Question
Download Solution PDFHow many 16 bit registers are there in 8051?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- 8051 microcontroller consists of four register banks, such as Bank 0, Bank 1, Bank 2, Bank 3 which are selected by the PSW (Program Status Word) register.
- 8051 has 32 general-purpose registers and the size of each register is 8-bit.
- It has two 16-bit registers and they are the data pointer (DTPR) and the program counter (PC).
The Block Diagram of an 8051 microcontroller is as shown:
In an 8051 microcontroller:
- Internal RAM (data memory) - 128 bytes
- Internal memory (code memory) - 4 kB
- Timer/counter - 2
- No. of interrupt - 5
- I/O pins - 32
- Serial port - 1
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