PCF8545 Universal LCD driver for multiplex rates up to 1:8 Rev. 2 4 October 2021 Product data sheet 1 General description The PCF8545 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 multiplexed LCD containing up to eight backplanes, and up to 320 elements. The PCF8545 is compatible with most microcontrollers and communicates via the two-line bidirectional 2 I C-bus (PCF8545A) or a three line unidirectional SPI-bus (PCF8545B). Communication overheads are minimized using a display RAM with auto-incremented addressing. For a selection of NXP LCD segment drivers, see Table 39. 2 Features and benefits Single-chip 320 elements LCD controller and driver Wide range for digital power supply: from 1.8 V to 5.5 V LCD supply range from 2.5 V up to 5.5 V LCD and logic supplies may be separated Low power consumption Selectable backplane drive configuration: 4, 6, or 8 backplane multiplexing Selectable display bias configuration 320-bit RAM for display data storage 2 400 kHz I C-bus interface (PCF8545A) 5 MHz SPI-bus interface (PCF8545B) Programmable frame frequency in the range of 60 Hz to 300 Hz in steps of 10 Hz factory calibrated 320 segments driven allowing: up to 40 7-segment alphanumeric characters up to 20 14-segment alphanumeric characters any graphics of up to 320 elements Manufactured in silicon gate CMOS process 3 Applications Industrial and consumer products 1 The definition of the abbreviations and acronyms used in this data sheet can be found in Section 20.NXP Semiconductors PCF8545 Universal LCD driver for multiplex rates up to 1:8 4 Ordering information Table 1.Ordering information Type number Interface Topside Package type mark Name Description Version 2 PCF8545ATT I C-bus PCF8545ATT TSSOP56 plastic thin shrink small outline package 56 SOT364-1 leads body width 6.1 mm PCF8545BTT SPI-bus PCF8545BTT TSSOP56 plastic thin shrink small outline package 56 SOT364-1 leads body width 6.1 mm 4.1 Ordering options Table 2.Ordering options 1 Type number Orderable part number Package Packing method Minimum Temperature order quantity 2 PCF8545ATT/A PCF8545ATT/AJ reel 13 inch q1 non 2000 T = -40 C to +85 C TSSOP56 amb dry pack PCF8545ATT/AY TSSOP56 reel 13 inch q1 dry 2000 T = -40 C to +85 C amb pack 3 PCF8545BTT/A PCF8545BTT/AJ reel 13 inch q1 non 2000 T = -40 C to +85 C TSSOP56 amb dry pack PCF8545BTT/AY TSSOP56 reel 13 inch q1 dry 2000 T = -40 C to +85 C amb pack 1 Standard packing quantities and other packaging data are available at www.nxp.com/packages/. 2 Discontinuation Notice 202107021DN - drop in replacement is PCF8545ATT/AY - this is documented in PCN202102010F01. 3 Discontinuation Notice 202107021DN - drop in replacement is PCF8545BTT/AY - this is documented in PCN202102010F01. PCF8545 All information provided in this document is subject to legal disclaimers. NXP B.V. 2021. All rights reserved. Product data sheet Rev. 2 4 October 2021 2 / 68