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DS12CR887 Datasheet(PDF) 4 Page - Maxim Integrated Products |
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DS12CR887 Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 23 page RTCs with Constant-Voltage Trickle Charger 4 _____________________________________________________________________ AC ELECTRICAL CHARACTERISTICS (VCC = 2.97V to 3.63V, TA = -40°C to +85°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Cycle Time tCYC 280 DC ns Pulse Width, DS Low or R/W High PWEL 130 ns Pulse Width, DS High or R/W Low PWEH 90 ns Input Rise and Fall tR, tF 30 ns R/W Hold Time tRWH 0 ns R/W Setup Time Before DS tRWS 15 ns Chip-Select Setup Time Before DS or R/W tCS 8 ns Chip-Select Hold Time tCH 0 ns Read-Data Hold Time tDHR 5 55 ns Write-Data Hold Time tDHW 0 ns Address Valid Time to AS Fall tASL 30 ns Address Hold Time to AS Fall tAHL 15 ns Delay Time DS to AS Rise tASD 15 ns Pulse Width AS High PWASH 45 ns Delay Time, AS to DS Rise tASED 55 ns Output Data Delay Time from DS or R/W tDDR (Note 8) 20 80 ns Data Setup Time tDSW 70 ns Reset Pulse Width tRWL 5 μs IRQ Release from DS tIRDS 0 2 μs IRQ Release from RESET tIRR 0 2 μs |
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