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