PCF2119RU2DB2 datasheet(35/83 Pages) NXP

35 / 83 page

PCF2119X

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Product data sheet

Rev. 7 — 15 November 2010

35 of 83

NXP Semiconductors

PCF2119x

LCD controllers/drivers

Bits SC and RL: Curs_disp_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.

The address counter content does not change if the only action performed is shift display

(SC = 1) but increments or decrements with the shift cursor (SC = 0).

10.2.2.6

Set_CGRAM

Set_CGRAM: Sets the CGRAM address bits ACG[5:0] into the address counter. Data can

then be written to or read from the CGRAM.

Remark: The CGRAM address uses the same address register as the DDRAM address.

This register consists of 7 bits. But with the Set_CGRAM command, only bit 5 to bit 0 are

set. Bit 6 can be set using the Set_DDRAM command first, or by using the auto-increment

feature during CGRAM write. All bits 6 to 0 can be read using the BF_AC instruction.

When writing to the lower part of the CGRAM, ensure that bit 6 of the address is not set

(e.g. by an earlier DDRAM write).

10.2.2.7

Set_DDRAM

Set_DDRAM: Sets the DDRAM address bits ADD[6:0] into the address counter. Data can

then be written to or read from the DDRAM.

Table 21.

Set_CGRAM bit description

Bit

Symbol

Value

Description

see Table 10

R/W

-0

7 to 6

fixed value

5 to 0

ACG

000000 to

111111

set CGRAM address

Table 22.

Set_DDRAM bit description

Bit

Symbol

Value

Description

see Table 10

R/W

-0

fixed value

6 to 0

ADD

0000000 to

1111111

set DDRAM address

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