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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M30620FCAFP датащи(PDF) 73 Page - Mitsubishi Electric Semiconductor |
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M30620FCAFP датащи(HTML) 73 Page - Mitsubishi Electric Semiconductor |
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73 / 274 page  Mitsubishi microcomputers M16C / 62A Group SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER DMAC 73 Single-chip mode Memory expansion mode Transfer unit Bus width Access address Microprocessor mode No. of read No. of write No. of read No. of write cycles cycles cycles cycles 16-bit Even 1111 8-bit transfers (BYTE= “L”) Odd 1111 (DMBIT= “1”) 8-bit Even — — 1 1 (BYTE = “H”) Odd — — 1 1 16-bit Even 1111 16-bit transfers (BYTE = “L”) Odd 2222 (DMBIT= “0”) 8-bit Even — — 2 2 (BYTE = “H”) Odd — — 2 2 Table 1.13.2. No. of DMAC transfer cycles Internal memory External memory Internal ROM/RAM Internal ROM/RAM SFR area Separate bus Separate bus Multiplex No wait With wait No wait With wait bus 12 2 1 2 3 Coefficient j, k (2) DMAC transfer cycles Any combination of even or odd transfer read and write addresses is possible. Table 1.13.2 shows the number of DMAC transfer cycles. The number of DMAC transfer cycles can be calculated as follows: No. of transfer cycles per transfer unit = No. of read cycles x j + No. of write cycles x k |
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