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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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UPD17933 데이터시트(PDF) 21 Page - NEC |
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UPD17933 데이터시트(HTML) 21 Page - NEC |
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21 / 252 page  21 µPD17933, 17934 2.2 Program Memory Figure 2-2 shows the configuration of the program memory. As shown in this figure, the program memory consists of: µPD17933: 6144 × 16 bits (0000H-17FFH) µPD17934: 8192 × 16 bits (0000H-1FFFH) Because all “instructions” are “one-word instructions”, one instruction can be stored to one address of the program memory. As constant data, the contents of the program memory are read to the data buffer by using a table reference instruction. Figure 2-2. Configuration of Program Memory 16 bits H BR addr instruction branch address BR @AR instruction branch address CALL @AR instruction subroutine entry address MOVT DBF, @AR instruction table reference address Address H H H H H H H H ( PD17933) Reset start address Serial interface 1 interrupt vector Basic timer 1 interrupt vector Timer 0 interrupt vector INT pin interrupt vector Page 0 Page 1 Page 2 Page 3 CALL addr instruction subroutine entry address 0 1 2 3 4 F F F F 0 0 0 0 0 F F F F 0 0 0 0 0 7 F 7 F 0 0 0 0 0 0 0 1 1 µ ( PD17934) µ |
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