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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PC87570 датащи(PDF) 140 Page - National Semiconductor (TI) |
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PC87570 датащи(HTML) 140 Page - National Semiconductor (TI) |
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140 / 168 page  140 Device Specifications www.national.com Host Processor Interface Input Signals tAR 19-16 Read address valid Before HIORD or HMEMRD FE 30 ns 30 ns tAW 19-17 Address valid to write active Before HIOWR or HMEMWR FE 30 ns 30 ns tDH 19-17 Write data hold After HIOWR or HMEMWR RE 6 ns 6 ns tDS 19-17 Write data setup Before HIOWR or HMEMWR RE 30 ns 30 ns tHIPONh 19-27 Host input signals hold After HPWRON RE 20 ns 20 ns tHIPONs 19-27 Host input signals setup Before HPWRON FE 20 ns 20 ns tMCSh 19-16, 19-17 HMEMCS hold After HMEMWR or HMEMRD RE 10 ns 10 ns tMCSs 19-16, 19-17 HMEMCS setup Before HMEMWR or HMEMRD FE 12 ns 12 ns tRA 19-16 Read address hold After HIORD or HMEMRD RE 00 tRCU 19-16 Read cycle update After HIORD or HMEMRD RE 45 ns 45 ns tRD 19-16 HIORD or HMEMRD width FE to RE 60 ns 60 ns tWA 19-17 Write address hold After HIOWR or HMEMWR RE 00 tWCU 19-17 Write cycle update2 After HIOWR or HMEMWR RE 45 ns 45 ns tWR 19-17 HIOWR or HMEMWR width FE to RE 60 ns 60 ns RC 19-16 Read cycle tAR + tRD + tRCU 123 ns 123 ns WC 19-17 Write cycle tAW + tWR +tWC 123 ns 123 ns tRDYH 19-16, 19-17 HIOWR , HMEMWR, HIORD or HMEMRD hold After IOCHRDY RE 0 0 tWRR 19-17 HIORD or HMEMRD active After HIOWR or HMEMWR RE 80 ns 80 ns Host Processor Interface Output Signals tHZ 19-16 Read data floating After HIORD or HMEMRD RE 6 ns 25 ns 6 ns 25 ns tRI 19-16 Clear IRQ1, 12, 11 After HIORD RE 55 ns 55 ns tRVD 19-16 Read data valid After HIORD or HMEMRD FE 55 ns 55 ns tRDH 19-16 Read data hold After HIORD or HMEMRD RE 4 ns 4 ns Symbol Figure Description Reference Conditions VCC = 5 V 10% VCC = 3.3 V ± 10% Min Max Min Max |
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