8251 Pin Diagram: Fig. 14.36 shows the 8251 Pin Diagram. Data Bus : Bi-directional, tri-state, 8-bit Data Bus. This pin allow transfer of bytes between the CPU and the 8251A. RD (Read) : A low…
Features of 8251 Microcontroller: The features of Features of 8251 Microcontroller are namely, 1. The Intel 8251A is an universal synchronous and asynchronous communication controller. 2. It supports standard asynchronous protocol with : 5 to 8…
Serial Communication Interface 8251: Most of the microprocessors are designed for parallel communication. In parallel communication number of lines required to transfer data depend on the number of bits to be transferred. For example, to…
8255 Interfacing with 8086: Fig. 14.17 shows the 8255 Interfacing with 8086 Microprocessor and Interfacing 8255 with 8085 Microprocessor in I/O mapped I/O technique. Here RD and WR signals are activated when IO/M signal is…
8255 Programming and Operation: The 8255 Programming and Operation are follows Programming in Mode 0: The Ports A, B and C can be configured as simple input or output ports by writing the appropriate control word…
8255 Pin Diagram: Fig. 14.1 shows the 8255 Pin Diagram of Microprocessor. 8255 Block Diagram: Fig. 14.2 shows the internal 8255 block diagram of 8255 Pin Diagram Microprocessor. It consists of data bus buffer, control…
Features of 8255 Microprocessor: Features of 8255 Microprocessor - Here we see programmable peripheral interface (PPI), 8255, designed by Intel. It is a general purpose programmable I/O device used for parallel data transfer. It has…
Interrupt Structure of 8096: Eight interrupt sources are available on the Interrupt Structure of 8096. When enabled, an interrupt occurring on any of these sources will read the address of interrupt service routine (ISR) from…
8096 Memory Space: The addressable memory space on the 8096 Memory Space consists of 64 K bytes, most of which is available to the user for program or data memory. Locations which have special purposes…
8096 Microprocessor Functional Units: Table 13.2 shows the list of major I/O functions provided by various 8096 Microprocessor Functional Units. Timers: The 8096 Microprocessor Functional Units has two 16 bit timers. The first is designated…
