Data Sheet

SD2405ALPI IIC 串行接口的实时时钟IC
!
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
V
DD
Main Power Supply
!
3.3
!
5.5
V
!
!
I
DD1
Supply Current
V
DD
=5.0V
2.5uA
!
2mA
!
!
1
V
DD
=3.3V
2.0uA
!
2mA
!
I
DD2
Supply Current win I IC Active
V
DD
=5V
!
40
120
µ A
!
I
BAT
Battery Supply Current
V
BAT
=3V
!
1000
!
nA
!
I
L1
Input Leakage Current On SCL
!
!
100
!
nA
!
I
LO
I/O Leakage Current On SDA
!
!
100
!
nA
!
V
BATHYS
V
BAT
Hysteresis
!
50
100
200
mV
!
INT V
OL
Output Low Voltage
V
DD
=5V
I
OL
=3mA
!
!
0.4
V
!
V
DD
=5V
I
OL
=3mA
!
!
0.4
V
!
!
General RAM
10. instructions
1. To prevent the noise of the circus, two capacities should be laid near the chip.
Typically 0.1uF and 22uF
11. Application reference circuit
12. Absolute Maximum Rating
Voltage on VDD,SCL,SDA,and INT pins(Respect to Ground)…… ....…………………-0.5V to
7.0V Lead
Temperature(Soldering,10s)… … …........…………………....……… ..…………….260 ℃ /10s
13. DC CHARACTERISTICS
14. power down timing sequence
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
V
DD br
V
DD
negative Siewrate
10
V/ms