PCF8833USLASH2DA datasheet(24/112 Pages) PHILIPS

24 / 112 page

2003 Feb 14

Philips Semiconductors

Objective speciﬁcation

STN RGB - 132

× 132 × 3 driver

PCF8833

6.2.15

ALL PIXELS ON

The All pixels on command (DAL) can be switched off by

sending the normal display on command (NORON); (see

Section 6.2.11) or by sending the partial Display mode on

command (PTLON); see Section 6.2.10. Furthermore DAL

is left with the command DALO; see Section 6.2.14. When

DAL is active all pixels are driven, as if the display RAM

was filled with all ones (on-state). DAL does not change

the data stored in the display RAM.

When sending DAL after PTLON, only the pixels of the

partial area are driven on. When sending INVON in Partial

mode only the pixels of the partial area are inverted.

INVON is over-ruled by DAL and DALO. Pixels outside the

partial are always off. Figure 6 illustrates how DAL (all

pixels on) and DALO (all pixels off) can be used.

All pixels will be switched on regardless of the display data

RAM.

Table 24 All pixels on register bits

D/C

76543210

DEFAULT

000100011

23H

handbook, full pagewidth

MGU915

Sleep_OUT

display on

all pixel on/off

booster on

Initial state (1)

effect in

full display mode

effect in

partial display mode

send SEP

exit pixel on/off

send DAL/DALO

all pixel on/off

send DAL/DALO

all pixel on/off

send PTLON

exit pixel on/off

send NORON

exit pixel on/off

scroll mode on

normal display

partial mode on

Fig.6 Flowchart representation of DAL and DALO.

(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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