GP2W3270YP0F
Fig.1 Recommended External Circuit
* RXD Equipment circuit
RXD
TR1
TR2
300k
typ.
* Don’t care
**
The pulse width is constant without depending on the
transmission rate and the light intensity of input signal.
■Truth Table
Mode SD TXD TXD-RC Input signal LED RXD
00 0 No Off 1
00 0 IrDA Off 0**
0 0 1 * On(60mA) 0
0 1 0 * On(60mA) 0
Remote control operation 1 0 1 * On(200mA) pull-up
Shutdown mode 1 0 0 * Off pull-up
(Note) Please choose the most suitable CX
according to the noise level and noise frequency
of power supply.
Depending on noise level and noise frequency
of power supply, C
X does not work well.
There are cases that some pulse noises
from RXD other than signal will occur
in certain communication area.
Please check by finish product that there are no
problem at all communication area and data rate.
If there are any problem, please check
by inserting R
X (1 to 15)in the circuit drawing.
Although there is no problem to distribute the voltage
supply of Vcc, VIO, and VLED terminal, please
apply the voltage to Vcc terminal first.
Components circuit Recommended values
GND
GND
V
CC
V
CC
V
IO
V
IO
SD
SD
TXD-
RC
TXD-
RC
TXD
TXD
RXD
RXD
LEDA
V
LEDA
SGND
C
X
C
X
R
X
Sheet No.: E3-A01101EN
6