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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) 80 Page - Microchip Technology |
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DM163006 датащи(HTML) 80 Page - Microchip Technology |
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80 / 320 page  PIC18C601/801 DS39541A-page 80 Advance Information 2001 Microchip Technology Inc. 6.3.2 16-BIT EXTERNAL TABLE WRITE (BYTE WRITE MODE) This mode allows Table Writes to byte-wide external memories. During a TBLWT cycle, the TABLAT data is presented on the upper and lower byte of the AD<15:0> bus. The appropriate WRH or WRL line is strobed based on the LSb of the TBLPTR. Figure 6-8 shows the timing associated with this mode. FIGURE 6-8: TBLWT EXTERNAL INTERFACE TIMING (16-BIT BYTE WRITE MODE) Q2 Q1 Q3 Q4 Q2 Q1 Q3 Q4 Q2 Q1 Q3 Q4 A<19:16> ALE OE 3AAAh WRH WRL AD<15:0> 0h 0h BA0 Opcode Fetch Opcode Fetch Opcode Fetch TBLWT*+ TBLWT* Cycle1 MOVLW 55h from 007554h 000Dh Q2 Q1 Q3 Q4 Ch CF33h TBLWT 56h to 199E66h 5656h 3AABh 6FF4h 3AACh 000Ch 0h from 00755Ah Memory Cycle Instruction Execution INST(PC-2) TBLWT* Cycle2 MOVWF TABLAT from 007556h Q2 Q1 Q3 Q4 Q2 Q1 Q3 Q4 0h 3AADh TBLWT 92h to 199E67h 0E55h CF33h 9292h Ch TBLWT*+ Cycle1 TBLWT*+ Cycle2 UB LB Opcode Fetch TBLWT* from 007558h MOVWF |
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