WebNov 25, 2024 · DPTR is meant for pointing to data. It is the 8051’s only user-accessible 16-bit (2-byte) register. The accumulator, R 0 –R 7 registers and B register are 1-byte value registers. It is used by the 8051 to access external memory using the address indicated by DPTR. DPTR is the only 16-bit register available and is often used to store 2-byte values. WebInstead, some special registers in some processor architectures require special instructions to modify them. In the 8051, register A, B, DPTR, and PSW are a part of the group of registers commonly referred to as SFR (special function registers). An SFR can be accessed by its name or by its address.
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WebDPTR is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms DPTR - What does DPTR stand for? The Free Dictionary WebJun 27, 2024 · The R0 and R1 are used for 8-bit addresses, and DPTR is used for 16-bit addresses, no other registers can be used for addressing purposes. Let us see some examples of this mode. MOV0E5H, @R0; MOV@R1, 80H In the instructions, the @ symbol is used for register indirect addressing. In the first instruction, it is showing that theR0 … hipsman
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WebSelection of a register bank is made possible through a Special Function Register (SFR) named Processor Status Word (PSW). PSW is an 8-bit SFR where each bit can be programmed as required. Bits are designated from PSW.0 to PSW.7. ... MOVC A, @A+DPTR. and. MOVC A, @A+PC. where DPTR is the data pointer and PC is the … WebRegisters Used in 8051 Micro-controller - All about RegistersOther Videos under this category (Microcontroller) are as follows : (Latest to Oldest)1. A Progr... WebNiche Technical Recruiter - Embedded Systems Author has 94 answers and 129.6K answer views 1 y. DPTR stands for Data Pointer Register. It is a register in 8051 microcontroller which contains the current data pointer's … homes for sale in inland empire ca