PCF8545 datasheet(20/72 Pages) NXP

20 / 72 page

PCF8545

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Product data sheet

Rev. 1 — 13 November 2013

20 of 72

NXP Semiconductors

PCF8545

Universal LCD driver for multiplex rates up to 1:8

8.3 Possible display configurations

The PCF8545 is a versatile peripheral device designed to interface between any

microcontroller to a wide variety of LCD segment or dot matrix displays (see Figure 10). It

can drive multiplexed LCD with 4, 6, or 8 backplanes and up to 44 segments.

The display configurations possible with the PCF8545 depend on the required number of

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

Table 22.

[1]

7 segment display has 8 elements including the decimal point.

[2]

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

All of the display configurations in Table 22 can be implemented in the typical systems

shown in Figure 11 and Figure 12.

Fig 10. Example of displays suitable for PCF8545

Table 22.

Selection of display configurations

Number of

Digits/Characters

Dot matrix/

Elements

Backplanes

Segments

Icons

7 segment[1]

14 segment[2]

320

252

176

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