PCF8833USLASH2DA datasheet(22/112 Pages) PHILIPS

22 / 112 page

2003 Feb 14

Philips Semiconductors

Objective speciﬁcation

STN RGB - 132

× 132 × 3 driver

PCF8833

6.2.10

PARTIAL MODE ON

Partial mode on (PTLON) turns on the partial Display

mode. Only one partial display size can be chosen. Normal

mode, Scroll mode, DALO and DAL are exited with this

command. When sending DAL after PTLON, only the

pixels of partial area are driven on.

A normal Display mode command is used to exit the Partial

mode. How the partial display area can be programmed is

given in Section 6.2.23.

A sequence showing how the command PTLON can be

used is illustrated in Fig.5.

Table 19 Partial mode on register bits

D/C

76543210

DEFAULT

000010010

12H

handbook, full pagewidth

MGU914

send PTLAR

send PTLON

Sleep_OUT

display on

normal display

booster on

partial area def

partial mode on

send PTLAR

send NORON

send SEP

partial area def

normal display

scroll mode

send DISPOFF

send DISPON

display off

wait until

display supply

voltage is settled

display on

optional

exit partial mode

optional

Initial state (1)

Fig.5 Sequence how PTLON can be used.

(1) If the initial state is Sleep_IN, the same sequence is valid, but Sleep_OUT has to be sent to see the effect on the display (after display voltage has

settled).

When sending DAL after PTLON, only the pixels of partial area are driven on. When sending INVON, in Partial mode only the pixels of partial area are

inverted. INVON is over-ruled by DAL and DALO. Pixels outside partial area always stay off.

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