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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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YMF721 датащи(PDF) 24 Page - LSI Computer Systems |
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YMF721 датащи(HTML) 24 Page - LSI Computer Systems |
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24 / 41 page  YMF721 July 10, 1997 - 24 - AC Characteristics 1. CPU interface (Refer to Fig. 1, 2, 3) Notes : VSS=0[V], TOP=0~70 °C, V DD=5.0 ±0.25[V] 2. Serial audio interface (Refer to Fig. 4.) Notes : VSS=0[V], TOP=0~70 °C, V DD=5.0 ±0.25[V] Sampling frequency (fs) is 44.1 kHz. Duty factor is measured at 1/2 VDD 3. Others Notes : VSS=0[V], TOP=0~70 °C /RESETSEL = "H". Duty factor is measured at 1/2 VDD Item Symbol Min. Typ. Max. Unit Address set up to /IOW, /IOR active tAS 30 ns Address hold to /IOW, /IOR inactive tAH 10 ns /IOW Write Pulse Width tWW 50 ns Write Data set up to /IOW active tWDS 10 ns Write Data hold to /IOW inactive tWDH 10 ns /IOR Read Pulse Width tRW 80 ns Read Data access time tACC 60 ns Read Data hold from /IOR inactive tRDH 10 ns Chip select setup time tCS 5ns Chip select hold time tCH 10 ns RESET Pulse Width tRST 100 ms Item Symbol Condition Min. Typ. Max. Unit CLKO frequency fCLKO16 - 16.9344 - MHz CLKO duty DCLKO16 40 50 60 % BCO frequency fBCK - 2.1168 - MHz BCO duty DBCLK 40 50 60 % Serial data setup time tDS BCO - /DO3-0 - 118 - ns Serial data hold tim tDH BCO ¯ /DO3-0 - 118 - ns LRO setup time tLRS BCO - /LRO - 118 - ns LRO hold time tLRH BCO ¯ /LRO - 118 - ns WCO setup time tWCS BCO - /WCO - 118 - ns WCO hold time tWCH BCO ¯ /WCO - 118 - ns Item Symbol Condition Min. Typ. Max. Unit Master Clock Frequency f33 VDD=5.0 ±0.25[V] 33.8688 MHz (X’tal 33) Duty Df33 VDD=3.3 ±0.3[V] 40 50 60 % Power Consumption IOP1 VDD=5.25[V] 40 50 mA (during normal operation) IOP2 VDD=3.60[V] 25 30 mA Power Consumption IOP3 VDD=5.25[V] 25 50 mA (during power down mode) IOP4 VDD=3.60[V] 15 30 mA |
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