Matrix-orbital LCD2041 Manual de usuario descargar pdf (Pagina 24)

Examples

Crystal Speed 16 Mhz

Desired BAUD 13,500

speed =

crystalspeed

8∗ DesiredBaud

− 1

speed = 148.15− 1

speed =

16, 000, 000

8∗ 13, 500

− 1

speed = 147.15

• LSB = 0x93 (rounded)

• MSB = 0x00

• Intended Baud Rate: 13,500 baud Actual Baud Rate:

16,000,000

8(147+1)

=13,514 Percent Difference: 0.1%

NOTES

• Results from the formula are rounded down to the nearest whole number (i.e 73.07

= 73).

• This formula becomes less acurate as baud rates increase, due to rounding.

• Place the speed result backwards into the formula to receive the actual baud rate.

(Baud =

CrystalSpeed

8(speed+1)

)

• The actual baud rate must be within 3% of the intended baud rate for the device to

communicate.

NOTES

• This command is not available in I

C mode.

5 Text

5.1 Introduction

The LCD2041 is an intelligent display module, designed to reduce the amount of code necessary to begin

displaying data. This means that it is able to display all ASCII formated characters and strings that are sent

to it, which are deﬁned in the current character set. The display module will begin displaying text at the top

left corner of the display area, known as home, and continue to print to the display as if it was a page on a

typewriter. When the text reaches the bottom right row, it is able to automatically scroll all of the lines up

and continue to display text, with the auto scroll option set to on.

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Matrix-orbital LCD2041 Manual de usuario Pagina 24