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HT66F13 датащи(PDF) 20 Page - Holtek Semiconductor Inc |
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HT66F13 датащи(HTML) 20 Page - Holtek Semiconductor Inc |
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20 / 173 page ![]() If the stack is overflow, the first Program Counter save in the stack will be lost. Device StackLevels HT66F13 4 HT66F14 4 HT66F15 8 ArithmeticandLogicUnit - ALU The arithmetic-logic unit or ALU is a critical area of the microcontroller that carries out arithmetic and logic operations of the instruction set. Connected to the main microcontroller data bus, the ALU receives related instruction codes and performs the required arithmetic or logical operations after which the result will be placed in the specified register. As these ALU calculation or operations may result in carry, borrow or other status changes, the status register will be correspondingly updated to reflect these changes. The ALU supports the following functions: · Arithmetic operations: ADD, ADDM, ADC, ADCM, SUB, SUBM, SBC, SBCM, DAA · Logic operations: AND, OR, XOR, , ORM, XORM, CPL, CPLA · Rotation RRA, RR, RRCA, RRC, RLA, RL, RLCA, RLC · Increment and Decrement INCA, INC, DECA, DEC · Branch decision, JMP, SZ, SZA, SNZ, SIZ, SDZ, SIZA, SDZA, CALL, RET, RETI HT66F13/HT66F14/HT66F15 EnhancedA/DFlashType MCU Rev.1.10 20 February9,2011 P r o g r a m C o u n t e r S t a c k L e v e l 1 S t a c k L e v e l 2 S t a c k L e v e l 3 S t a c k L e v e l N P r o g r a m M e m o r y T o p o f S t a c k S t a c k P o i n t e r B o t t o m o f S t a c k |
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