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DS32C35-33IND Datasheet(PDF) 4 Page - Maxim Integrated Products |
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DS32C35-33IND Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 21 page Accurate I2C RTC with Integrated TCXO/Crystal/FRAM 4 _____________________________________________________________________ AC ELECTRICAL CHARACTERISTICS (VCC = 2.7V to 3.63V, TA = -40°C to +85°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Fast mode 100 400 SCL Clock Frequency fSCL Standard mode 0 100 kHz Fast mode 1.3 Bus Free Time Between STOP and START Conditions tBUF Standard mode 4.7 μs Fast mode 0.6 Hold Time (Repeated) START Condition (Note 7) tHD:STA Standard mode 4.0 μs Fast mode 1.3 Low Period of SCL Clock tLOW Standard mode 4.7 μs Fast mode 0.6 High Period of SCL Clock tHIGH Standard mode 4.0 μs Fast mode 0 0.9 Data Hold Time (Notes 8, 9) tHD:DAT Standard mode 0 μs Fast mode 100 Data Setup Time (Note 10) tSU:DAT Standard mode 250 ns Fast mode 0.6 Setup Time for Repeated START Condition tSU:STA Standard mode 4.7 μs Fast mode 300 Rise Time of Both SDA and SCL Signals (Note 11) tR Standard mode 20 + 0.1CB 1000 ns Fast mode 300 Fall Time of Both SDA and SCL Signals (Note 11) tF Standard mode 20 + 0.1CB 300 ns Fast mode 0.6 Setup Time for STOP Condition tSU:STO Standard mode 4.0 μs Capacitive Load for Each Bus Line (Note 11) CB 400 pF 10 I/O Capacitance INT/SQW, 32kHz, SCL, SDA CI/O Outputs = high impedance 18 pF Pushbutton Debounce PBDB (See the Pushbutton Reset Timing diagram) 250 ms Reset Active Time tRST 250 ms Oscillator Stop Flag (OSF) Delay tOSF (Note 12) 100 ms FRAM Data Retention tDR 10 Years |
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