Epson RX-8025SA - External Connection Example

RX - 8025 SA / NB
Page - 27 ETM10E-04
8.9. External Connection Example
Note : Pull-up resistor connections.
• SCL and SDA
Connect to the system-power-supply .
• / INTA and / INTB
When , uses these interrupt signals at battery backup, connect these pins to backup power supply.
RX - 8025
V
DD
GND
+
4.7
µ
F
0.1
µ
F
Schottky
Barrier
Diode
Note
V DD
D 1
SCL
/ INTA
/ INTB
FOE
FOUT
SDA
TEST
OPEN
Note : Use a secondary cell or lithium cell. A diode is not required when using a secondary cell.
When using a lithium cell, be sure to use a diode. Contact the battery manufacturer for
details regarding applied resistance values.