DS1260
POWER-DOWN/POWER-UP CONDITION
WARNING:
Under no circumstances are negative undershoots, of any amplitude, allowed when device is in battery
backup mode.
Water washing for flux removal may discharge internal lithium source as exposed voltage pins are
present.
NOTES:
1. Voltages are referenced to ground.
2. Load capacity is 50 pF.
3. Measured with Pins 11, 12, 13, and 3 open.
4. VTP is the point that PF is driven low.
5. Sustained ICCO2 currents above 1 mA cause a significant drop in battery voltage.
6. VBAT is the internal lithium energy source voltage.
7. VBATF is the point that BF is driven low.
8. Battery leakage is the internal energy consumed by the DS1260.
9. Storage loss is less than 1% per year at 25°C.
10. VCCI = +5 volts; tA = 25°C.
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DALLAS [ DALLAS SEMICONDUCTOR ]
