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由8051组成的单片机系统通常情况下，P0口分时复用作为地址、数据总线，P2口提供A15...
由8051组成的单片机系统通常情况下，P0口分时复用作为地址、数据总线，P2口提供A15-A8即高8位地址，P3口用作第二功能，只有P1口通常用作I/0口。P1口是8位准双向口，它的每一位都可独立地定义为输入或输出，因此既可作为8位的并行I/O口，也可作为8位的输入输出端。当工作在输入方式时，对应位的锁存器必须先置1,才能正确地读到引脚上的信号,否则,执行读引脚指令时,若对应位的锁存器的值为0，读的结果永远为0。-By 8051, composed of single-chip microcomputer system under normal circumstances, P0 timeshare I reuse as address, data bus, P2 I provide A15-A8 high eight address, P3 mouth for the second function, I usually only P1 for I/0 I. P1 I was eight quasi-two-way port, it can be independent of each and every defined as input or output, it can be used as 8-bit parallel I/O port, can also be used as 8-bit input and output side. When the work in the input, the corresponding bit latch must first buy one in order to correctly read the signal pin, or pin the implementation of reading instruction, if the corresponding bit latch the value of 0, Reading the results of Forever to 0.
- 2023-08-10 04:55:03下载
- 积分：1
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51系列单片之间的串口多机通信程序。已经成功通过调试，可以可靠通信。...
51系列单片之间的串口多机通信程序。已经成功通过调试，可以可靠通信。-51 Series single-chip serial port between the multi-machine communication program. Has successfully passed the testing can be reliable communication.
- 2022-05-29 08:29:50下载
- 积分：1
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c51程序库，汇编写的，希望对大家有点用。
c51程序库，汇编写的，希望对大家有点用。-C51 libraries, compiling written, in the hope that a bit with everyone.
- 2023-03-20 01:50:03下载
- 积分：1
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ARM7杂套开源。包含一些ARM7开发COD…
arm7开发源代码杂集.包含有一些ARM7的开发代码-arm7 miscellaneous set of open source. contains a number of ARM7 Development Code
- 2022-01-21 21:59:24下载
- 积分：1
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STM32FAD conversion, microcontroller development board, in the instances demonst...
STM32FAD转换，单片机开发板，在实例中演示了AD转换过程。-STM32FAD conversion, microcontroller development board, in the instances demonstrate the AD conversion process.
- 2022-09-09 04:15:03下载
- 积分：1
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CYGNAL microcontroller, C8051FXXX routines 4
CYGNAL单片机，C8051FXXX应用例程4-CYGNAL microcontroller, C8051FXXX routines 4
- 2022-07-14 06:03:12下载
- 积分：1
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Freescale HC08/HCS08 series of single
飞思卡尔HC08/HCS08系列单片机LCD驱动源码，希望对大家有用。-Freescale HC08/HCS08 series of single-chip LCD driver source code, in the hope that useful to everyone.
- 2022-03-13 10:18:27下载
- 积分：1
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CF8051F040开发板的 Delay程序
CF8051F040开发板的 Delay程序-Delay of CF8051F040 development board procedures
- 2022-01-30 20:05:37下载
- 积分：1
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主要讲了单片机如何实现自行车测速功能。
十分好。
主要讲了单片机如何实现自行车测速功能。
十分好。-Mainly talked about how to achieve a bike speed microcontroller functionality. Very well.
- 2022-05-12 16:36:10下载
- 积分：1
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arm单片机中I2C程序的编写,实现I2C端口的读写的功能
arm单片机中I2C程序的编写,实现I2C端口的读写的功能 -arm single-chip I2C procedures in writing, reading and writing ports I2C realize the function of
- 2023-07-12 20:30:03下载
- 积分：1
