PCA8530DUGSLASHDA datasheet(80/103 Pages) NXP

80 / 103 page

PCA8530

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Product data sheet

Rev. 2 — 25 September 2014

80 of 103

NXP Semiconductors

PCA8530

Automotive 102 x 4 Chip-On-Glass LCD segment driver

15.2 Cascaded operation

In large display configurations, up to four PCA8530 can be distinguished on the same bus

by using the 2-bit hardware device addresses (A0 and A1).

15.2.1 Wiring backplane and segment outputs

When the cascaded PCA8530 are synchronized, they can share the backplane signals

from one of the devices in the cascade. Such an arrangement is cost-effective in large

LCD applications since the backplane outputs of only one device need to be

through-plated to the backplane electrodes of the display. The other PCA8530 of the

cascade contribute additional segment outputs. The backplanes can either be connected

together to enhance the drive capability or some can be left open-circuit (such as the ones

from the slave in Figure 56 and Figure 57) or just some of the master and some of the

slave will be taken to facilitate the layout of the display.

Table 52.

Addressing cascaded PCA8530

Pin A1

Pin A0

Device

0 (master)

1 (slave)

2 (slave)

3 (slave)

PCA8530DUG/DA Datasheet(PDF) 80 Page - NXP Semiconductors