electronics 功能描述:BNC TO BANTAM CABLE |
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| EM65240 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Graphic STN LCD Drivers |
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