PCF8545ATT/AY

Display Drivers Overview

The PCF8545ATT/AY is a Real-Time Clock (RTC) and LCD segment driver integrated circuit manufactured by NXP Semiconductors. It combines timekeeping functions with an SPI-based LCD driver capable of multiplex rates up to 1:8, housed in a TSSOP56 package. The device supports I2C communication for RTC data access and features low power consumption suitable for battery-backed applications. It includes alarm capabilities and calendar functions.

Display Drivers Feature Summary

• Integrates real-time clock functionality with an SPI LCD segment driver for multiplex rates up to 1:8
• Supports I2C interface for RTC data access and configuration
• Features low power consumption design suitable for battery-operated systems

Display Drivers Applications

• Battery-powered consumer electronics requiring time display
• Industrial control panels with segmented LCD interfaces
• Smart home devices needing combined timekeeping and display driving

Display Drivers Procurement Notes

Verify component authenticity through authorized NXP distributors or certified partners. Confirm the specific suffix matches project requirements. Check current availability status as this part may have limited supply or end-of-life implications. Ensure ESD handling procedures are followed during storage and assembly.

Display Drivers Selection Notes

Select this component when a single IC must handle both RTC operations and LCD segment driving via SPI. Consider the TSSOP56 package constraints and multiplexing requirements. Evaluate power budget against the integrated driver load. Verify I2C bus compatibility with the host microcontroller for time synchronization tasks.

Display Drivers Part Context

This part belongs to NXP's PCF85xx series of real-time clocks and peripheral drivers. It is designed for applications requiring compact solutions that combine timekeeping with display output. The integration reduces board space compared to separate RTC and LCD driver chips.

Display Drivers Replacement Considerations

Direct substitutes include other NXP RTC-LCD combo parts with similar SPI interfaces and multiplex support. Verify pinout compatibility and electrical specifications before substitution.