DS17885/DS17887

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BURST MODE TIMING WAVEFORM

NOTES:

1) Typical values are at +25°C and nominal supplies.

2) Outputs are open.

4) Applies to the AD0 to AD7 pins, and the SQW pin when each is in a high-impedance state.

5) The IRQ and PWR pins are open-drain.

6) Measured with a load of 50pF + 1 TTL gate.

7) Wake-up kickstart timeout generated only when the oscillator is enabled and the countdown chain is

not reset.

9) The DS17887 keeps time to an accuracy of ±1 minute per month during data retention time for the

registers of the DS17887.

12) RTC modules can be successfully processed through conventional wave-soldering techniques as long

as temperature exposure to the lithium energy source contained within does not exceed +85°C. Post-

solder cleaning with water-washing techniques is acceptable, provided that ultrasonic vibration is not

used.