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PCF8534AU/DA/1 데이터시트(PDF) 33 Page - NXP Semiconductors

부품명 PCF8534AU/DA/1
상세설명  Universal LCD driver for low multiplex rates
PDF  47 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8534AU/DA/1 데이터시트(HTML) 33 Page - NXP Semiconductors

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PCF8534A_5
© NXP B.V. 2009. All rights reserved.
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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