8-6. EXT. IN circuit
• EXT-IN1
COM (+) : MAX. 26.4 V, MIN. 4.8 V
V
V
Note
The board can also be operated by connecting the +5 V DC and COM (+) pins and
switching ON/OFF between the input and 0 V pins. However, the other side GND and the
0 V pin of the display unit must be the same electric potential.
• EXT-IN2
V
V
COM (–) : MAX. 0.5 V, MIN. 0 V
• Mini jack
V
V
+5V
+5V
+5V
: MAX. COM (+) +1 V
IH
MIN. COM (+) –0.8 V (or open)
: MAX. 0.5 V, MIN. 0 V
IL
: MAX. 26.4 V, MIN. 4.8 V
IH
: MAX. 1 V, MIN. 0 V (or open)
IL
: MAX. 26.4 V, MIN 4 V (or open)
IH
: MAX. 0.5 V, MIN. 0 V
IL
+5V
+5V DC
2.1kΩ
COM(+)
EXT-IN 1
Sharp
PC356NT
0V
2.1kΩ
EXT-IN 2
COM(–)
Sharp
PC356NT
+5V
330Ω
Mini jack
Sharp
PC356NT
51