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Z85233 Datenblatt(PDF) 21 Page - Zilog, Inc. |
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Z85233 Datenblatt(HTML) 21 Page - Zilog, Inc. |
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21 / 317 page ![]() SCC™/ESCC™ User’s Manual Interfacing the SCC/ESCC 2-2 2.2 Z80X30 INTERFACE TIMING (Continued) 2.2.1 Z80X30 Read Cycle Timing The read cycle timing for the Z80X30 is shown in Figure 2-1. The register address on AD7-AD0, as well as the state of /CS0 and /INTACK, are latched by the rising edge of /AS. R//W must be High before /DS falls to indicate a read cycle. The Z80X30 data bus drivers are enabled while CS1 is High and /DS is Low. Figure 2-1. Z80X30 Read Cycle /AS /CS0 /INTACK AD7 - AD0 R//W CS1 /DS Address Data Valid UM010901-0601 |
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