DC and AC parameters
M41T81
Unit
Table 11. Power down/up AC characteristics
Symbol
Parameter(1) (2)
Min
Typ
Max
tPD
trec
SCL and SDA at VIH before power down
SCL and SDA at VIH after power Up
0
nS
µS
10
1.
V
fall time should not exceed 5mV/µs.
CC
2. Valid for Ambient Operating Temperature: T = –40 to 85°C; V = 2.0 to 5.5V (except where noted).
A
CC
Table 12. Power down/up trip points DC characteristics
Sym Min
Parameter(1) (2)
VSO Battery back-up switchover voltage VBAT – 0.80 VBAT – 0.50 VBAT – 0.30
Typ
Max
Unit
V
1. All voltages referenced to V
.
SS
2. Valid for Ambient Operating Temperature: T = –40 to 85°C; V = 2.0 to 5.5V (except where noted).
A
CC
Figure 16. Bus timing requirements sequence
SDA
tBUF
tHD:STA
tR
tHD:STA
tF
SCL
tHIGH
tSU:DAT
tHD:DAT
tSU:STA
tSU:STO
P
S
tLOW
SR
P
AI00589
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STMICROELECTRONICS [ ST ]
