what are cpu features and cpu speed of 8051 micro controller
Answers
Answer:
CPU:
CPU is the brain of a microcontroller. CPU is responsible for fetching the instruction, decodes it, then finally executed. CPU connects every part of a microcontroller into a single system. The primary function of CPU is fetching and decoding instructions. The instruction fetched from program memory must be decoded by the CPU.
Cpu Speed of 8051 Micro Controller:
8051 microcontroller is designed by Intel in 1981. It is an 8-bit microcontroller. It is built with 40 pins DIP (dual inline package), 4kb of ROM storage and 128 bytes of RAM storage, 2 16-bit timers. It consists of are four parallel 8-bit ports, which are programmable as well as addressable as per the requirement. An on-chip crystal oscillator is integrated in the microcontroller having crystal frequency of 12 MHz.
Explanation:
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Answer:
CPU
The CPU is an electronic machine that works on a list of computer things to do, called instructions. It reads the list of instructions and runs (executes) each one in order. A list of instructions that a CPU can run is a computer program.
The clock rate, or speed of a CPU's internal parts, is measured in hertz (Hz). Modern processors often run so fast that gigahertz (GHz) is used instead. One GHz is 1,000,000,000 cycles per second.
Most CPUs used in desktop (home) computers are microprocessors made by either Intel or Advanced Micro Devices (usually shortened to AMD). Some other companies that make CPUs are ARM, IBM, and AMD under ATI Technologies, which is the leader right now. Most of their CPUs are used in embedded systems for more specialized things, like in mobile phones, cars, game consoles, or in the military.
8051 micro controller
The Intel 8051 is an 8-bit microcontroller which means that most available operations are limited to 8 bits. There are 3 basic "sizes" of the 8051: Short, Standard, and Extended. The Short and Standard chips are often available in DIP (dual in-line package) form, but the Extended 8051 models often have a different form factor, and are not "drop-in compatible". All these things are called 8051 because they can all be programmed using 8051 assembly language, and they all share certain features (although the different models all have their own special features).
Some of the features that have made the 8051 popular are:
4 KB on chip program memory.
128 bytes on chip data memory(RAM)
32 bytes devoted to register banks
16 bytes of bit-addressable memory
80 bytes of general-purpose memory
4 reg banks.
128 user defined software flags.
8-bit data bus
16-bit address bus
16 bit timers (usually 2, but may have more, or less).
3 internal and 2 external interrupts.
Bit as well as byte addressable RAM area of 16 bytes.
Four 8-bit ports, (short models have two 8-bit ports).
16-bit program counter and data pointer.
1 Microsecond instruction cycle with 12 MHz Crystal.
Variants of the 8051 may also have a number of special, model-specific features, such as UART, ADC, Op_Amps, etc., making it an even more powerful microcontroller.
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