PCF8811USLASH2DASLASH1 datasheet(36/73 Pages) PHILIPS

36 / 73 page

2004 May 17

Philips Semiconductors

Product speciﬁcation

× 128 pixels matrix LCD driver

PCF8811

13.9

Bias levels

The bias levels for an MRA driving method with p = 8 are given in Fig.31 when Gmax and F have the same value. The

value p defines the number of rows which are simultaneously selected.

The row voltage F depends on the mux rate selected (number of rows N), the threshold voltage of the liquid (VTH), the

number of simultaneously selected rows (p) and the multiplexibility (m):

(1)

The column voltages are situated around the common level VC. The column voltage levels are equidistant from each

other. In Table 19 the column voltage levels are given as a function of F.

handbook, full pagewidth

MGW752

0.25Gmax

0.50Gmax

0.75Gmax

Gmax = F = VLCD

VLCD

V3_H

V2_H

V1_H

V1_L

V2_L

V3_L

VSS

−Gmax = F = VSS

−0.25Gmax

−0.50Gmax

−0.75Gmax

Fig.31 Bias levels for a MRA system with p = 8 and Gmax =F.

-------

----

–

--------------------------------

PCF8811U/2DA/1 数据表(PDF) 36 Page - NXP Semiconductors

PCF8811U/2DA/1 数据表(HTML) 36 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

数据表下载