cpu8086引脚_8086微处理器的引脚图

cpu8086引脚

The 8086 microprocessor is a 40 pin IC in which there are 20 pins on each side of the IC. The diagram of the same is as follows:

8086微处理器是40针IC，其中IC的每一侧都有20针。 相同的图如下：

Image source: https://images.app.goo.gl/JQw5Fqvjv7mfxSP97

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8086微处理器的引脚说明 (Pin description for 8086 Microprocessor)

AD0 to AD15

AD0至AD15

These lines are multiplexed unidirectional address and status bus. What this means is that at time T1, they carry status signals and in remaining cycles, they carry status signals.

这些线是多路复用的单向地址和状态总线。 这意味着，在时间T1，它们承载状态信号，而在剩余的周期中，它们承载状态信号。

• S6 is used as bus master, which handles the internal bus control.
  S6用作总线主控器，用于处理内部总线控制。
• S5 is used as interrupt flag.
  S5用作中断标志。
• S4 and S3 are used to select the segment out of the four segments.
  S4和S3用于从四个段中选择一个段。

BHE' / S7

BHE'/ S7

BHE stands for Bus High Enable. It is an active low signal, i.e. it is active when it is low. It is used to indicate the transfer of data over the higher order data bus (D8 to D15).

BHE代表总线高使能。 它是低电平有效信号，即低电平时有效。 它用于指示通过高阶数据总线(D8至D15)的数据传输。

BHE' decides whether the data bus will carry 16-bit data or 8-bit data. When BHE’ is enabled (i.e. 0), then the bus will carry 16-bit data, else only 8-bit data through the lower order data bus lines. It is multiplexed with status pin S7.

BHE'决定数据总线将携带16位数据还是8位数据。 当启用BHE'(即0)时，总线将通过低阶数据总线传输16位数据，否则仅传输8位数据。 它与状态引脚S7多路复用。

RD'

RD'

It is a read signal used for read operation. It is also an active low signal.

这是用于读取操作的读取信号。 这也是一个低电平有效信号。

READY

准备

This is an acknowledgment signal from the slower I/O devices or memory. When high, it indicates that the device is ready to transfer data, else the microprocessor is in the wait state.

这是来自速度较慢的I / O设备或内存的确认信号。 高电平时，表明设备已准备好传输数据，否则微处理器处于等待状态。

RESET

重启

By using this pin, the program control returns to FFFF0_H.

通过使用该引脚，程序控制返回到FFFF0 _H。

INTR

INTR

This pin is used to receive an interrupt request signal. It is a type of maskable interrupt.

该引脚用于接收中断请求信号。 这是一种可屏蔽的中断。

NMI

NMI

This is used for Non-Maskable Interrupt Request.

这用于不可屏蔽的中断请求。

GND

地线

There are two ground pins in the 8086, pin 1 and pin 20.

8086中有两个接地引脚，即引脚1和引脚20。

VCC

VCC

The pin 40 is for voltage input.

引脚40用于电压输入。

MN / MX'

MN / MX'

This pin is used for minimum or maximum mode of the microprocessor. When this pin is 1, the microprocessor works in minimum mode, and when the pin is at 0, the maximum mode is followed.

该引脚用于微处理器的最小或最大模式。 当此引脚为1时，微处理器以最小模式工作，而当引脚为0时，则遵循最大模式。

Minimum and maximum Mode Pins

最小和最大模式引脚

Total 8 pins, from Pin 24 to pin 31 work differently for different modes (maximum or minimum).

从引脚24到引脚31的总共8个引脚在不同模式(最大或最小)下的工作方式不同。

TEST'

测试'

This is also an active low signal. This pin is used for wait instruction when the 8086 is connected with the 8087 microprocessor.

这也是一个低电平有效信号。 8086与8087微处理器连接时，此引脚用于等待指令。

CLK

时钟

This pin tells about the clock pulse.

该引脚告知时钟脉冲。

翻译自: https://www.includehelp.com/embedded-system/pin-diagram-of-8086-microprocessor.aspx

cpu8086引脚