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C8051F54X Datasheet(PDF) 83 Page - Silicon Laboratories |
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C8051F54X Datasheet(HTML) 83 Page - Silicon Laboratories |
83 / 276 page C8051F54x Rev. 1.1 82 SFR Address = 0x81; SFR Page = All Pages SFR Address = 0xE0; SFR Page = All Pages; Bit-Addressable SFR Address = 0xF0; SFR Page = All Pages; Bit-Addressable SFR Definition 10.3. SP: Stack Pointer Bit 7 6 5 4 3 2 1 0 Name SP[7:0] Type R/W Reset 0 0 0 0 0 1 1 1 Bit Name Function 7:0 SP[7:0] Stack Pointer. The Stack Pointer holds the location of the top of the stack. The stack pointer is incre- mented before every PUSH operation. The SP register defaults to 0x07 after reset. SFR Definition 10.4. ACC: Accumulator Bit 7 6 5 4 3 2 1 0 Name ACC[7:0] Type R/W Reset 0 0 0 0 0 0 0 0 Bit Name Function 7:0 ACC[7:0] Accumulator. This register is the accumulator for arithmetic operations. SFR Definition 10.5. B: B Register Bit 7 6 5 4 3 2 1 0 Name B[7:0] Type R/W Reset 0 0 0 0 0 0 0 0 Bit Name Function 7:0 B[7:0] B Register. This register serves as a second accumulator for certain arithmetic operations. |
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