8051 Pins to Differentiate Internal and External Memory and Memory address in tamil

8051 Microcontroller Internal and External Memory details.
8051 Microcontroller’s memory can be categorized into Program Memory and Data Memory, on the broad level. While, Program Memory is the ROM of 8051 Microcontroller; the Data Memory is RAM. Following is a brief description of the two memory types:
Program Memory (ROM): This memory type saves the executed code of a program permanently. Default size of the memory on chip is 4K; however, depending on the requirement, you can add external memory upto 60K in size. Thus, total Program Memory available on 8051 Microcontroller is 64K in size. The transfer process of executed program from default to external memory is automatic in nature. You must also note that handling of external memory is decided by the logic state of EA (External Access) pin.
Data Memory (RAM): This memory type stores the code of executed program temporarily. While, internal data RAM is 128 bytes in size; it can have external memory upto 64K in size. Thus, total Data Memory available on 8051 Microcontroller is 64K + 128 bytes in size. Further, internal Data Memory RAM is divided in three parts, namely, Register Banks, Bit Addressable Area, and Scratch Pad Area.
If after reading this, you are curious and want to acquire more in-depth knowledge about memory organization, you can join a reputed institute that provides 8051 Microcontroller Training and 8051 Microcontroller Programming Training.
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