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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： | 9/67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
17
www.emmicroelectronic.com
7.4 Port B
The EM6617 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.
7.4.1 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 13 for details.
Figure 13. 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]
PBIOCntl[n]
PBData[n]
DB[n]
Read
Read for PB[3:0]
Multiplexed
Output
Multiplexed
Output Active
Multiplexed
Outputs are:
PWM, Ck[11],
Ck[16], Ck[12]
Port B
Control
Active Pull-up
in Nch. Open
Drain Mode
Read
NoPdPB[n]
Pull-down
Option Register
NchOpDPB[n]
mask option
MPBPD[n]
Mask Option
MPBPD[n]
4
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 |
| EM6617SO28B | Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 8-EPSOIC T&R |
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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