PCA8546 4 x 44 automotive LCD driver Rev. 1 13 November 2013 Product data sheet 1. General description The PCA8546 is a peripheral device which generates the drive signals for any multiplexed LCD containing up to four backplanes, and up to 176 elements. The PCA8546 is compatible with most microcontrollers and communicates via the two-line bidirectional 2 I C-bus (PCA8546A) or a three line unidirectional SPI-bus (PCA8546B). Communication overheads are minimized using a display RAM with auto-incremented addressing. For a selection of NXP LCD segment drivers, see Table 38 on page 53. 2. Features and benefits AEC-Q100 grade 3 compliant for automotive applications Single-chip 176 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 9 V LCD and logic supplies may be separated Low power consumption Four backplanes and selectable display bias configuration On-chip RAM for display data storage 2 400 kHz I C-bus interface (PCA8546A) 5 MHz SPI-bus interface (PCA8546B) Programmable frame frequency in the range of 60 Hz to 300 Hz in steps of about 10 Hz factory calibrated 176 segments driven allowing: up to 22 7-segment alphanumeric characters up to 11 14-segment alphanumeric characters any graphics of up to 176 elements Manufactured in silicon gate CMOS process Extended operating temperature range up to 95 C 3. Applications Climate control Car radio Dashboard displayPCA8546 NXP Semiconductors 4 x 44 automotive LCD driver 4. Ordering information Table 1. Ordering information Type number Interface Package type Name Description Version 2 PCA8546ATT I C-bus TSSOP56 plastic thin shrink small outline SOT364-1 package 56 leads body width 6.1 mm PCA8546BTT SPI-bus TSSOP56 plastic thin shrink small outline SOT364-1 package 56 leads body width 6.1 mm 4.1 Ordering options Table 2. Ordering options Product type number Sales item (12NC) Orderable part IC Delivery form number revision PCA8546ATT/A 935302989118 PCA8546ATT/AJ 1 tape and reel, 13 inch PCA8546BTT/A 935302991118 PCA8546BTT/AJ 1 tape and reel, 13 inch 5. Marking Table 3. Marking codes Type number Marking code PCA8546ATT/A PCA8546ATT PCA8546BTT/A PCA8546BTT PCA8546 All information provided in this document is subject to legal disclaimers. NXP B.V. 2013. All rights reserved. Product data sheet Rev. 1 13 November 2013 2 of 63