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参数资料
| 型号： | EM6640SO18A |
| 英文描述： | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 8-SOIC |
| 中文描述： | 微控制器 |
| 文件页数： | 44/62页 |
| 文件大小： | 620K |
| 代理商： | EM6640SO18A |
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EM6640
03/02 REV. C/446
Copyright
2002, EM Microelectronic-Marin SA
49
www.emmicroelectronic.com
16.1.3 PortC Metal Options
Pull-Up or No Pull-Up can be
selected for each PortC input. The
Pull-Up is only active in N-Channel
Open Drain Mode.
Pull-Down or No Pull-Down can be
selected for each PortC input.
The total pull value (pull-up or
pulldown) 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
(one can not choose both). Weak,
strong or none must be chosen.
The default is Strong. The default
resistor R1 value is 85kOhm. The
user may choose a different value
from 85kOhm down to 0 Ohm.
However the value must first be
checked
and
agreed
by
EM
Microelectronic Marin SA.
To select an option put a cross-X in
column 1,2 and 4 and reconfirm the
R1 value in column 3.
The default value is : strong pulldown
with R1=85k
Total value of typ. 100kOhm
To select an option put a cross-X in
column 1,2 and 4 and reconfirm the
R1 value in column 3.
The default value is : strong pull-up
with R1=85k
Total value of typ. 100kOhm
Figure 31. PortC pull options
Resistor R1
MPCPDweak[n]
weak pulldown
MPCPDstrong[n]
strong pulldown
MPCPUweak[n]
weak pullup
MPCPUstrong[n]
strong pullup
PullUp Control
PC[n]
Terminal
85 kOhm
PullDown Control
or
Block
No Pullup
No Pulldown
Input circuitry
Option
name
strong
Pull-
Down
weak
Pull-
Down
R1
value
NO
Pull-
Down
1
2
3
4
MPBPD[3]
PB3 input pull-down
MPBPD[2]
PB2 input pull-down
MPBPD[1]
PB1 input pull-down
MPBPD[0]
PB0 input pull-down
Option
name
strong
Pull-Up
weak
Pull-Up
R1
value
NO
Pull-Up
1
2
3
4
MPBPU[3]
PB3 input pull-up
MPBPU[2]
PB2 input pull-up
MPBPU[1]
PB1 input pull-up
MPBPU[0]
PB0 input pull-up
相关PDF资料 |
PDF描述 |
|---|---|
| EM6640SO18B | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 10-DFN |
| EM6640TP16A | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 10-DFN |
| EM6640TP16B | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 8-SOIC |
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| EM6821TQ52D | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 8-SOIC |
相关代理商/技术参数 |
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|---|---|
| EM6640SO18B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| EM6640TP16A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| EM6640TP16B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microcontroller |
| EM6640WP11 | 制造商:EMMICRO 制造商全称:EM Microelectronic - MARIN SA 功能描述:Low Power Microcontroller with EEPROM AND RC Oscillator |
| EM6640WP27 | 制造商:EMMICRO 制造商全称:EM Microelectronic - MARIN SA 功能描述:Low Power Microcontroller with EEPROM AND RC Oscillator |
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