CFA633-RDI-KS datasheet(22/88 Pages) CRYSTAIFONTZ

22 / 88 page

Crystalfontz America, Inc.

Data Sheet Release Date 2012/02/21

www.crystalfontz.com

CFA633-RDI-KS LCD Module (Hardware v2.0 / Firmware s2v1)

February 2012

Page 22

SUPPLY VOLTAGES AND CURRENT

DRIVING METHOD SPECIFICATION

Duty

1/16

Bias

1.5

SUPPLY VOLTAGE

Supply voltage for driving the LCD module (logic)

+4.75v

+5.0v

+5.25v

Supply voltage for backlight*

+11v

+12v

+13v

Supply voltage to run fans*

+4.75v

+12v

+13v

*JP7 must be opened for the operating range of +12v fans (optional) to be different from +12v

backlights (listed in this table). If JP7 is closed (which is the default), then the voltage specifi-

cation range for backlights must be observed for both backlights AND fans.

TYPICAL CURRENT CONSUMPTION

SPECIFICATION

+5v for logic (LCD + microcontroller)

12 mA

+12v for backlight (at 100%)

60 mA

Note

Draw on +12v for optional fans will vary, depending on user equipment

connected to FAN1 through FAN4.



Maximum continuous current draw must be <1.5 A per fan

connector, no more than 4 A total.



Maximum pulsed current draw may be up to 5 A per connector. The

pulse width must be less than 50 mS. (This pulse specification

allows for the fan's start-up current spike.)

GPIO CURRENT LIMITS SPECIFICATION

Sink

25 mA

Source

10 mA

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