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| 型号： | EM6617DL24A |
| 英文描述： | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 8-SOIC |
| 中文描述： | 微控制器 |
| 文件页数： | 43/67页 |
| 文件大小： | 824K |
| 代理商： | EM6617DL24A |
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EM6617
03/02 REV. C/442
Copyright
2002, EM Microelectronic-Marin SA
48
www.emmicroelectronic.com
19. Mask Options
Most options which in many Controllers are realized as metal mask options are directly user selectable with
the option registers, therefore allowing a maximum freedom of choice .
The following options can be selected at the time of programming the metal mask ROM.
19.1 Input / Output Ports
19.1.1 Port A Metal Options
Pull-up or no pull-up can be selected
for each port A input. A pull-up
selection is excluding a pull-down on
the same input.
Pull-down (default) or no pull-down
can be selected for each port A input.
A pull-down selection is excluding a
pull-up on the same 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.
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 : No pull-up
Figure 32. Port A Pull Options
Resistor R1
MPAPDweak[n]
Weak Pull-down
MPAPDstrong[n]
Strong Pull-down
MPAPUweak[n]
Weak Pull-up
MPAPUstrong[n]
Strong Pull-up
Pull-up Control
PA[n]
Terminal
100 KOhm
No Pull-up
No Pull-down
Pull-down Control
OR
Input Circuitry
Option
Name
Strong
Pull-
down
W
Pull-
down
R1
Value
Typ.100
k
No
Pull-
down
1
2
3
4
MPAPD[3]
PA3 input pull-down
MPAPD[2]
PA2 input pull-down
MPAPD[1]
PA1 input pull-down
MPAPD[0]
PA0 input pull-down
Option
Name
Strong
Pull-up
Weak
Pull-up
R1
Value
typ.100k
No
Pull-up
1
2
3
4
MPAPU[3]
PA3 input pull-up
MPAPU[2]
PA2 input pull-up
MPAPU[1]
PA1 input pull-up
MPAPU[0]
PA0 input pull-up
相关PDF资料 |
PDF描述 |
|---|---|
| EM6617DL28A | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 8-SOIC T&R |
| EM6617SO24A | 30V N-Channel PowerTrench MOSFET |
| EM6617SO24B | 30V N-Channel PowerTrench MOSFET |
| EM6617SO28A | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 8-EPSOIC T&R |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EM6617DL28A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| EM6617SO24A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| EM6617SO24B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| EM6617SO28A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| EM6617SO28B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
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