PCF85176 40 x 4 universal LCD driver for low multiplex rates Rev. 5.1 15 September 2021 Product data sheet 1 General description The PCF85176 is a peripheral device which interfaces to almost any Liquid Crystal 1 Display (LCD) with low multiplex rates. It generates the drive signals for any static or multiplexed LCD containing up to four backplanes and up to 40 segments. It can be easily cascaded for larger LCD applications. The PCF85176 is compatible with most 2 microcontrollers and communicates via the two-line bidirectional I C-bus. Communication overheads are minimized by a display RAM with auto-incremented addressing, by hardware subaddressing, and by display memory switching (static and duplex drive modes). For a selection of NXP LCD segment drivers, see Table 23. 2 Features and benefits Single chip LCD controller and driver Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing 1 1 Selectable display bias configuration: static, , or 2 3 Internal LCD bias generation with voltage-follower buffers 40 segment drives: Up to 20 7-segment numeric characters Up to 10 14-segment alphanumeric characters Any graphics of up to 160 segments/elements 40 4-bit RAM for display data storage Auto-incremented display data loading across device subaddress boundaries Display memory bank switching in static and duplex drive modes Versatile blinking modes Independent supplies possible for LCD and logic voltages Wide power supply range: from 1.8 V to 5.5 V Wide logic LCD supply range: From 2.5 V for low-threshold LCDs Up to 6.5 V for guest-host LCDs and high-threshold twisted nematic LCDs Low power consumption 2 400 kHz I C-bus interface May be cascaded for large LCD applications (up to 2560 segments/elements possible) No external components required Manufactured in silicon gate CMOS process 1 The definition of the abbreviations and acronyms used in this data sheet can be found in Section 20.NXP Semiconductors PCF85176 40 x 4 universal LCD driver for low multiplex rates 3 Ordering information Table 1.Ordering information Type number Topside Package mark Name Description Version PCF85176H PCF85176H TQFP64 plastic thin quad flat package, 64 leads body 10 x 10 x SOT357-1 1.0 mm PCF85178T PCF85176T plastic thin shrink small outline package, 56 leads SOT364-1 TSSOP56 body width 6.1 mm 3.1 Ordering options Table 2.Ordering options 1 Type number Orderable part Package Packing method Minimum Temperature number order quantity PCF85176H/1 PCF85176H/1,518 TQFP64 reel, 13 inch, dry pack 1500 T = -40 C to +85 C amb 2 PCF85176T/1 PCF85176T/1,118 TSSOP56 reel 13 inch q1 non dry 2000 T = -40 C to +85 C amb pack PCF85176T/1Y TSSOP56 reel 13 inch q1 dry pack 2000 T = -40 C to +85 C amb 1 Standard packing quantities and other packaging data are available at www.nxp.com/ packages/ 2 Discontinuation notice 202107021DN - drop-in replacement is PCF85176T/1Y - this is documented in PCN202102010F01. PCF85176 All information provided in this document is subject to legal disclaimers. NXP B.V. 2021. All rights reserved. Product data sheet Rev. 5.1 15 September 2021 2 / 54