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DS12885QN Datasheet(PDF) 3 Page - Maxim Integrated Products |
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DS12885QN Datasheet(HTML) 3 Page - Maxim Integrated Products |
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3 / 22 page  Real-Time Clock _____________________________________________________________________ 3 DC ELECTRICAL CHARACTERISTICS (VCC = 0V, VBAT = 3.0V, TA = over the operating range, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VBAT Current (OSC On); TA = +25°C, VBACKUP = 3.0V IBAT (Note 8) 500 nA VBAT Current (Oscillator Off) IBATDR (Note 8) 100 nA AC ELECTRICAL CHARACTERISTICS (VCC = 4.5V to 5.5V, TA = over the operating range.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Cycle Time tCYC 385 DC ns Pulse Width, DS Low or R/W High PWEL 150 ns Pulse Width, DS High or R/W Low PWEH 125 ns Input Rise and Fall tR, tF 30 ns R/W Hold Time tRWH 10 ns R/W Setup Time Before DS/E tRWS 50 ns Chip-Select Setup Time Before DS or R/W tCS 20 ns Chip-Select Hold Time tCH 0ns Read-Data Hold Time tDHR 10 80 ns Write-Data Hold Time tDHW 0ns Address Valid Time to AS Fall tASL 30 ns Address Hold Time to AS Fall tAHL 10 ns Delay Time DS/E to AS Rise tASD 20 ns Pulse Width AS High PWASH 60 ns Delay Time, AS to DS/E Rise tASED 40 ns Output Data Delay Time from DS or R/W tDDR 20 120 ns Data Setup Time tDSW 100 ns Reset Pulse Width tRWL 5µs IRQ Release from DS tIRDS 2µs IRQ Release from RESET tIRR 2µs |
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