Trickle Charger and Reset Input/Output

_____________________________________________________________________

5

POWER-UP/POWER-DOWN CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

(Note 24)

250

ms

300

μs

0

μs

WARNING: Under no circumstances are negative undershoots, of any amplitude, allowed when the device is in write protection.

Note 2:

Limits at -40°C are guaranteed by design and not production tested.

Note 3:

All voltages are referenced to ground.

Note 4:

Note 5:

The use of the 250

Note 6:

Note 7:

Note 8:

Note 9:

SCL only.

Note 10: SDA and SQW and INT.

Note 11: The RST pin has an internal 50k

Note 12: Trickle charger disabled.

Note 15: Measured with a 32.768kHz crystal attached to the X1 and X2 pins.

Note 18: After this period, the first clock pulse is generated.

nal) to bridge the undefined region of the falling edge of SCL.

≥ to 250ns must be met. This is

automatically the case if the device does not stretch the low period of the SCL signal. If such a device does stretch the low

the SCL line is released.

Note 22: Guaranteed by design. Not production tested.

0V

Note 24: This delay applies only if the oscillator is enabled and running. If the EOSC bit is 1, the startup time of the oscillator is

added to this delay.