8085 interfacing with memory Chips Microprocessor need to access memory quite frequently to read instructions and data stored in memory; the interface circuit enables that access. Memory Mapping of 8085 . There are various communication devices like the keyboard, mouse, printer, etc. 8085 Interfacing with Memory chips 8085 Memory Interface Memory Chip Address Data Control Address Data Control 26. The 8085 Architecture • The 8085 uses three separate busses to perform its operations – The address bus. 4. INTERFACING THE 8085 A brief description of the signals between the 8085 and the outside world follows. The Memory Interfacing in 8085 is used to access memory quite frequently to read instruction codes and data stored in memory. IO Interfacing. So, we need to interface the keyboard and other devices with the microprocessor … Memory interfacing is used to provide more memory space to accommodate complex programs for more complicated systems. [Memory has certain signal requirements to read from and write into memory. The interface process involves designing a circuit that will match the memory requirements with the microprocessor signal.
Refer to the reference manual for pin-outs and details. – The data bus. Memory Interfacing in 8085: Memory is an integral part of a microprocessor system, and in this section, we will discuss how to interface a memory device with the microprocessor. Whose address range between 0000h to FFFFh (64k).But some part of the space is reserved for I/O devices. Memory Mapped IO: Memory Mapped IO It considers them like any other memory location. – The control bus.Microprocessors & Interfacing Dr. Bassel Soudan 3. i.e; 2^n = 64 x 1000 bytes where n = address lines.

The interfacing process includes some key factors to match with the memory requirements and microprocessor signals. 8085 can access 64kB of external memory. The memory capacity is 64 Kbytes. Source : https://ashiremath.files.wordpress.com/2018/02/15cs44_module_1.pptx. In memory mapped I/O interfacing with 8085 microprocessor, the I/O devices are not given separate addresses other than treated as a memory location.

8085 interfacing with memory Chips Microprocessor need to access memory quite frequently to read instructions and data stored in memory; the interface circuit enables that access. memory interfacing in 8085 problems 4 Logic devices for interfacing.

In this system the entire 16 address lines of the processor are connected to address input pins of memory IC in order to address the internal locations of memory. The interfacing circuit therefore should be designed in such a way that it matches the memory signal requirements with the signals of the microprocessor. They are assigned a 16-bit address within the address range of the 8085. So, n = 16. memory interfacing in 8085 microprocessor refers to provide a intermediate mode of transferring or receiving data from registers to main memory
Types of memories which are most commonly used to interface with 8085 are RAM, ROM, and EEPROM. 8085 Interfacing with Memory chips 8085 Memory Interface Memory Chip AD0-AD7 Control A0 – A7 Data 74LS373 A8-A15 A8-A15 ALE 27. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 41bca9-YzI0M Presentation Summary : The 8086 capacity of 1 megabyte of memory exceeded the 8080/8085 maximum of 64K bytes of memory. The interface process involves designing a circuit that will match the memory requirements with the microprocessor signal.