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Z8018233FSC 数据表(PDF) 85 Page - Zilog, Inc. |
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Z8018233FSC 数据表(HTML) 85 Page - Zilog, Inc. |
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85 / 109 page ![]() 3-85 Z80182/Z8L182 ZILOG INTELLIGENT PERIPHERAL PRELIMINARY Zilog DS971820600 0 Address /IROQ T1 T2 TW T3 T1 13 25 9 /RD /WR T2 TW T3 I/O Read Cycle I/O Write Cycle 28 29 28 29 22 Figure 92. CPU Timing Ø 45 46 45 45 47 17 48 18 CPU or DMA Read/Write Cycle (Only DMA Write Cycle for /TENDi) T1 T2 Tw T3 T1 [3] [4] [2] [1] /DREQi (At level sense) /DREQi (At edge sence) /TENDi ST DMA Control Signals [ 1] tDRQS and tDRQH are specified for the rising edge of clock followed by T3. [2] tDRQS and tDRQH are specified for the rising edge of clock. [3] DMA cycle starts. [4] CPU cycle starts. Figure 93. DMA Control Signals |
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