PCF8833USLASH2DA datasheet(38/112 Pages) PHILIPS

38 / 112 page

2003 Feb 14

Philips Semiconductors

Objective speciﬁcation

STN RGB - 132

× 132 × 3 driver

PCF8833

handbook, full pagewidth

126

129

130

131

127

128

123

122

121

124

125

TF = 8

BF = 8

TF = 8

− 1 = 114

BF = 8

RAM (132 x 132)

display (132 x 130)

MGU926

SEP[7:0]

SEP−2

SEP

127

130

131

128

129

124

122

121

125

126

1 buffer row

1 unused row

Fig.17 The non-rolling Scroll mode (TF + SA + BF = 131) for LAO = 0.

6.2.24.3

Non-rolling Scroll mode

The RAM-to-display mapping for the non-rolling Scroll

mode when a 132

× 130 (columns × rows) display is

connected to the PCF8833 is illustrated in Fig.18. In this

case unused rows and columns are to be left open, for

instance row 0 and 131. If a 132

× 132 display is

connected to the PCF8833 the content of row 0 and 131

will be the same as the content which is displayed in row

1 and 130, respectively. By doing so the display data RAM

will have 2 rows in the background, whose content can be

updated when they are not displayed.

The non-rolling Scroll mode is activated when the Set

Entry Scroll Point is set; see Table Fig.37.

Figure 19 shows an example for when the PCF8833 is

working in the non-rolling Scroll mode

(TF + SA + BF = 132).

When the non-rolling Scroll mode is used the following

sequence can be applied.

• Fill the background memory

• After the desired time interval increment the scroll

address to SEP + n for a n-line step

• Keep filling the background memory and incrementing

scroll address (SEP) at regular intervals to obtain a

smooth scrolling.

The non-rolling Scroll mode is left when the normal Display

mode on (NORON) or the partial Display mode on

(PTLON) is selected.

PCF8833U/2DA 数据表(PDF) 38 Page - NXP Semiconductors

PCF8833U/2DA 数据表(HTML) 38 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载