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DS17485S-5 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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DS17485S-5 Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 30 page Real-Time Clocks _____________________________________________________________________ 3 DC ELECTRICAL CHARACTERISTICS (VCC = 0V, VBAT = 3.0V, TA = Over the operating range, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VBAT or VBAUX Current (Oscillator On); TA = +25°C, VBAT = 3.0V IBAT (Note 7) 500 700 nA VBAT or VBAUX Current (Oscillator Off) IBATDR (Note 7) 50 400 nA AC ELECTRICAL CHARACTERISTICS ( VCC = +4.5V to +5.5V, TA = Over the operating range, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Cycle Time tCYC 240 DC ns Pulse Width, RD or WR Low PWRWL 120 ns Pulse Width, RD or WR High PWRWH 80 ns Input Rise and Fall tR, tF 30 ns Chip-Select Setup Time Before RD or WR tCS 20 ns Chip-Select Hold Time tCH 0ns Read-Data Hold Time tDHR 10 50 ns Write-Data Hold Time tDHW 0ns Address Setup Time to ALE Fall tASL 20 ns Address Hold Time to ALE Fall tAHL 10 ns RD or WR High Setup to ALE Rise tASD 25 ns Pulse Width ALE High PWASH 40 ns Delay Time ALE Low to RD Low tASED 30 ns Output Data Delay Time from RD tDDR (Note 8) 20 120 ns Data Setup Time tDSW 30 ns IRQ Release from RD tIRD 2µs |
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