PCF8551BTT/AY

Display Drivers Overview

The PCF8551BTT/AY is a universal 36x4 LCD segment driver manufactured by NXP USA Inc. It operates within a supply voltage range of 1.8V to 5.5V and features an SPI bus interface with a maximum clock frequency of 3MHz. The device supports configurations for 9 or 18 seven-segment characters, 14 alphanumeric characters, and up to 144 segments. It consumes 1.2 µA of supply current and functions reliably across a temperature range of -40°C to +85°C. The component is housed in a 48-TSSOP package.

Display Drivers Feature Summary

• Supports multiple display configurations including 7-segment digits, alphanumeric characters, and graphic segments.
• Features internal LCD bias voltage generation with selectable static, 1/2, or 1/3 bias options.
• Includes built-in buffer for automatic incrementing of display data and instructions.
• Offers flexible clock signal options utilizing either internal generation or external supply.

Display Drivers Applications

• Consumer electronics requiring low-power LCD interfaces
• Industrial control panels with alphanumeric displays
• Automotive instrument clusters and status indicators
• Medical devices with segmented screen requirements

Display Drivers Procurement Notes

Verify the specific suffix 'AY' against official NXP documentation to confirm exact ordering and packaging details. Ensure compatibility with existing system designs as this part may be subject to lifecycle changes. Cross-reference the datasheet version to validate all electrical characteristics before integration into production systems.

Display Drivers Selection Notes

Select this component when an SPI interface is preferred over I2C for higher speed communication. It is suitable for applications requiring complex character sets or mixed alphanumeric/graphic displays. Consider the power consumption and voltage range to ensure alignment with system battery or rail specifications.

Display Drivers Part Context

This model belongs to the PCF8551 family of universal LCD segment drivers from NXP Semiconductors. The series provides versatile solutions for driving various LCD types, offering flexibility in configuration and interface options to meet diverse design requirements across multiple industries.

Display Drivers Replacement Considerations

PCF8551ATT/AJ is a confirmed direct substitute within the same product family. Verify pinout and functional equivalence before swapping components to ensure seamless integration without hardware modifications.

Display Drivers FAQ

What is the maximum SPI clock frequency supported?

The PCF8551BTT/AY supports a maximum SPI bus clock frequency of 3MHz.

Can this driver support both numeric and alphanumeric displays simultaneously?

Yes, it can drive up to 18 seven-segment digits or 9 fourteen-segment alphanumeric characters.