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PCF8536AT 数据表(PDF) 50 Page - NXP Semiconductors |
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PCF8536AT 数据表(HTML) 50 Page - NXP Semiconductors |
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50 / 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 50 of 103 NXP Semiconductors PCA8530 Automotive 102 x 4 Chip-On-Glass LCD segment driver 8.11 Backplane outputs The LCD drive section includes 4 backplane outputs: COM0 to COM3. The backplanes are double implemented to offer a higher flexibility for the glass layout. The backplane output signals are generated based on the selected LCD multiplex drive mode. Table 36 describes which outputs are active for each of the multiplex drive modes and what signal is generated. Table 37 describes the corresponding layout topology. 8.11.1 Driving strength on the backplanes Corresponding output pins (COMx), which are carrying the same signal (BPx), may optionally be connected to the display. This allows gaining a higher driving strength. If not required, the unused pins can be left open-circuit. 8.12 Segment outputs The LCD drive section includes 102 segment outputs (S0 to S101) which must be connected directly to the LCD. The segment output signals are generated based on the multiplexed backplane signals and with data resident in the display register. When less than 102 segment outputs are required, the unused segment outputs must be left open-circuit. 8.13 Display register The display register holds the display data while the corresponding multiplex signals are generated. Table 36. Mapping of output pins and corresponding output signals with respect to the multiplex driving mode Multiplex drive mode Output pin COM0 COM1 COM2 COM3 Signal static BP0 BP0 BP0 BP0 1:2 BP0 BP1 BP0 BP1 1:4 BP0 BP1 BP2 BP3 Table 37. Layout topology of output pins and corresponding output signals with respect to the multiplex driving mode Multiplex drive mode Static 1:2 1:4 Signal On pin Signal On pin Signal On pin BP0 COM0 BP0 COM0 BP0 COM0 COM1 COM2 BP1 COM1 COM2 BP1 COM1 BP2 COM2 COM3 COM3 BP3 COM3 |
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