PCF21219DUGR datasheet(21/107 Pages) NXP

21 / 107 page

PCA2117

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Product data sheet

Rev. 4 — 8 April 2015

21 of 107

NXP Semiconductors

PCA2117

Automotive LCD driver for character displays

8.1.2.8

Command: Cursor_display_shift

The Cursor_display_shift command configures whether the cursor or the display moves or

shifts to right or left.

[1]

Default value.

Bits SC and RL: Cursor_display_shift moves the cursor position or the display to the right

or left without writing or reading display data. This function is used to correct a character

or move the cursor through the display.

In 2-line displays, the cursor moves to the next line when it passes the last position (40) of

the line. When the displayed data is shifted repeatedly, all lines shift at the same time;

displayed characters do not shift into the next line.

If shift display (SC = 1) is the only action performed, the address counter content does not

change. But increments or decrements with shift cursor (SC = 0).

If no other command follows, this command must be terminated with the Register_update

command.

Table 26.

Cursor_display_shift - cursor display shift bit description

Bit

Symbol

Value

Description

-R/W

fixed value

RS[1:0]

fixed value

7 to 2

000100

fixed value

1SC

shift or move cursor setting

0[1]

move cursor

cursor shift

0RL

shift or move direction setting

0[1]

left shift or move

right shift or move

Display line setting: 1 line

 40 characters; possible setups:

(1) Command Entry_mode_set: S = 1, command Cursor_display_shift: RL = 1.

(2) Command Entry_mode_set: S = 1, command Cursor_display_shift: SC = 1, RL = 1.

Fig 4.

Example of a linefeed

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