PCA9620 datasheet(13/71 Pages) NXP

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PCA9620

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Product data sheet

Rev. 1 — 9 December 2010

13 of 71

NXP Semiconductors

PCA9620

Universal LCD driver for low multiplex rates

All of the display configurations in Table 24 can be implemented in the typical systems

shown in Figure 4 (internal VLCD) and in Figure 5 (external VLCD).

Fig 3.

Example of displays suitable for PCA9620

Table 24.

Selection of possible display configurations

Number of

Backplanes

Icons

Digits/Characters

Dot matrix/

Elements

7-segment

14-segment

480

480 dots (8

× 60)

320

360 dots (6

× 60)

240

240 dots (4

× 60)

120

120 dots (2

× 60)

160

360 dots (1

× 60)

VDD1 from 2.5 V to 5.5 V and VDD2 from 2.5 V to 5.5 V.

Fig 4.

Typical system configuration when using the internal VLCD generation

7-segment with dot

14-segment with dot and accent

013aaa312

dot matrix

HOST

PROCESSOR/

MICRO-

CONTROLLER

≤

2Cb

SDA

SCL

60 segment drives

8 backplanes

LCD PANEL

(up to 480

elements)

PCA9620

VDD1

VSS

013aaa247

VDD2

VLCD

VDD2

VDD1

CLK

n.c.

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