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DS1338U-3+ Datasheet(PDF) 3 Page - Maxim Integrated Products |
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DS1338U-3+ Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 16 page DS1338 I2C RTC with 56-Byte NV RAM 3 of 16 DC ELECTRICAL CHARACTERISTICS ( VCC = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VBAT = 3.0V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL MIN TYP MAX UNITS VBAT Current (OSC ON); VBAT = 3.7V, SQW/OUT OFF (Note 7) IBATOSC1 800 1200 nA VBAT Current (OSC ON); VBAT = 3.7V, SQW/OUT ON (32kHz) (Note 7) IBATOSC2 1025 1400 nA VBAT Data-Retention Current (Osc Off); VBAT = 3.7V (Note 7) IBATDAT 10 100 nA AC ELECTRICAL CHARACTERISTICS (VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C) (Note 1) PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS SCL Clock Frequency fSCL Fast mode 100 400 kHz Standard mode 0 100 Bus Free Time Between STOP and START Condition tBUF Fast mode 1.3 µ s Standard mode 4.7 Hold Time (Repeated) START Condition (Note 8) tHD:STA Fast mode 0.6 µ s Standard mode 4.0 LOW Period of SCL Clock tLOW Fast mode 1.3 µ s Standard mode 4.7 HIGH Period of SCL Clock tHIGH Fast mode 0.6 µ s Standard mode 4.0 Setup Time for Repeated START Condition tSU:STA Fast mode 0.6 µ s Standard mode 4.7 Data Hold Time (Notes 9, 10) tHD:DAT Fast mode 0 0.9 µ s Standard mode 0 Data Setup Time (Note 11) tSU:DAT Fast mode 100 ns Standard mode 250 Rise Time of Both SDA and SCL Signals (Note 12) tR Fast mode 20 + 0.1CB 300 ns Standard mode 20 + 0.1CB 1000 Fall Time of Both SDA and SCL Signals (Note 12) tF Fast mode 20 + 0.1CB 300 ns Standard mode 20 + 0.1CB 300 Setup Time for STOP Condition tSU:STO Fast mode 0.6 µ s Standard mode 4.0 Capacitive Load for Each Bus Line CB (Note 12) 400 pF I/O Capacitance (SDA, SCL) CI/O (Note 13) 10 pF Oscillator Stop Flag (OSF) Delay tOSF (Note 14) 100 ms |
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