20-101-1196 Rabbit Semiconductor, 20-101-1196 Datasheet - Page 108
![MODULE RABBITCORE RCM3900](/photos/6/74/67481/20-101-1196_sml.jpg)
20-101-1196
Manufacturer Part Number
20-101-1196
Description
MODULE RABBITCORE RCM3900
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-101-1196.pdf
(168 pages)
Specifications of 20-101-1196
Module/board Type
MPU Core Module
For Use With/related Products
RCM3900
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
20-101-1196
316-1155
316-1155
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C.2 Contrast Adjustments for All Boards
Starting in 2005, LCD/keypad modules were factory-configured to optimize their contrast
based on the voltage of the system they would be used in. Be sure to select a KDU3V LCD/
keypad module for use with the Prototyping Board for the RCM3900 — these modules
operate at 3.3 V. You may adjust the contrast using the potentiometer at R2 as shown in
Figure C-3. LCD/keypad modules configured for 5 V may be used with the 3.3 V Proto-
typing Board, but the backlight will be dim.
You can set the contrast on the LCD display of pre-2005 LCD/keypad modules by adjust-
ing the potentiometer at R2 or by setting the voltage for 3.3 V by connecting the jumper
across pins 3–4 on header J5 as shown in Figure C-3. Only one of these two options is
available on these LCD/keypad modules.
RabbitCore RCM3900 User’s Manual
NOTE: Older LCD/keypad modules that do not have a header at J5 or a contrast adjust-
ment potentiometer at R2 are limited to operate only at 5 V, and will not work with the
Prototyping Board for the RCM3900. The older LCD/keypad modules are no longer
being sold.
Figure C-3. LCD/Keypad Module Contrast Adjustments
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