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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DM163006 датащи(PDF) 78 Page - Microchip Technology |
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DM163006 датащи(HTML) 78 Page - Microchip Technology |
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78 / 320 page  PIC18C601/801 DS39541A-page 78 Advance Information 2001 Microchip Technology Inc. 6.3.1 8-BIT EXTERNAL TABLE WRITES When the external bus is 8-bit, the byte-wide Table Write exactly corresponds to the bus length and there are no special considerations required. The WRL signal is used as the active write signal. Figure 6-6 and Figure 6-7 show the timings associated with the 8-bit modes. FIGURE 6-6: TBLWT EXTERNAL INTERACE TIMING (8-BIT MULTIPLEXED MODE) Q2 Q1 Q3 Q4 Q2 Q1 Q3 Q4 Q2 Q1 Q3 Q4 A<19:8> ALE AAh WRH WRL AD<7:0> 03Ah 03Ah BA0 Opcode Fetch Opcode Fetch Opcode Fetch TBLWT* TBLWT Cycle1 ADDLW 55h from 007554h 08h ’1’ Q2 Q1 Q3 Q4 CCFh 33h TBLWT 92h to 199E67h 92h 00h ABh 55h 0Eh ACh 55h 0Fh 03Ah from 007558h Memory Cycle Instruction Execution INST(PC-2) TBLWT Cycle2 MOVLW 55h from 007556h MOVLW OE |
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