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DS3904 데이터시트(PDF) 3 Page - Dallas Semiconductor |
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DS3904 데이터시트(HTML) 3 Page - Dallas Semiconductor |
3 / 11 page Triple 128-Position Nonvolatile Digital Variable Resistor/Switch _____________________________________________________________________ 3 AC ELECTRICAL CHARACTERISTICS (VCC = +2.7V to +5.5V, TA = -40°C to +85°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Fast mode 0 400 SCL Clock Frequency (Note 7) fSCL Standard mode 0 100 kHz Fast mode 1.3 Bus Free Time between STOP and START Conditions (Note 7) tBUF Standard mode 4.7 µs Fast mode 0.6 Hold Time (Repeated) START Condition (Notes 7, 8) tHD:STA Standard mode 4.0 µs Fast mode 1.3 Low Period of SCL Clock (Note 7) tLOW Standard mode 4.7 µs Fast mode 0.6 High Period of SCL Clock (Note 7) tHIGH Standard mode 4.0 µs Fast mode 0 0.9 Data Hold Time (Notes 7, 9) tHD:DAT Standard mode 0 0.9 µs Fast mode 100 Data Setup Time (Note 7) tSU:DAT Standard mode 250 ns Fast mode 0.6 Start Setup Time tSU:STA Standard mode 4.7 µs Fast mode 20 + 0.1CB 300 Rise Time of Both SDA and SCL Signals (Note 10) tR Standard mode 20 + 0.1CB 1000 ns Fast mode 20 + 0.1CB 300 Fall Time of Both SDA and SCL Signals (Note 10) 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 CB (Note 10) 400 pF EEPROM Write Time tW (Note 11) 20 ms Startup Time tST 2ms NONVOLATILE MEMORY CHARACTERISTICS (VCC = +2.7V to +5.5V, TA = +70°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS EEPROM Writes 50,000 |
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