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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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PCF8545ATT Scheda tecnica(PDF) 30 Page - NXP Semiconductors |
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PCF8545ATT Scheda tecnica(HTML) 30 Page - NXP Semiconductors |
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30 / 51 page  NXP Semiconductors PCF8551 Universal 36 × 4 LCD segment driver • CE set HIGH aaa-011954 display data display data AP[4:0] R/W default SCL SDIO CE b7 1 b6 0 b5 0 b4 0 b3 0 b2 1 b1 0 b0 0 b7 1 b6 1 b5 1 b4 0 b3 0 b2 0 b1 0 b0 0 b7 0 b6 0 b5 1 b4 1 b3 0 b2 0 b1 0 b0 0 Data transfers are terminated by de-asserting CE (set CE to logic 1). Figure 21. SPI-bus read example: reading two data bytes from registers 04h and 05h 10.3 EMC detection The PCF8551 is ruggedized against EMC susceptibility; however it is not possible to cover all cases. To detect if a severe EMC event has occurred, it is possible to check the responsiveness of the device by reading its registers. 11 Internal circuitry VSS SCL, SDA/CE VDD PORE, SDIO, CLK VSS VSS VLCD COM0 to COM3 SEG0 to SEG35 aaa-013225 Figure 22. Device protection diagram 12 Safety notes CAUTION This device is sensitive to ElectroStatic Discharge (ESD). Observe precautions for handling electrostatic sensitive devices. Such precautions are described in the ANSI/ESD S20.20, IEC/ST 61340-5, JESD625-A or equivalent standards. PCF8551 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved. Product data sheet Rev. 3.1 — 3 May 2021 30 / 51 |
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