Zilog S3F80QB - Manual (Page 19)

UM026703-1014 High-Power Infrared-Emitting Diode
S3F80QB Development Kit
User Manual
16
This IR receiver is connected to the P3.0 pin of the MCU by placing J9 into the 2-3 posi-
tion. To learn more about the TSOP31238 device, visit
http://www.vishay.com/docs/
82492/tsop312.pdf.
High-Power Infrared-Emitting Diode
The TSAL6200 diode (D3, D4, D5, D6) is an infrared (940 nm wavelength) emitting diode
employing GaAlAs/GaAs technology with high radiant power, and molded in a blue-gray
plastic package. An image of the TSAL6200 device is shown in Figure 16.
Of two pairs of IR LEDs, D3/D4 and D5/D6, the D3/D4 pair is activated by placing
Jumper J10 into the 2-3 position for an active High transmission. The D5/D6 pair is acti-
vated by placing a shunt onto J10 position 1-2 for an active Low transmission. Either of
these jumper settings connects its correlated pair to P3.1 on the MCU.
To learn more about the TSAL6200 device, visit http://www.vishay.com/docs/81010/
tsal6200.pdf .
Reset Circuit
The reset circuit features a 100 KΩ pull-up resistor R8 and SW1. This circuit resets the
S3F80QB MCU when SW1 is pressed. See Figure 17 for a representation of the reset cir-
cuit.
Figure 16. TSAL6200 Infrared Emitting Diodes