Tag: MCS-51
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ADD Instruction in Intel 8051 (MCS-51) Microcontroller
The ADD instruction tells the microcontroller’s CPU to add the source byte to register A and put the result in register A. Recall, A is the accumulator register typically used for all arithmetic and logic instructions. The ADD instruction is usually in the following form: ADD A, source ; ADD the source operand to the…
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Main Features of 80C51, 87C51 and 80C31 Microcontrollers
All these three types of microcontrollers are 8-bit manufactured by NXP semiconductors with embedded Intel processors. Some of the key features of these microcontrollers are listed in the following sections but it is important to note that, you can get the full and latest details on each of the specific device from the official documentation.…
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The Basic Structure of Intel 8051 Microcontroller
The Intel 8051 also known as MCS-51 is an 8-bit microcontroller and one of the most popular microcontrollers. The Intel 8051 has four parallel input/output ports; ports 0, 1, 2 and 3. Ports 0, 2 and 3 also have alternative functions. The Intel 8051AH version has 4K bytes ROM, 128 bytes RAM, two timers, and…