Datasheet

M41T81 DC and AC parameters
Doc ID 7529 Rev 10 23/29
Figure 16. Bus timing requirements sequence
Table 11. Power down/up AC characteristics
Symbol Parameter
(1)(2)
1. V
CC
fall time should not exceed 5 mV/µs.
2. Valid for ambient operating temperature: T
A
= –40 to 85 °C; V
CC
= 2.0 to 5.5 V (except where noted).
Min Typ 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 12. Power down/up trip points DC characteristics
Sym Parameter
(1)(2)
1. All voltages referenced to V
SS
.
2. Valid for ambient operating temperature: T
A
= –40 to 85 °C; V
CC
= 2.0 to 5.5 V (except where noted).
Min Typ Max Unit
V
SO
Battery backup switchover voltage V
BAT
– 0.80 V
BAT
– 0.50 V
BAT
– 0.30 V
AI00589
SDA
P
tSU:STOtSU:STA
tHD:STA
SR
SCL
tSU:DAT
tF
tHD:DAT
tR
tHIGH
tLOW
tHD:STAtBUF
SP