PCF8534AHLSLASH1 datasheet(33/47 Pages) NXP

tên linh kiện	PCF8534AHL/1

Giải thích chi tiết về linh kiện	Universal LCD driver for low multiplex rates

PDF	47 Pages

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nhà sản xuất	NXP [NXP Semiconductors]

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PCF8534A_5

Product data sheet

Rev. 05 — 6 August 2009

33 of 47

NXP Semiconductors

PCF8534A

Universal LCD driver for low multiplex rates

13. Application information

13.1 Cascaded operation

Large display conﬁgurations of up to 16 PCF8534As can be recognized on the same

I2C-bus by using the 3-bit hardware subaddress (A0, A1 and A2) and the programmable

I2C-bus slave address (SA0).

If cascaded PCF8534As are synchronized, they can share the backplane signals from

one of the devices in the cascade. This is cost-effective in large LCD applications because

the backplane outputs of only one device need to be through-plated to the backplane

electrodes of the display. The other PCF8534As in the cascade contribute additional

segment outputs but their backplane outputs are left open-circuit (see Figure 22).

Table 18.

Addressing cascaded PCF8534A

Cluster

Bit SA0

Pin A2

Pin A1

Pin A0

Device

100000

0011

0102

0113

1004

1015

1106

1117

210008

0019

01010

01111

10012

10113

11014

11115

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