- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄97909 > EM6821TQ52B Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 8-EPSOIC PDF資料下載
參數(shù)資料
| 型號： | EM6821TQ52B |
| 英文描述： | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 8-EPSOIC |
| 中文描述： | 微控制器 |
| 文件頁數(shù)： | 52/69頁 |
| 文件大?。?/td> | 852K |
| 代理商： | EM6821TQ52B |
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頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁當(dāng)前第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁
EM6821
10/01, Revision A/386
Copyright
2001, EM Microelectronic-Marin SA
56
www.emmicroelectronic.com
18. 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 .See chapter: Option Register Memory
Map.
The following options can be selected at the time of programming the metal mask ROM, except the LCD Segment
allocation which is defined using the interconnect metal2 mask.
18.1 Input / Output Ports
18.1.1 Port A Metal Options
18.1.2 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 90 KOhm. The user may
choose a different value lower than
90kOhm. However the value must
first be checked and agreed by EM Microelectronic Marin SA. Refer also to chapter 19.2 and 19.1 for the pull
values.
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=90 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=90 KOhm
Figure 38. 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.90k
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.90k
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EM6821TQ52D | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 8-SOIC |
| EM73MA89B | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 8-EPSOIC T&R |
| EM78156E | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 14-SOIC |
| EM78458 | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0°C to 70°C; Package: 16-QFN |
| EM78459 | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 14-SOIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EM685 | 制造商:Distributed By MCM 功能描述:UTILITY MOTOR |
| EM68C16CWVB-25H | 制造商:Etron 功能描述:DDRII SDRAM,1Gb,64M*16,Pb & Halogen free |
| EM6A8160TSA | 制造商:ETRON 制造商全稱:ETRON 功能描述:4M x 16 DDR Synchronous DRAM (SDRAM) |
| EM6A8160TSA-5G | 制造商:ETRON 制造商全稱:ETRON 功能描述:4M x 16 DDR Synchronous DRAM (SDRAM) |
| EM6A9160 | 制造商:ETRON 制造商全稱:ETRON 功能描述:8M x 16 DDR Synchronous DRAM (SDRAM) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。