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PCF8545ATT Datasheet(PDF) 7 Page - NXP Semiconductors |
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PCF8545ATT Datasheet(HTML) 7 Page - NXP Semiconductors |
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7 / 51 page  NXP Semiconductors PCF8551 Universal 36 × 4 LCD segment driver Bits labeled as 0 must always be written with logic 0; bits labeled as - are ignored by the device. Address Bits Register name AP[4:0] 7 6 5 4 3 2 1 0 Reference 09h SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 0Ah SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 0Bh SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 0Ch SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 COM1 0Dh - - - - SEG35 SEG34 SEG33 SEG32 0Eh SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 0Fh SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 10h SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 11h SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 COM2 12h - - - - SEG35 SEG34 SEG33 SEG32 13h SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 14h SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 15h SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 16h SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 COM3 17h - - - - SEG35 SEG34 SEG33 SEG32 Table 4. Registers of the PCF8551...continued For writing to the registers, send the address byte first, then write the data to the register (see Section 10.1.4 and Section 10.2.1). The address byte works as an address pointer. For the succeeding registers, the address pointer is automatically incremented by 1 (see Figure 5) and all following data are written into these register addresses. After register 18h, the auto-incrementing will stop and subsequent data are ignored. aaa-011661 address counter 00h auto-increment 01h 02h 03h ... 15h 16h 17h Figure 5. Address counter incrementing 7.2 Command registers of the PCF8551 7.2.1 Command: Device_ctrl The Device_ctrl command sets the device into a defined state. It should be executed before enabling the display (see bit DE in Table 6). 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 7 / 51 |
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