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DS1672 Datasheet(PDF) 6 Page - Maxim Integrated Products |
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DS1672 Datasheet(HTML) 6 Page - Maxim Integrated Products |
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6 / 15 page  DS1672 6 of 15 POWER-UP/POWER-DOWN CHARACTERISTICS (TA = -40°C to +85°C) PARAMETER SYMBOL MIN TYP MAX UNITS VCC Detect to RST (VCC Falling) tRPD 10 µs VCC Detect to RST (VCC Rising) (Note 11) tRPU 250 ms VCC Fall Time; VPF(MAX) to VPF(MIN) tF 300 µs VCC Rise Time; VPF(MIN) to VPF(MAX) tR 0 µs Note 11: If the EOSC bit in the control register is set to logic 1, t RPU is equal to 250ms plus the startup time of the crystal oscillator. Warning: Negative undershoots below –0.3V while the part is in battery-backed mode can cause loss of data. Figure 1. Timing Diagram SCL START SDA STOP tBUF REPEATED START tHD:STA tLOW tHD:STA tHD:DAT tSU:DAT tHIGH tSU:STA tF tSU:STO Figure 2. Power-Up/Power-Down Timing OUTPUTS VCC VPF(max) INPUTS HIGH IMPEDANCE RST DON'T CARE VALID RECOGNIZED RECOGNIZED VALID tRPD VPF(min) tF tPD tR tRPU |
Similar Part No. - DS1672 |
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Similar Description - DS1672 |
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