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RX
-
8581
SA
/
JE
/
NB
Page - 25 MQ372-02
8.7. Backup and Recovery
V
DD
t
F
t
R2
Back up
t
R1
V
CLK
0 V
Item Symbol Min. Typ. Max.
Power supply drop time t
F
2 µs /V
Initial power-up time t
R1
1 µs /V
10 ms /V
Clock maintenance power-up time t
R2
1 µs /V
8.8. Connection with Typical Microcontroller
Device
SCL
SDA
GND
V
DD
V
DD
SCL
SDA
t
r
R =
C
BUS
Pull up resistor
RX
-
8581
SCL
SDA
GND
V
DD
SLAVE ADRS = 1010 001∗
I
2
C-BUS
I
2
C-BUS
master