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DS620 Datenblatt(PDF) 4 Page - Dallas Semiconductor |
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DS620 Datenblatt(HTML) 4 Page - Dallas Semiconductor |
4 / 15 page DS620 Digital Thermometer and Thermostat 4 of 15 AC ELECTRICAL CHARACTERISTICS EEPROM AC Electrical Characteristics PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS EEPROM Write Cycle Time TWR -40°C to +85°C 10 ms -40°C ≤ TA ≤ +85°C (Note 1) 10k 20k EEPROM Writes NEEWR TA = +25°C (Note 1) 40k 80k writes EEPROM Data Retention tEEDR -40°C to +125°C (Note 2) 10 years 2-Wire AC Electrical Characteristics PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SCL Frequency fSCL 0 400 KHz Bus Free Time Between a STOP and START Condition tBUF 1.3 µs START and Repeat START Hold Time from Falling SCL tHD:STA (Note 3, 4) 0.6 µs Low Period of SCL tLOW (Note 3) 1.3 µs High Period of SCL tHIGH (Note 3) 0.6 µs Repeated START Condition Setup Time to Rising SCL tSU:STA (Note 3) 0.6 µs Data-Out Hold Time from Falling SCL tHD:DAT (Note 3) 0 0.9 µs Data-In Setup Time to Rising SCL tSU:DAT (Note 3) 100 ns Rise Time of SDA and SCL tR (Note 3, 5) 20 + 0.1xCB 1000 ns Fall Time of SDA and SCL tF (Note 3, 5) 20 + 0.1xCB 300 ns STOP Setup Time to Rising SCL TSU:STO 0.6 µs Capacitive Load for Each BUS Line CB 400 pF Input Capacitance CI 10 pF Spike Pulse Width that can be Suppressed by Input Filter 0 50 ns Note 1: VDD must be 2.0V to 3.5V. Note 2: Write done at 25°C. Note 3: All values referenced to 0.9 VDD and 0.1 VDD. Note 4: After this period the first clock pulse is generated. Note 5: For example, if CB = 300pF, then tR(MIN) = tF(MIN) = 50ns. |
Ähnliche Teilenummer - DS620 |
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Ähnliche Beschreibung - DS620 |
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