Programmer's View of 8051

Now let us see the internal registers, memory and other details from the Programmer’s point of view.

There are these components

• Eight registers(8-bit) R0 to R7

• Register A and B.These are also 8-bit registers

• PSW, Stack Pointer(SP), four ports (P0 to P3). These are also 8-bit

• DPTR register of 16-bit. This is divided into two 8-bit registers, these are DPH and DPL

• Data RAM from location 08H to 7FH

• Program memory from location 0000H to FFFFH

• Program Counter (PC) of 16-bit