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| 型号： | ST7PLITEUS5M6TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO8 |
| 封装： | 0.150 INCH, LEAD FREE, PLASTIC, SOP-8 |
| 文件页数： | 46/108页 |
| 文件大小： | 1957K |
| 代理商： | ST7PLITEUS5M6TR |
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ST7LITEUSx
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occur)
– select falling edge
– disable the external interrupt through the OR
register
– select rising edge
9.2.2 Output Modes
The output configuration is selected by setting the
corresponding DDR register bit. In this case, writ-
ing the DR register applies this digital value to the
I/O pin through the latch. Then reading the DR reg-
ister returns the previously stored value.
Two different output modes can be selected by
software through the OR register: Output push-pull
and open-drain.
DR register value and output pin status:
Note: When switching from input to output mode,
the DR register has to be written first to drive the
correct level on the pin as soon as the port is con-
figured as an output.
9.2.3 Alternate Functions
When an on-chip peripheral is configured to use a
pin, the alternate function is automatically select-
ed. This alternate function takes priority over the
standard I/O programming under the following
conditions:
– When the signal is coming from an on-chip pe-
ripheral, the I/O pin is automatically configured in
output mode (push-pull or open drain according
to the peripheral).
– When the signal is going to an on-chip peripher-
al, the I/O pin must be configured in floating input
mode. In this case, the pin state is also digitally
readable by addressing the DR register.
Notes:
– Input pull-up configuration can cause unexpect-
ed value at the input of the alternate peripheral
input.
– When an on-chip peripheral use a pin as input
and output, this pin has to be configured in input
floating mode.
DR
Push-pull
Open-drain
0VSS
Vss
1VDD
Floating
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST7PLITEUS5U3 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit MCU with single voltage Flash memory, ADC, timers |
| ST7PLITEUS5U3TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit MCU with single voltage Flash memory, ADC, timers |
| ST7PLITEUS5U6 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit MCU with single voltage Flash memory, ADC, timers |
| ST7PLITEUS5U6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit MCU with single voltage Flash memory, ADC, timers |
| ST7PMC1K2B3 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:8-bit MCU with nested interrupts, Flash, 10-bit ADC, brushless motor control, five timers, SPI, LINSCI? |
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