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PCF8545ATT/A датащи(PDF) 32 Page - NXP Semiconductors |
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PCF8545ATT/A датащи(HTML) 32 Page - NXP Semiconductors |
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32 / 72 page ![]() PCF8545 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved. Product data sheet Rev. 1 — 13 November 2013 32 of 72 NXP Semiconductors PCF8545 Universal LCD driver for multiplex rates up to 1:8 Depending on the start address of the data pointer, there is the possibility for a boundary condition. This occurs when more data bits are sent than fit into the remaining RAM. The additional data bits are discarded. See Figure 21. 8.9.3 RAM filling in 1:6 multiplex drive mode In the 1:6 multiplex drive mode the RAM is organized in six rows and 42 columns. The eight transmitted data bits are placed in such a way, that a column is filled up (see Figure 22). Fig 20. Display RAM filling order in 1:4 multiplex drive mode Fig 21. Boundary condition in 1:4 multiplex drive mode |
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