STLED524 datasheet(20/72 Pages) STMICROELECTRONICS

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Detailed description

STLED524

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DocID026217 Rev 1

4.4.2

Display size

If DISPSIZE bit is set to 1, the content of columns 20-23 is always linked to pattern 1

regardless of the value of DISP bits. Columns 0-19 can still be used as a display, while

columns 20-23 can be used for other functions.

If DISPSIZE bit is set to 1, the content of pattern 2 is also limited to columns 0-19 only.

Columns 20-23 are not displayed during scrolling.

The minimum number of scroll steps in horizontal direction is reduced to 20, if DISPSIZE =

Table 13. Register addresses in pattern 1

Address

Dimming register

Address

Slope and delay register

00h

D1_A0[7:0]

01h

P1CYCA0[1:0]

P1DLYA0[1:0]

02hh

D1_A1[7:0]

03h

P1CYCA1[1:0]

P1DLYA1[1:0]

……

…

EEh

D1_X4[7:0]

EFh

P1CYCX4[1:0]

P1DLYX4[1:0]

Table 14. Register addresses in pattern 2

Address

Dimming register

Address

Slope and delay register

00h

D2_A0[7:0]

01h

P2CYCA0[1:0]

P2DLYA0[1:0]

02h

D2_A1[7:0]

03h

P2CYCA1[1:0]

P2DLYA1[1:0]

……

…

EEh

D2_X4[7:0]

EFh

P2CYCX4[1:0]

P2DLYX4[1:0]

Table 15. Content of columns 20-23

DISP

DISPSIZE

COL 0-19

COL 20-23

Blank

Pattern 1

Pattern 2

Blank

Pattern 1

Pattern 2

Pattern 1

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