NXP Semiconductors
PCA8538
Automotive 102 x 9 Chip-On-Glass LCD segment driver
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E E E E E E E E E E E E E E E E E E E E E E E E
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In this example, the bias system is set to 1⁄3. The transfer is terminated by CE returning to logic 1. After the last bit is
transmitted, the state of the SDI/SDAIN line is not important.
Fig 45. SPI-bus example
For a temperature readout (see Section 8.10.4.1 on page 38), the R/W bit must be logic 1.
The next data byte following is provided by the PCA8538 as shown in Figure 46.
5:
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Fig 46. SPI-bus protocol - read example
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5:
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6
5
6
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Data transfers are terminated by de-asserting CE (set CE to logic 1).
Fig 47. SPI-bus protocol - write example
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DDD
PCA8538
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 26 September 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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