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BR34L02FV-W View Datasheet(PDF) - ROHM Semiconductor

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BR34L02FV-W Datasheet PDF : 25 Pages
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BR34L02FV-W
8) Notes for noise on VCC
About bypass capacitor
Noise and surges on power line may cause the abnormal function. It is recommended that the bypass capacitors
(0.1µF) are attached on the VCC and GND line beside the device.
The attachment of bypass capacitors on the board near by connector is also recommended.
IC
PRINT BASE
capacitor 0.01 to 0.1µF
GND
VCC
capacitor 10 to 100µF
9) The notice about the connection of controller
About RS
The open drain interface is recommended for SDA port in I2C BUS. But, in the case that Tri-state CMOS interface is
applied to SDA, insert a series resister RS between SDA pin of the device and a pull up resister RPU.
It limits the current from PMOS of controller to NMOS of EEPROM.
RS also protects SDA pin from surges. Therefore, RS is able to be used though SDA port is open drain.
RPU
RS
SDA PIN
CONTROLLER
EEPROM
ACK
SCL
SDA
"H" OUTPUT OF
CONTROLLER
"L" OUTPUT OF
EEPROM
The "H" output of controller
and the "L" output of EEPROM may cause
current overload to SDA line.
Rev.A 19/24
 

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