PCA8546BTT/AJ

Display Drivers Overview

The PCA8546BTT/AJ is an automotive-grade LCD segment driver manufactured by NXP Semiconductors. It functions as a single-chip controller and driver for up to 176 display elements, supporting configurations of four backplanes. The device communicates via a three-wire unidirectional SPI bus interface, operating at a maximum clock frequency of 5 MHz. It accepts a digital power supply ranging from 1.8 V to 5.5 V and supports LCD power voltages between 2.5 V and 9 V. The component features on-chip RAM for display data storage and allows for separate logic and LCD power supplies. It is designed for wide operating temperatures from -40 °C to +95 °C.

Display Drivers Feature Summary

• Complies with AEC-Q100 Grade 3 standards for automotive electronic applications
• Integrates a single chip capable of controlling 176 LCD segments with on-chip display RAM
• Supports flexible display configurations including multiple backplane and bias options
• Enables separation of LCD and logic power supplies for optimized system design

Display Drivers Applications

• Automotive air conditioning system displays
• Car radio user interfaces
• Vehicle instrument cluster dashboards

Display Drivers Procurement Notes

This component is listed as obsolete or end-of-life by the manufacturer. Availability is restricted, and Mouser indicates non-sale in certain regions. Verify current stock status and lifecycle status directly with authorized distributors before design finalization. Consider migration strategies due to discontinuation. Ensure compliance with RoHS directives and confirm package orientation requirements for surface mount assembly.

Display Drivers Selection Notes

Select this part for automotive LCD applications requiring SPI communication and high segment counts. It is suitable for designs needing AEC-Q100 Grade 3 qualification. Compare against PCF8553DTT/A and PCA85276ATT/A for newer alternatives. Evaluate power supply separation needs and temperature range requirements. Confirm compatibility with existing microcontroller SPI interfaces and memory constraints for the 176-segment capacity.

Display Drivers Part Context

The PCA8546 series belongs to NXP's family of automotive-grade LCD segment drivers. These devices are designed to interface with microcontrollers via I²C or SPI buses. The PCA8546 specifically utilizes SPI for its B-tape variant. It is part of a lineage that includes compatible parts like the PCA8546A (I²C) and related models such as the PCA8536. The series targets robust performance in harsh automotive environments with low power consumption and high reliability standards.

Display Drivers Replacement Considerations

NXP recommends using PCF8553DTT/A and PCA85276ATT/A for new designs. Existing inventory of PCA8546ATT and PCA8546BTT will be supported until depletion. Verify form, fit, and function compatibility when migrating to these suggested replacements.