PCF8534A datasheet(7/52 Pages) NXP

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PCF8534A

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Product data sheet

Rev. 6 — 25 July 2011

7 of 52

NXP Semiconductors

PCF8534A

Universal LCD driver for low multiplex rates

Functional description

The PCF8534A is a versatile peripheral device designed to interface between any

microcontroller to a wide variety of LCD segment or dot matrix displays (see Figure 4). It

can directly drive any static or multiplexed LCD containing up to four backplanes and up to

60 segments.

The display configurations possible with the PCF8534A depend on the required number of

active backplane outputs. A selection of display configurations is given in Table 4.

All of the display configurations given in Table 4 can be implemented in a typical system

as shown in Figure 5.

[1]

7-segment display has eight elements including the decimal point.

[2]

14-segment display has 16 elements including decimal point and accent dot.

Fig 4.

Example of displays suitable for PCF8534A

Table 4.

Selection of possible display configurations

Number of

Backplanes

Icons

Digits/Characters

Dot matrix/

Elements

7-segment[1]

14-segment[2]

240

240 (4

 60)

180

180 (3

 60)

120

120 (2

 60)

160

7360 (1

 60)

7-segment with dot

14-segment with dot and accent

013aaa312

dot matrix

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