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| 型號： | SAB-XC164SM-8F40F |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | PLASTIC, TQFP-64 |
| 文件頁數(shù)： | 37/66頁 |
| 文件大?。?/td> | 613K |
| 代理商： | SAB-XC164SM-8F40F |
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XC164SM
Derivatives
Functional Description
Data Sheet
40
V1.0, 2005-11
3.14
Parallel Ports
The XC164SM provides up to 47 I/O lines which are organized into three input/output
ports and one input port. All port lines are bit-addressable, and all input/output lines are
individually (bit-wise) programmable as inputs or outputs via direction registers. The I/O
ports are true bidirectional ports which are switched to high impedance state when
configured as inputs. The output drivers of some I/O ports can be configured (pin by pin)
for push/pull operation or open-drain operation via control registers. During the internal
reset, all port pins are configured as inputs.
The edge characteristics (shape) and driver characteristics (output current) of the port
drivers can be selected via registers POCONx.
The input threshold of some ports is selectable (TTL or CMOS like), where the special
CMOS like input threshold reduces noise sensitivity due to the input hysteresis. The
input threshold may be selected individually for each byte of the respective ports.
All port lines have programmable alternate input or output functions associated with
them. All port lines that are not used for these alternate functions may be used as general
purpose IO lines.
Table 3-5
Summary of the XC164SM’s Parallel Ports
Port
Control
Alternate Functions
PORT1
Pad drivers
Capture inputs or compare outputs,
Serial interface lines
Port 3
Pad drivers,
Open drain,
Input threshold
Timer control signals, serial interface lines,
System clock output CLKOUT (or FOUT)
Port 5
–
Analog input channels to the A/D converter,
Timer control signals
Port 9
Pad drivers,
Open drain,
Input threshold
Capture inputs or compare outputs
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