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J10 - Backlight / Inverter Control
3.10.
J10 4 Pin Molex 53261-0471
Pin
Signal
Backlight power (connected to J6 pin 5)
1
2
Ground
3
Backlight on/off control; can also be used as PWM for dimming
4
Backlight brightness control
This connector is used to power and control the panel backlight. The sense of the on/off
control (active high or low) is set in the firmware. The sense and range of the brightness
voltage output is also set by the board firmware.
JP1 – COM1 / Programming Header
3.11.
This connector is used for communicating using the COM1 serial port. It has a driver
enable for use with RS485 transceivers. It also has a hardware reset signal for the SLCD+
processor.
JP1 10 Pin Molex 53261-1071
Pin
Signal
1
VCC (typ. 3.3V) – can be used to power external transceiver
2
DE (active high) – use if needed to enable external 422 / 485 driver
3
Do not use
RxD1 – Com1 input
4
5
Do not use
6
Do not use
7
GND
8
RESET- input; drive low to hardware reset the SLCD+ processor
9
Do not use
10
TxD1 – Com1 output
TxD1, RxD1, DE, RESET- electrical specifications:
Input voltage
Input voltage
Input voltage
Output current High
Output current Low
SLCD+ Controller Manual V1.1
-0.3 / VCC+.03
Absolute Min / Max
0.8xVCC
High min
0.2xVCC
Low max
1mA
Min, Vout = 0.9xVCC
-1mA
Min, Vout = 0.1xVCC
8/14/2009
Page 16
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