- 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(hào)： | 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(yè)數(shù)： | 9/69頁(yè) |
| 文件大小： | 852K |
| 代理商： | EM6821TQ52B |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)當(dāng)前第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)
EM6821
10/01, Revision A/386
Copyright
2001, EM Microelectronic-Marin SA
17
www.emmicroelectronic.com
6.4 Port B
The EM6821 has one four bit general purpose I/O port. Each bit can be configured individually by software for
input/output, pull-up, pull-down and CMOS or Nch. open drain output type. The port outputs either data,
frequency or PWM signals.
6.4.1 Input / Output Mode
Each port B terminal is bit-wise bi-directional. The input or output mode on each port B terminal is set by writing
the corresponding bit in the RegPBCntl control register. To set for input (default), 0 is written to the
corresponding bit of the RegPBCntl register which results in a high impedance state for the output driver. The
output mode is set by writing 1 in the control register, and consequently the output terminal follows the status of
the bits in the RegPBData register.
The port B terminal status can be read on address RegPBData even in output mode. Be aware that the data
read on port B is not necessary of the same value as the data stored on RegPBData register.
See also Figure 11 for details.
Figure 11. Port B Architecture
Open Drain Option
Register
Port B Direction Register
Port B Data Register
Internal Data Bus
MUX
Active
Pull-down
I / O Terminal
PB[n]
DDR[n]
DR[n]
DB[n]
Read
Read for PB[3:0]
Multiplexed
Output
Multiplexed
Output Active
Multiplexed
Outputs are:
PWM, Ck[16],
Ck[11], Ck[1]
Port B
Control
Active Pull-up
in Nch. Open
Drain Mode
Read
Pd[n]
Pull-down
Option Register
OD[n]
mask option
MPBPD[n]
Mask Option
MPBPD[n]
4
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(gòu)，3分鐘左右您將得到回復(fù)。