Datasheet

M41T11 DC and AC parameters
Doc ID 6103 Rev 10 21/30
Figure 15. Power down/up mode AC waveforms
Table 9. Power down/up AC characteristics
Symbol Parameter
(1)(2)
1. Valid for ambient operating temperature: T
A
= –40 to 85°C; V
CC
= 2.0 to 5.5 V (except where noted).
2. V
CC
fall time should not exceed 5 mV/µs.
Min Max Unit
t
PD
SCL and SDA at V
IH
before power down 0 ns
t
REC
SCL and SDA at V
IH
after power up 10 µs
Table 10. Power down/up trip points DC characteristics
Symbol Parameter
(1)(2)
1. Valid for ambient operating temperature: T
A
= –40 to 85°C; V
CC
= 2.0 to 5.5 V (except where noted).
2. All voltages referenced to V
SS
.
Min Typ Max
(3)
3. In 3.3 V application, if initial battery voltage is ≥ 3.4 V, it may be necessary to reduce battery voltage (i.e.,
through wave soldering the battery) in order to avoid inadvertent switchover/deselection for V
CC
– 10%
operation.
Unit
V
SO
(4)
4. Switchover and deselect point.
Battery backup switchover voltage V
BAT
– 0.80 V
BAT
– 0.50 V
BAT
– 0.30 V
AI00596
V
CC
tREC
tPD
V
SO
SDA
SCL
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