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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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COM81C17 датащи(PDF) 13 Page - SMSC Corporation |
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COM81C17 датащи(HTML) 13 Page - SMSC Corporation |
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13 / 18 page  13 Table 9 - AC CHARACTERISTICS SYMBOL DESCRIPTION MIN TYP MAX UNITS AC CHARACTERISTICS WRITE CYCLE t1 t2 t3 t4 t5 nCS, RS to nWR ↓ setup time nCS, RS hold time to nWR ↑ nWR pulse width Data BUS in setup time to nWR ↑ Data BUS in hold time to nWR ↑ 50 0 100 75 10 ns ns ns ns ns READ CYCLE t6 t7 t8 t9 t10 nCS, RS to nWR ↓ setup time nCS, RS hold time to nWR ↑ nWR pulse width Data BUS in setup time to nWR ↑ Data BUS in hold time to nWR ↑ 50 0 100 0 0 60 60 ns ns ns ns @50pf max ns @50pf max GENERAL TIMING t11 t12 t13 t14 t15 Reset Pulse Width nCP1 active to nINT nWR rising edge to nCP2 change CP1, CP2 pulse width Read Write Interval 1.0 1.0 100 300 200 µs µs @25pf µs µs ns nCP1, nCP2 data Rise Time Fall Time 30 30 ns @25pf ns @25pf CLOCK FREQUENCY Rise Time Fall Time Internal Baud Rate Mode External Baud Rate Mode Duty Cycle 30 30 11.0 1.6 40/60 ns ns MHz MHz % |
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