RPM872-H12 데이터 시트보기 (PDF) - ROHM Semiconductor
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RPM872-H12 Datasheet PDF : 7 Pages
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Photo Link Module
zTerminal description
Pin No Terminal
1, 4
GND
2
VIO
3
VCC
5 PWDOWN
Circuit
VIO
RPM872-H12
Function
GND
Pin1 and Pin4 must be connected
to the ground.
VIO
Supply voltage for I/O pins.
(PWDOWN, RXD, TXD)
VCC
Supply voltage for Transceiver circuits.
For preventing from infection, connect
a capacitor between VCC (3pin) and
GND (4pin).
Power-down Control Terminal
H : POWERDOWN
L : OPERATION
CMOS Logic Level Input
When input is H, it will stop the receiving
circuit, Pin-PD current and transmitting
LED operation.
6
RXD
PWDOWN
VIO
VIO
300k
Receiving Data Output Terminal
CMOS Logic Level Input
When PWDOWN (5pin)=H, the RXD
output will be pulled up to VIO at
approximately 300kΩ.
7
TXD
VIO
600k
Transmitting Data Input Terminal
H : LED (PWDOWN=L)
CMOS Logic Level Output
Holding TXD="H" status, LED will be
turn off approximately 48µs.
8
LEDA
− Shield Case
LED ANODE Terminal
Other power source can be used
LED
difference between LEDVCC and VCC.
This can be connected to battery kinds
of unegulated constant source by internal
constant current driver.
Connect to Ground.
Rev.A
3/6
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