Datasheet

M41T56 DC and AC parameters
Doc ID 6104 Rev 9 19/27
Table 9. Power down/up mode AC characteristics
Symbol Parameter
(1)
1. Valid for ambient operating temperature: T
A
= –40 to 85 °C; V
CC
= 4.5 to 5.5 V (except where noted).
Min Max Unit
t
PD
SCL and SDA at V
IH
before power-down 0 ns
t
FB
V
PFD
(min) to V
SS
V
CC
fall time 300 µs
t
RB
V
SS
to V
PFD
(min) V
CC
rise time 100 µs
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. All voltages referenced to V
SS
.
2. Valid for ambient operating temperature: T
A
= –40 to 85 °C; V
CC
= 4.5 to 5.5 V (except where noted).
Min Typ Max Unit
V
PFD
Power-fail deselect voltage 1.2 V
BAT
1.25 V
BAT
1.285 V
BAT
V
V
SO
Battery back-up switchover voltage V
BAT
V