M41T81S View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'M41T81S' PDF : 31 Pages View PDF
M41T81S
DC and AC parameters
Table 11. Power down/up AC characteristics
Symbol
Parameter(1)and(2)
Min
Typ
Max
Unit
tPD
SCL and SDA at VIH before Power Down
0
nS
trec
SCL and SDA at VIH after Power Up
10
µS
1. VCC fall time should not exceed 5mV/µs.
2. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.7 to 5.5V (except where noted).
Table 12. Power down/up trip points DC characteristics
Sym
Parameter(1)and(2)
Min
Typ
Max Unit
Power-fail Deselect
VPFD Hysteresis
VBAT <
Battery Back-up Switchover Voltage VPFD
VSO (VCC < VBAT; VCC < VPFD)
VBAT >
VPFD
Hysteresis
2.5
2.6
2.7
V
25
mV
VBAT
V
VPFD
V
40
mV
1. All voltages referenced to VSS.
2. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.7 to 5.5V (except where noted).
Figure 17. Bus timing requirements sequence
SDA
tBUF
SCL
P
tHD:STA
tR
tF
tHIGH
S
tLOW
tSU:DAT
tHD:DAT
tHD:STA
tSU:STA
SR
tSU:STO
P
AI00589
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