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What is the function of dptr?

Updated: 12/23/2022
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Q: What is the function of dptr?
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What is data pointer in microcontroller?

DPTR is a 16-bit register DPTR is made up of two 8-bit registers: DPH and DPL DPTR holds the memory addresses for internal and external code access and external data access (eg. MOVC A,@A+DPTR MOVX A,@DPTR MOVX @DPTR,A ) DPTR is under the control of program instructions and can be specified by its 16-bit name, or by each individual byte name, DPH and DPL DPTR does not have a single internal address; DPH and DPL are each assigned an address


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