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PCF8536AT 数据表(PDF) 80 Page - NXP Semiconductors |
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PCF8536AT 数据表(HTML) 80 Page - NXP Semiconductors |
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80 / 103 page  PCA8530 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved. 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 0 0 (master) 01 1 (slave) 10 2 (slave) 11 3 (slave) |
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